Ship with liquid cargo tank detection channel

Abstract

The utility model relates to the technical field of ships, in particular to a ship with a liquid cargo tank detection channel. Wherein the detection channel is defined by a horizontal girder, a fence and the bulkhead of the liquid cargo tank, a first passing hole communicated with the detection channel is formed in a transverse strong frame of the liquid cargo tank, or an avoiding platform which is arranged on the outer side of the transverse strong frame in a striding mode and is provided with a communication channel is arranged on the longitudinal bulkhead of the liquid cargo tank, and the communication channel is communicated with the detection channels on the two sides of the transverse strong frame. The inherent horizontal girder of the ship liquid cargo tank and the liquid cargo tank wall are used as the main body of the detection channel, so that the manufacturing material is saved, and the cost is reduced; a first passing hole communicated with the detection channel is formed in a transverse strong frame of the liquid cargo tank, or an avoiding platform arranged on the outer side of the transverse strong frame in a crossing mode is arranged on the longitudinal bulkhead of the liquid cargo tank and used for being connected with the detection channel, so that the detection channel does not need to integrally cross the strong frame from the outside, parts are reduced, and cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of ships, in particular to a ship with a cargo tank inspection passageway. Background Art

[0002] To meet the requirements of the IGC Code, for gas carriers with independent cargo tanks, an internal inspection passageway of the cargo tank needs to be provided for the routine inspection of the cargo tank. The inspection passageway needs to meet the requirement of being able to view all places inside the cargo tank.

[0003] To enable the inspection passageway to view all places inside the cargo tank, the inspection passageway is continuously arranged along the transverse bulkheads and longitudinal bulkheads of the cargo tank. Among them, the horizontal girders at the transverse bulkheads form the bottom of the inspection passageway. For the inspection passageway arranged at the longitudinal bulkheads, since the inspection passageway needs to avoid the strong frames inside the tank, the inspection passageway needs to be completely arranged outside the strong frames. Therefore, an inspection platform needs to be erected outside the strong frames to form the inspection passageway. The inspection platform extends longitudinally and spans all transverse strong frames. This kind of inspection platform is a cantilever truss structure. At the position corresponding to the strong frame, the inspection platform is supported on the strong frame panel, while at other positions, the inspection platform is supported on the side longitudinal stiffeners of the longitudinal bulkhead.

[0004] Since the prior art needs to erect a longitudinally extending inspection platform outside the strong frames to form the inspection passageway, it requires a large number of parts, complex construction and relatively high costs; moreover, the layout position and form of the inspection passageway are completely restricted by the internal structure of the tank and need to be installed after the cargo tank is built, resulting in a long construction period and low efficiency. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a ship with a cargo tank inspection passageway, so as to solve the technical problems of a large number of parts, low construction efficiency and high costs existing in the prior art, and achieve the technical effects of reducing the number of parts, improving the construction efficiency and reducing the manufacturing cost.

[0006] With the above concept, the technical solution adopted by the utility model is as follows:

[0007] A ship with a cargo tank inspection passageway has a cargo tank. At a preset height, a fence is connected to the outside of the horizontal girder of the cargo tank bulkhead, and the horizontal girder, the fence and the bulkhead of the cargo tank enclose to form an inspection passageway;

[0008] A first passage hole communicating with the inspection passageway is opened at the transverse strong frame of the cargo tank; or, an avoidance platform straddling outside the transverse strong frame is arranged on the longitudinal bulkhead of the cargo tank. The avoidance platform is arranged corresponding to each transverse strong frame and has a communication passageway, and the communication passageway communicates with the inspection passageways on both sides of the transverse strong frame.

[0009] Optionally, the width of the horizontal girder connected to the fence is greater than or equal to 70 cm.

[0010] Optionally, at least two of the liquid cargo holds are arranged side by side along the length direction of the ship, and adjacent two of the liquid cargo holds are separated by a shared bulkhead. A second access hole is formed in the shared bulkhead, and the second access hole communicates with the inspection channels of the adjacent two liquid cargo holds.

[0011] Optionally, the first access hole and the second access hole are elliptical holes or oblong holes extending vertically.

[0012] Optionally, the avoidance platform has a U-shaped structure, and two ends of the U-shaped structure are respectively located on opposite sides of the transverse strong frame and are connected to the horizontal girder.

[0013] Optionally, the avoidance platform includes a bottom plate that is horizontally arranged and U-shaped. A guardrail is arranged on a side of the bottom plate away from the transverse strong frame. The guardrail, the bottom plate, and the transverse strong frame enclose to form the communication channel.

[0014] Optionally, the avoidance platform further includes a diagonal brace. The diagonal brace extends upward and away from the longitudinal bulkhead. The upper end of the diagonal brace is connected to the bottom of the bottom plate, and the lower end of the diagonal brace is connected to the longitudinal bulkhead.

[0015] Optionally, the width of the communication channel is greater than or equal to 50 cm.

[0016] Optionally, at least two inspection channels are arranged at intervals along the height direction of the ship. Among two adjacent inspection channels in the height direction, a third access hole is formed in the horizontal girder corresponding to the upper inspection channel, and a climbing member is arranged between the third access hole and the adjacent lower inspection channel.

[0017] Optionally, in the height direction of the ship, adjacent two of the third access holes are arranged in one-to-one correspondence.

[0018] Advantageous effects:

[0019] A ship with a liquid cargo tank inspection passage proposed by the present utility model uses the inherent horizontal girders and liquid cargo tank bulkheads of the ship's liquid cargo tank as the main body of the inspection passage. Only by connecting a fence outside the horizontal girders can the inspection passage be formed, effectively utilizing the inherent materials of the hull itself, thus saving production materials and reducing costs. It also opens a first passage hole connecting the inspection passage at the transverse strong frame of the liquid cargo tank, or sets an avoidance platform straddling the outside of the transverse strong frame on the longitudinal bulkhead of the liquid cargo tank to connect the inspection passage, enabling the inspection passage to effectively span the strong frame. Compared with the method of setting the entire inspection passage outside the transverse strong frame to avoid the transverse strong frame, it reduces parts and costs. Moreover, using the inherent horizontal girders of the liquid cargo tank as the main body of the inspection passage can synchronously complete the inspection passage during the construction of the liquid cargo tank, thereby improving construction efficiency. Brief Description of the Drawings

[0020] Figure 1 is a top view of the liquid cargo tank of a ship with a liquid cargo tank inspection passage provided by an embodiment of the present utility model along the length direction of the hull;

[0021] Figure 2 is Figure 1 a sectional view along the A-A direction;

[0022] Figure 3 is Figure 1 a sectional view along the B-B direction;

[0023] Figure 4 is a top view of the avoidance platform of a ship with a liquid cargo tank inspection passage provided by Embodiment 2 of the present utility model;

[0024] Figure 5 is Figure 4 a partial enlarged view at C in;

[0025] In the figure:

[0026] 1, horizontal girder; 11, third passage hole

[0027] 2, transverse strong frame; 21, first passage hole;

[0028] 3, fence;

[0029] 4, avoidance platform;

[0030] 10, inspection passage. Detailed Embodiment

[0031] To make the technical problems solved, the technical solutions adopted, and the technical effects achieved by the present utility model clearer, the technical solutions of the present utility model will be further described below with reference to the accompanying drawings and through specific embodiments. It can be understood that the specific embodiments described herein are only for explaining the present utility model and not for limiting the present utility model. In addition, it should be noted that for the sake of description, only the parts related to the present utility model are shown in the drawings rather than all of them.

[0032] In the description of the present utility model, unless otherwise clearly defined and limited, the terms "connected", "connected to", and "fixed" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0033] In the present utility model, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features therebetween. Moreover, the first feature being "above", "above and over", and "on the top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely means that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "below and under", and "beneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely means that the horizontal height of the first feature is lower than that of the second feature.

[0034] In the description of this embodiment, the orientation or positional relationships such as "above", "below", "right", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meanings.

[0035] Ships used to carry liquid cargoes generally have multiple cargo tanks, which are loaded with petroleum, vegetable oil, liquefied natural gas and other cargoes. Due to the variety of liquid cargoes loaded in the cargo tanks, some types of liquids may have characteristics such as high pressure and high corrosiveness, so cracks are prone to appear on the bulkheads of the cargo tanks after long-term use. Cracks are an important signal that the structural strength of the cargo tanks is damaged. They need to be discovered and handled in time to prevent the cargo tanks from breaking after long-term cracks, thereby preventing major accidents. In the prior art, a cargo tank inspection channel is generally set up inside the cargo tank for inspection personnel to pass through. The inspection personnel generally inspect the inner wall of the cargo tank visually to ensure that cracks are found in time. However, in the prior art, a longitudinally extending inspection platform needs to be set up on the outside of the strong frame to form an inspection channel. Therefore, many parts are required, the construction is complicated and the cost is relatively high. In addition, the layout and form of the inspection channel are completely limited by the structure inside the tank. It needs to be installed after the construction of the cargo tank is completed, and the construction period is long and the efficiency is low.

[0036] This embodiment provides a ship with a liquid cargo tank detection channel, which is used to solve the technical problems in the prior art that the detection channel has a large number of parts, low construction efficiency and high cost.

[0037] Embodiment 1

[0038] like Figures 1-3 As shown, a ship with a liquid cargo tank detection channel provided in this embodiment has multiple liquid cargo tanks, and the liquid cargo tank bulkheads are provided along the height direction of the ship ( Figures 2-3 There are multiple horizontal girders 1 distributed at intervals in the middle (H direction), and the horizontal girders 1 are used to form the horizontal frame of the hull and are important components for improving the structural strength of the hull. A fence 3 is arranged on the outside of the horizontal girder 1, and the fence 3, the horizontal girder 1 and the bulkhead together form a detection channel 10. The horizontal girder 1 and the bulkhead are inherent structures of the ship. On the basis of the horizontal girder 1 and the bulkhead, the detection channel 10 can be formed by further adding the fence 3, thereby saving the number of parts and materials. When the horizontal girder 1 on the longitudinal bulkhead of the liquid cargo tank passes through the transverse strong frame 2 of the liquid cargo tank, it is blocked by the transverse strong frame 2. In this embodiment, a first passage hole 21 connecting the detection channel 10 is opened at the transverse strong frame 2 of the liquid cargo tank. The first passage hole 21 is directly opened on the transverse strong frame 2, so that the inspection personnel can pass through the transverse strong frame 2 in a straight line from the first passage hole 21, which reduces the walking distance and improves the inspection efficiency. Compared with the method of setting up a longitudinally extending detection platform outside the transverse strong frame 2 to form the detection channel 10, the number of parts is reduced and the use of materials is saved. In addition, in the prior art, the detection channel 10 is directly set outside the transverse strong frame 2, and the material for manufacturing the detection channel 10 needs to be special steel such as stainless steel. The utility model directly uses the horizontal girder 1 as the bottom of the detection channel 10, so that the factory does not need to supply stainless steel additionally, which greatly saves the manufacturing cost.

[0039] As shown Figure 1 in the figure, optionally, there are at least two cargo tanks arranged side by side along the length direction of the ship ( Figure 1 the L direction in the figure), and two adjacent cargo tanks are separated by a common bulkhead. A second passage hole (not shown in the figure) is opened on the common bulkhead, and the second passage hole communicates with the detection channels 10 of two adjacent cargo tanks. Using a common bulkhead to separate two cargo tanks reduces the number of bulkheads, thereby saving the materials for building the bulkheads and reducing the cost. And setting the second passage hole to communicate with the detection channels 10 of two adjacent cargo tanks facilitates the inspection personnel to complete the inspection of multiple cargo tanks only along one detection channel 10, thereby greatly improving the inspection efficiency.

[0040] Optionally, the first passage hole 21 and the second passage hole are elliptical holes or oblong holes extending vertically. When the elliptical holes and oblong holes extend vertically, the longer ends of these two hole shapes can correspond to the height of the inspection personnel, facilitating the inspection personnel to pass through upright, and increasing the convenience and timeliness of the inspection personnel to pass. Of course, the elliptical holes or oblong holes are only optional schemes for the shapes of the first passage hole 21 and the second passage hole. In other embodiments, they can also be other shapes, which are not limited too much here, as long as they are conducive to the passage of the inspection personnel.

[0041] In this embodiment, as Figure 3 shown in the figure, optionally, the width of the horizontal girder 1 connected with the fence 3 is greater than or equal to 70 cm, preferably 80 cm - 90 cm. The function of the detection channel 10 is to allow the inspection personnel to pass through for inspecting the cargo tanks, and its width needs to ensure the smooth passage of personnel. Therefore, the width of the horizontal girder 1 connected with the fence 3 needs to meet the requirement of being greater than or equal to 70 cm, preferably 80 cm - 90 cm.

[0042] Preferably, the width of the horizontal girder 1 not connected with the fence 3 is the same as that of the horizontal girder 1 connected with the fence 3, which can improve the versatility and interchangeability of the horizontal girder 1, without the need to manufacture the horizontal girder 1 by classification, and thus improve the manufacturing efficiency of the ship.

[0043] Optionally, there are at least two cargo tanks arranged side by side along the width direction of the ship ( Figure 1 the W direction in the figure), and two adjacent cargo tanks are separated by a partition bulkhead. Using a partition bulkhead to separate two cargo tanks reduces the number of bulkheads, thereby saving the materials for building the bulkheads and reducing the cost.

[0044] Optionally, the partition bulkhead is provided with a detection passage 10 only on one side. When the inspection personnel inspect the liquid cargo hold, they can check whether there are cracks in the partition bulkhead when standing in the detection passage 10 on either side of the partition bulkhead. Therefore, the partition bulkhead is provided with a detection passage 10 only on one side, which not only ensures the inspection effect but also reduces the number of detection passages 10, thus reducing the cost.

[0045] As Figure 1 shown, optionally, at least two detection passages 10 are arranged at intervals in the height direction of the ship. Among the two adjacent detection passages 10 in the height direction, a third passage hole 11 is provided in the horizontal girder 1 corresponding to the upper detection passage 10, and a climbing member is arranged between the third passage hole 11 and the adjacent lower detection passage 10. It can be understood that in order to ensure that the inspection personnel can check all places in the liquid cargo hold, it is necessary to arrange multiple detection passages 10 at different heights in the liquid cargo hold to meet the detection requirements. A third passage hole 11 is provided in the horizontal girder 1 corresponding to the upper detection passage 10 among every two adjacent detection passages 10 in the height direction, which can enable the inspection personnel to pass through the third passage hole 11 between the detection passages 10 at different heights through the climbing member, so as to check the visible areas of the liquid cargo hold at different heights, improving the inspection efficiency and quality. The climbing member can be, but is not limited to, a straight ladder.

[0046] Optionally, in the height direction of the ship, the two adjacent third passage holes 11 are arranged in one-to-one correspondence. Arranging the third passage holes 11 on the horizontal girders 1 corresponding to the detection passages 10 at different heights in one-to-one correspondence facilitates the inspection personnel to reach the detection passages 10 at all heights along one third passage hole 11, thus greatly improving the inspection efficiency.

[0047] Embodiment 2

[0048] This embodiment provides a ship with a liquid cargo hold detection passage. The basic structure of the ship provided in this embodiment is the same as that in Embodiment 1, only some settings are different. This embodiment will not repeat the settings that are the same as those in Embodiment 1.

[0049] As Figure 4 and Figure 5As shown, in this embodiment, the longitudinal bulkhead of the liquid cargo hold is provided with an avoidance platform 4 straddling the outside of the transverse strong frame 2. The avoidance platforms 4 are arranged in one-to-one correspondence with the transverse strong frames 2 and have communication channels, and the communication channels communicate with the detection channels 10 on both sides of the transverse strong frame 2. By providing the avoidance platform 4 with a communication channel on the outside of the transverse strong frame 2, the detection channels 10 on both sides of the transverse strong frame 2 can be communicated through the communication channel, without the need to integrally arrange the detection channels 10 outside all the transverse strong frames 2 in a suspended manner. That is, it is only necessary to correspondingly arrange the avoidance platform 4 at the transverse strong frame 2 to bypass the transverse strong frame 2, which not only reduces the occupancy rate of the detection channels 10 in the space of the liquid cargo hold, but also reduces the number of parts required to build the detection channels 10 and saves the construction cost.

[0050] Optionally, the avoidance platform 4 has a U-shaped structure, and both ends of the U-shaped structure are respectively located on opposite sides of the transverse strong frame 2 and are connected to the horizontal girder 1. The U-shaped structure of the avoidance platform 4 can adapt to the shape of the transverse strong frame 2, and both ends located on opposite sides of the transverse strong frame 2 can effectively avoid the transverse strong frame 2. Both ends of the U-shaped structure are also connected to the horizontal girder 1, which improves the construction and installation convenience and installation stability of the avoidance platform 4.

[0051] Optionally, the avoidance platform 4 includes a bottom plate that is horizontally arranged and U-shaped. A guardrail is provided on the side of the bottom plate away from the transverse strong frame 2, and the guardrail, the bottom plate, and the transverse strong frame 2 enclose to form a communication channel. Installing a guardrail on one side of the bottom plate can prevent inspection personnel from falling. In addition, using the inherent transverse strong frame 2 of the hull as the side wall of the communication channel also reduces the manufacturing cost of the communication channel.

[0052] Optionally, the avoidance platform 4 further includes a diagonal brace. The diagonal brace extends upward and away from the longitudinal bulkhead. The upper end of the diagonal brace is connected to the bottom of the bottom plate, and the lower end of the diagonal brace is connected to the longitudinal bulkhead. By providing a diagonal brace extending upward and away from the longitudinal bulkhead below the avoidance platform 4, a part of the downward force of the avoidance platform 4 can be converted into a thrust against the longitudinal bulkhead, thereby enhancing the connection strength between the avoidance platform 4 and the transverse strong frame 2 and the horizontal girder 1, and further enhancing the safety of the detection channel 10.

[0053] Optionally, the width of the communication channel is greater than or equal to 50 cm, preferably 60 cm - 70 cm. On the one hand, the width of the communication channel should meet the passage of personnel and thus cannot be too narrow. On the other hand, the bearing capacity of the avoidance platform 4 should be considered. If the communication channel is too wide, it is prone to safety hazards. Therefore, the width of the communication channel is greater than or equal to 50 cm, preferably 60 cm - 70 cm.

[0054] The above embodiments only illustrate the basic principles and characteristics of the present utility model. The present utility model is not limited by the above embodiments. Without departing from the spirit and scope of the present utility model, various changes and modifications can be made to the present utility model, and these changes and modifications all fall within the scope of the present utility model claimed. The scope of protection claimed for the present utility model is defined by the appended claims and their equivalents.

Claims

1. A ship with a detection channel for a liquid cargo tank, having a liquid cargo tank, characterized in that, At a preset height, a fence (3) is connected to the outside of the horizontal girder (1) of the liquid cargo hold bulkhead, and the horizontal girder (1), the fence (3) and the bulkhead of the liquid cargo hold enclose a detection channel (10); A first access hole (21) communicating with the detection channel (10) is provided at the transverse strong frame (2) of the liquid cargo hold; or, an avoidance platform (4) straddling the outside of the transverse strong frame (2) is provided on the longitudinal bulkhead of the liquid cargo hold. The avoidance platforms (4) are provided in one-to-one correspondence with the transverse strong frames (2) and have communication channels, and the communication channels communicate the detection channels (10) on both sides of the transverse strong frame (2).

2. The ship with a cargo tank inspection passage according to claim 1, characterized in that The width of the horizontal girder (1) connected with the fence (3) is greater than or equal to 70 cm.

3. The ship with a cargo tank inspection passage according to claim 1, characterized in that, At least two of the liquid cargo holds are arranged side by side along the length direction of the ship, and adjacent two liquid cargo holds are separated by a shared bulkhead. A second access hole is provided in the shared bulkhead, and the second access hole communicates the detection channels (10) of the adjacent two liquid cargo holds.

4. The ship with a cargo tank inspection passage according to claim 3, characterized in that, The first access hole (21) and the second access hole are elliptical holes or oblong holes extending vertically.

5. The ship with a cargo tank inspection passage according to claim 1, characterized in that, The avoidance platform (4) has a U-shaped structure, and both ends of the U-shaped structure are respectively located on opposite sides of the transverse strong frame (2) and are connected to the horizontal girder (1).

6. The ship with a liquid cargo tank inspection passage according to claim 5, characterized in that, The avoidance platform (4) includes a horizontally arranged bottom plate in a U shape. A guardrail is provided on a side of the bottom plate away from the transverse strong frame (2), and the guardrail, the bottom plate and the transverse strong frame (2) enclose to form the communication channel.

7. The ship with a cargo tank inspection passage according to claim 6, characterized in that The avoidance platform (4) further includes a diagonal brace. The diagonal brace extends upward and away from the longitudinal bulkhead. The upper end of the diagonal brace is connected to the bottom of the bottom plate, and the lower end of the diagonal brace is connected to the longitudinal bulkhead.

8. The ship with a cargo tank inspection passage according to claim 1, characterized in that, The width of the communication channel is greater than or equal to 50 cm.

9. The ship with a liquid cargo tank inspection passage according to any one of claims 1-8, characterized in that, At least two detection channels (10) are arranged at intervals along the height direction of the ship. Among two adjacent detection channels (10) in the height direction, a third access hole (11) is provided in the horizontal girder (1) corresponding to the upper detection channel (10), and a climbing member is provided between the third access hole (11) and the adjacent lower detection channel (10).

10. The ship with a liquid cargo tank detection channel according to claim 9, characterized in that, In the height direction of the ship, the adjacent two third access holes (11) are arranged in one-to-one correspondence.

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