Detachable ship fuel oil tank wall protection device
By installing detachable clamps and longitudinal limiters on the common bulkhead between the ship's fuel tank and the cargo tank, and inserting the plate-like parts, the problems of increasing material and weight, high space occupation and maintenance costs in the prior art are solved, and flexible and effective bulkhead protection is achieved.
Patent Information
- Application Number
- CN202422564250.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-23
- Publication Date
- 2025-07-18
- Estimated Expiration
- 2034-10-23
AI Technical Summary
When protecting the bulkhead of the ship's fuel tank, the prior art has problems such as increasing material and weight, occupying space, and high maintenance costs, and lacks effective protective measures.
The detachable design of the ship fuel tank bulkhead protection device is used. By installing clamps and longitudinal restrictors on the public bulkheads, plate-like parts such as wooden boards or plastic boards are inserted to form a protective layer to avoid direct damage to the bulkhead.
It realizes low cost, low weight, low space occupancy and easy maintenance bulkhead protection, which can effectively prevent bulkhead wear and impact and reduce the risk of fuel leakage.
Smart Images
Figure CN223116537U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of ships, in particular to a detachable ship fuel tank bulkhead protection device. Background Art
[0002] For general cargo ships and multi-purpose ships, the storage space of the front and rear hatch covers of the cargo hold is usually reasonably utilized, and fuel tanks are set up in front and rear of the cargo hold to store fuel. This type of ship is suitable for a wide variety of cargoes, including various types of bulk cargoes such as coal, iron ore, etc., and can also transport various packaged goods, as well as piece goods such as steel products (steel pipes, steel plates, etc.), heavy goods, and wood products.
[0003] When unloading bulk cargo, a loader is usually required for tank clearing operations. The grab of the loader will be close to the bulkhead during operation, which will cause wear and even damage to the lower edge of the bulkhead over time. When loading and unloading general cargo or packaged goods, the cargo will shake during the lifting process due to environmental factors such as wind and waves and the proficiency of the crane operator, and there is a probability of hitting the cargo hold bulkhead. If the cargo itself is heavy and has a large range of movement during the lifting process, once it hits the cargo hold bulkhead, it may cause a certain degree of damage to the bulkhead, and even cracks and holes may appear. Once the common bulkhead between the fuel tank and the cargo hold is damaged and cannot be kept watertight, it will cause fuel leakage and cause environmental pollution.
[0004] Based on the above situation, shipowners often require ships to take necessary measures to protect the fuel tank bulkheads adjacent to the cargo holds. In practical applications, the following two methods are commonly used.
[0005] Method 1: Increase the thickness of the common bulkhead between the fuel tank and the cargo hold. By increasing the thickness of the bulkhead, the strength of the common bulkhead can be improved, thereby reducing the probability of damage to the bulkhead caused by external forces such as cargo, grabs, and forklifts.
[0006] Method 2: Set up an isolation void between the fuel tank and the cargo hold. By setting up an isolation void with a rib spacing, a physical separation is formed between the fuel tank and the cargo hold. Even if the front / rear bulkhead of the cargo hold is damaged, it will hardly affect the bulkhead of the fuel tank surrounded by the isolation void. The newly added isolation void needs to be equipped with 1 to 2 sets of air pipes and sounding pipes.
[0007] The first method of the prior art is to increase the thickness of the common bulkhead, but the disadvantages are as follows:
[0008] 1. There is no exact standard to determine how much thickness of steel plate should be added to ensure that the common bulkhead is not damaged. The thickness of the plate can only be set according to the experience of the builder or buyer, so the results vary.
[0009] 2. The increase in bulkhead thickness not only increases material costs, but also increases the empty ship weight, which will reduce the cargo loading weight accordingly.
[0010] 3. Once the common bulkhead is damaged by a relatively large external force, in order to avoid fuel leakage, it is still necessary to repair the damaged area, and even replace the steel plate locally. Therefore, maintenance is time-consuming, laborious and costly.
[0011] The second method of the prior art, the method of setting an isolating void space, has the following disadvantages:
[0012] 1. An additional bulkhead needs to be added to form an isolating void space, which not only increases the material and construction costs of steel, air pipes, sounding pipes, etc., but also increases the light ship weight of the ship, and correspondingly reduces the cargo loading weight.
[0013] 2. For the convenience of construction, the isolating void space has a minimum width requirement, usually one frame space. Therefore, it will occupy valuable cargo hold space. And the length and width dimensions of the cargo hold are crucial for this type of cargo ship.
[0014] Due to the above disadvantages of the prior art, many shipowners have to give up taking protective measures. Summary of the Utility Model
[0015] The technical problem to be solved by the present utility model is to overcome the above-mentioned defects existing in the prior art and provide a detachable protection device for the fuel tank bulkhead of a ship.
[0016] The present utility model solves the above technical problem through the following technical solutions:
[0017] A detachable protection device for the fuel tank bulkhead of a ship, which includes a common bulkhead arranged between the fuel tank and the cargo hold. A plurality of clamping members are fixedly arranged on the surface of the common bulkhead on the side of the cargo hold. The clamping members are vertically distributed along the common bulkhead, and guide grooves are formed between adjacent clamping members. A plate-shaped member is inserted into the guide grooves; the clamping members have longitudinal limiting ends that can limit the plate-shaped member from detaching from the clamping members along the longitudinal direction of the ship.
[0018] Further, the clamping members are T-shaped profiles; the webs of the T-shaped profiles are fixedly connected to the common bulkhead, and the panels of the T-shaped profiles are the longitudinal limiting ends of the clamping members.
[0019] Further, a plate-shaped member is inserted between the clamping members and the longitudinal bulkhead of the cargo hold, and longitudinal limiting members that can limit the plate-shaped member from moving along the longitudinal direction of the ship are fixedly arranged on the longitudinal bulkhead of the cargo hold.
[0020] Further, the longitudinal limiting members are vertically distributed along the longitudinal bulkhead of the cargo hold.
[0021] Further, the longitudinal limiting members are flat steel, and the flat steel is perpendicular to the longitudinal bulkhead of the cargo hold.
[0022] Further, there is a gap between the clamping members and the plate-shaped member that can conveniently allow the plate-shaped member to detach from the clamping members along the vertical direction of the ship.
[0023] Furthermore, the outer surface of the panel of the T-shaped section is lower than the end surface of the plate-shaped member facing the cargo hold, and the plate-shaped member has a clamped end portion clamped between the panel of the T-shaped section and the common bulkhead.
[0024] Furthermore, the outside of the clamped end portion is a notch portion, and the panel of the T-shaped section is located within the notch portion.
[0025] Furthermore, the lateral distance between the web of the T-shaped section and the clamped end portion of the plate-shaped member is smaller than the lateral distance between the panel of the T-shaped section and the longitudinal wall of the notch portion of the plate-shaped member.
[0026] Furthermore, the plate-shaped member is a wooden board or a plastic board.
[0027] The beneficial effects of the present utility model are as follows: The structure of the present utility model is simple, with less required materials and easy to obtain, low initial investment and low maintenance cost; by placing a plate-shaped member on the common bulkhead for isolation, the protection effect is good and the steel bulkhead will not be damaged. The present utility model adopts a detachable design, which can be placed when needed and removed when not needed, very flexible; once a part of the plate-shaped member is damaged, the replacement operation can be quickly completed, which is very convenient. The present utility model occupies less space and basically does not affect the cargo hold volume. BRIEF DESCRIPTION OF THE DRAWINGS
[0028] Figure 1 It is a top view of a preferred embodiment of the present utility model.
[0029] Figure 2 It is a side view of a preferred embodiment of the present utility model.
[0030] Figure 3 It is a top view of a preferred embodiment of the present utility model when the plate-shaped member is not installed.
[0031] Figure 4 It is a side view of a preferred embodiment of the present utility model when the plate-shaped member is not installed.
[0032] Figure 5 It is a schematic structural view between the clamping member and the plate-shaped member of a preferred embodiment of the present utility model.
[0033] Figure 6 It is a schematic structural view between the longitudinal limiting member and the plate-shaped member of a preferred embodiment of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0034] A preferred embodiment is given below and the present utility model will be described more clearly and completely in conjunction with the accompanying drawings.
[0035] As Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 andFigure 6 As shown in the figure, a detachable protection device for the fuel tank bulkhead of a ship includes a common bulkhead 13 provided between the fuel tank 10 and the cargo hold 11, and a plurality of clamping members 20 are fixedly arranged on the surface of the common bulkhead on the side of the cargo hold.
[0036] The distance between adjacent clamping members is equal. The clamping members are distributed at equal intervals along the common bulkhead.
[0037] The clamping members 20 are vertically distributed along the common bulkhead 13, and a guide groove 23 is formed between adjacent clamping members 20, and a plate-shaped member 30 is inserted into the guide groove 23.
[0038] The clamping member 20 is a T-shaped section; the web 21 of the T-shaped section is fixedly connected to the common bulkhead 13.
[0039] The clamping member 20 has a longitudinal limiting end that can limit the plate-shaped member from detaching from the clamping member along the longitudinal direction of the ship. The panel 22 of the T-shaped section is the longitudinal limiting end of the clamping member. The web 21 of the T-shaped section is used to limit the plate-shaped member from detaching from the clamping member along the transverse direction of the ship.
[0040] A plate-shaped member 30 is inserted between the clamping member 20 and the longitudinal bulkhead 14 of the cargo hold.
[0041] A longitudinal limiting member 15 that can limit the plate-shaped member from moving along the longitudinal direction of the ship is fixedly arranged on the longitudinal bulkhead 14 of the cargo hold. The longitudinal limiting member 15 is vertically distributed along the longitudinal bulkhead of the cargo hold.
[0042] The longitudinal limiting member 15 is a flat steel, and the flat steel is perpendicular to the longitudinal bulkhead of the cargo hold.
[0043] There is a gap between the clamping member 20 and the plate-shaped member 30 that can conveniently allow the plate-shaped member to detach from the clamping member along the vertical direction of the ship.
[0044] As Figure 5 shown, the outer surface of the panel 22 of the T-shaped section is lower than the end face 31 of the plate-shaped member facing the cargo hold, and the plate-shaped member 30 has a clamped end portion 32 clamped between the panel of the T-shaped section and the common bulkhead.
[0045] The outside of the clamped end portion 32 is a notch portion 33, and the panel of the T-shaped section is located in the notch portion.
[0046] As Figure 5 shown, the transverse distance between the web 21 of the T-shaped section and the clamped end portion 32 of the plate-shaped member is a, and the transverse distance between the panel of the T-shaped section and the longitudinal wall of the notch portion of the plate-shaped member is c, where a < c.
[0047] As Figure 6 shown, the outer surface of the longitudinal limiting member 15 is lower than the end face of the plate-shaped member 30 facing the cargo hold.
[0048] The plate-shaped member 30 is a wooden board.
[0049] In other embodiments, the plate-shaped member is a plastic plate or made of other materials.
[0050] The device includes a structural framework made of structural profiles. The structural framework is arranged on the cargo hold side of the common bulkhead between the fuel tank and the cargo hold and is made into vertical guide grooves for placing and fixing the plate-shaped members. The structural framework uses two types of structural profiles, which include T-shaped profiles fixed to the common bulkhead and flat steel fixed to the longitudinal bulkhead of the cargo hold.
[0051] To enable the interchange of the placement positions of all plate-shaped members, the profiles are arranged at equal intervals. The specific interval size can be comprehensively considered according to the width of the cargo hold, the weight of the plate-shaped members, and the operation flexibility. It is recommended to select 2 - 3m. The height of the structural framework is determined according to the range to be protected and usually starts from the inner bottom of the cargo hold.
[0052] The plate-shaped members can be wooden boards, especially hard wooden boards, such as pine wood, which can resist impacts of a certain intensity. The thickness of the wooden board is recommended to be 30 - 40mm. There are no special requirements for the width of the wooden board, and the widths of all wooden boards can be unified. The length of the wooden board is determined according to the interval between the profiles, and at the same time, the gap between the wooden board and the profiles needs to be considered to enable flexible placement and disassembly.
[0053] During use, workers can approach the top of the guide groove through a ladder. With the help of a crane or pulley (when there is a dark hold), when the wooden board is hoisted to the top of the guide groove by a steel cable, the steel cable with a right-angled hook at the end is used to hook the bottom of the wooden board, and then the wooden board is placed one by one along the guide groove. When the wooden board is not needed or when replacing a damaged one, the wooden board can be lifted out, and the operation is very simple.
[0054] The protection principle of this device: All the wooden boards form a protection surface. Once impacted by external forces such as goods, the impacted wooden board can well conduct the local impact force to the whole wooden board, significantly reducing the load that should originally be borne by the local structural bulkhead, thereby achieving the purpose of protecting the common bulkhead.
[0055] To enable the flexible placement, disassembly, and limitation of the wooden board through the guide groove formed by the structural framework, chamfering treatment needs to be performed on one side at both ends of the wooden board to match the profile shape. When placed in this structural framework, the wooden board mainly bears its own gravity and the gravity of the upper wooden board. Even affected by the ship's longitudinal inclination, pitching, etc., there will be no large overturning force towards the outside. Therefore, the force on the profiles is limited. Except for considering the force during loading and unloading operations, there are no other special requirements for their strength.
[0056] Chamfering treatment is performed on one side at both ends of the wooden board, that is, a notch part is set. At the same time, there must be a necessary gap between the wooden board and the structural framework. As Figure 5 shown, a < c, which can prevent the chamfered part of the wooden board from being damaged by the profiles. In addition, to prevent the structural framework from being damaged by forklifts, goods, etc., the outer surface of the profiles should be lower than the outer side surface of the wooden board.
[0057] The dimensions, gaps and profiles of the wooden boards should be selected according to the actual situation.
[0058] The detachable protective device for the ship fuel tank bulkhead of the present utility model can prevent the common bulkhead between the fuel tank and the cargo hold from being damaged by external forces such as goods, grabs, forklifts, etc. during the loading and unloading operations, and avoid the common bulkhead being damaged due to long-term wear.
[0059] Compared with the conventional protection methods of increasing the thickness of the bulkhead steel plate or setting up isolation void spaces, the protective device of the present utility model neither needs to increase a large amount of additional steel weight, thus saving costs, nor needs to sacrifice valuable cargo hold loading space.
[0060] In addition, when adopting the conventional protection method, once impacted, the bulkhead may be deformed or even cracked. In severe cases, it may lead to fuel leakage in the fuel tank, resulting in environmental pollution, and local plate replacement is required, which is time-consuming, laborious and costly for maintenance. However, the protective device of the present utility model can well protect the bulkhead, and the damaged wooden boards are also very easy to replace.
[0061] The present utility model has the following advantages:
[0062] 1. Simple structure, less materials required, easy to obtain, low initial investment and low maintenance cost.
[0063] 2. By placing plate-like members on the common bulkhead for isolation, the protection effect is good and the steel bulkhead will not be damaged.
[0064] 3. Adopting a detachable design, it can be placed when needed and removed when not needed, which is very flexible; once a part of the plate-like member is damaged, the replacement operation can be quickly completed, which is very convenient.
[0065] 4. Occupying less space, it basically does not affect the cargo hold volume.
[0066] Although the specific implementation manners of the present utility model have been described above, those skilled in the art should understand that this is only for illustration purposes. The protection scope of the present utility model is defined by the appended claims. Without departing from the principles and essence of the present utility model, those skilled in the art can make various changes or modifications to these implementation manners, but these changes and modifications all fall within the protection scope of the present utility model.
Claims
1. A detachable protective device for the bulkhead of a ship's fuel tank, which comprises a common bulkhead arranged between the fuel tank and the cargo hold, and is characterized in that, A plurality of clamping members are fixedly provided on the surface of the common bulkhead on the cargo hold side. The clamping members are vertically distributed along the common bulkhead, and guide grooves are formed between adjacent clamping members. A plate-like member is inserted into the guide grooves; the clamping members have longitudinal limiting ends that can limit the plate-like member from disengaging from the clamping members along the longitudinal direction of the ship.
2. The detachable ship fuel tank bulkhead protection device according to claim 1, characterized in that The clamping members are T-shaped profiles; the webs of the T-shaped profiles are fixedly connected to the common bulkhead, and the faces of the T-shaped profiles are the longitudinal limiting ends of the clamping members.
3. The detachable ship fuel tank bulkhead protection device according to claim 2, characterized in that A plate-like member is inserted between the clamping members and the longitudinal bulkhead of the cargo hold, and longitudinal limiting members that can limit the plate-like member from moving along the longitudinal direction of the ship are fixedly provided on the longitudinal bulkhead of the cargo hold.
4. The detachable ship fuel tank bulkhead protection device according to claim 3, characterized in that, The longitudinal limiting members are vertically distributed along the longitudinal bulkhead of the cargo hold.
5. The detachable protection device for the ship fuel tank bulkhead according to claim 4, characterized in that, The longitudinal limiting members are flat steel, and the flat steel is perpendicular to the longitudinal bulkhead of the cargo hold.
6. The detachable ship fuel tank bulkhead protection device according to claim 3, wherein, There is a gap between the clamping members and the plate-like member that can conveniently allow the plate-like member to disengage from the clamping members along the vertical direction of the ship.
7. The detachable ship fuel tank bulkhead protection device according to claim 2, characterized in that The outer surface of the face of the T-shaped profile is lower than the end face of the plate-like member facing the cargo hold, and the plate-like member has a clamped end portion clamped between the face of the T-shaped profile and the common bulkhead.
8. The detachable protection device for the fuel tank bulkhead of a ship according to claim 7, characterized in that, The outside of the clamped end portion is a notch portion, and the face of the T-shaped profile is located within the notch portion.
9. The detachable ship fuel tank bulkhead protection device according to claim 8, wherein The lateral distance between the web of the T-shaped profile and the clamped end portion of the plate-like member is smaller than the lateral distance between the face of the T-shaped profile and the longitudinal wall of the notch portion of the plate-like member.
10. The detachable ship fuel tank bulkhead protection device according to claim 1, characterized in that, The plate-like member is a wooden board or a plastic board.