Airbag-type sealing closing device for freeboard deck through unprotected opening of penetrating object

Abstract

The invention relates to an air bag type sealing and closing device for an unprotected opening of a freeboard deck passing through a penetrating object, the upper part of the unprotected opening of the deck is connected with a first annular plate through a split bolt and a sealing gasket, the upper part of the first annular plate is fixedly connected with an upright cylinder, and the inner side of the cylinder is fixedly connected with a second annular plate; an annular rubber air bag is arranged between the first annular plate and the second annular plate, an inflation opening communicated with the annular rubber air bag is formed in the side wall of the barrel, the annular rubber air bag expands towards the middle after being inflated to block an unprotected opening of a deck, and meanwhile a penetrating object penetrates through the unprotected opening all the time and does not need to be moved away. The deck opening with the penetrating object does not serve as an unprotected opening any more, and the requirements of ship stability and load line convention are met; a clamp is not needed, and the problem that the clamp is inconvenient to disassemble and assemble is solved; through remote control and on-site operation, the air bag can reach different pressures to meet the requirements of different tightness.

Description

Technical Field

[0001] The invention relates to an airbag type sealing closing device for an unprotected opening of a freeboard deck through a penetration object, belonging to the technical field of ship deck design. Background Art

[0002] According to the Load Line Convention, the openings on the freeboard deck must be watertight, and the openings with coamings must meet the required tightness requirements of wind and rain tightness. When calculating the stability of a ship, if there are unprotected cabins on the deck, they cannot be used as reserve buoyancy. There are only two ways to do this: raise the opening position to meet the height requirements of the flooding point, or lower the height of the center of gravity of the empty ship.

[0003] Especially for unprotected openings that need to pass through wire ropes, fiber ropes or cables, and these penetrations need to be retracted during operation, it is impossible to set a permanent closing device. These openings can only be arranged as centralized as possible, and surrounding walls are set to raise the opening position above the water inlet point. For openings that cannot be arranged in a centralized manner, many pipes will stand on the deck. For different ship types, deck area is an important technical indicator of ship types, and both surrounding walls and pipes will affect their deck operating area.

[0004] When temporarily closing an unprotected opening on a deck, a clamp and a seal are often used. The clamp is clamped with bolts in all directions to clamp the seal to achieve a sealing effect. However, there are the following problems: there are too many bolts on the clamp, which makes it inconvenient to disassemble and assemble; it cannot be disassembled quickly in an emergency, which is prone to accidents and unreliable safety. Summary of the invention

[0005] The object of the present invention is to provide an airbag type sealing closing device for an unprotected opening of a freeboard deck through a penetration, aiming to solve the technical problem of sealing closing design when an unprotected opening is left on the deck surface and penetrations such as wire ropes, fiber cables, and electric cables need to be passed through the opening.

[0006] The present invention adopts the following technical solutions:

[0007] An airbag-type sealing closing device for an unprotected opening of a freeboard deck through a penetration object, wherein the upper portion of the unprotected opening of the deck is connected to a first annular plate 2 by means of tension bolts and a sealing gasket 1, a vertical cylinder 3 is fixedly connected to the upper portion of the first annular plate 2, and a second annular plate 4 is fixedly connected to the inner side of the cylinder 3; an annular rubber airbag 5 is arranged between the first annular plate 2 and the second annular plate 4, an inflation port 301 connected to the annular rubber airbag 5 is arranged on the side wall of the cylinder 3, and the annular rubber airbag 5 expands toward the middle after being inflated to seal the unprotected opening of the deck, and at the same time, the penetration object always penetrates the unprotected opening without needing to be removed.

[0008] Preferably, the inner diameter of the sealing gasket 1 is equal to the inner diameter of the unprotected opening, and the central holes of the first annular plate 2 and the second annular plate 4 are equal in size and smaller than the unprotected opening.

[0009] Preferably, the penetrating object is a flexible long strip-shaped object.

[0010] Furthermore, the flexible long strip object is one or more of a steel wire rope, a fiber rope or an electric cable.

[0011] Preferably, the diameter of the unprotected opening is 219 mm and the diameter of the penetration is 90 mm.

[0012] Preferably, the rubber airbag 5 is inflated by a remote-controlled inflation component.

[0013] Furthermore, a pressure sensor is provided in the rubber airbag 5, and the pressure level can be adjusted to meet the requirements of different tightness levels.

[0014] Furthermore, a manual deflation point is provided on the top of the rubber airbag 5 .

[0015] A method for operating the above-mentioned airbag type sealing closure device for the unprotected opening of the freeboard deck through the penetration comprises the following steps:

[0016] When the penetration is not working, the rubber airbag is inflated to completely wrap the penetration to achieve a sealing effect; a pressure sensor is installed in the rubber airbag, and the pressure level can be adjusted to meet the requirements of different tightness levels;

[0017] When the penetrating object is working, the air in the airbag is discharged through remote control or on-site air release points, so that the penetrating object can be retracted and extended normally without generating friction with the rubber airbag.

[0018] The present invention has the following beneficial effects:

[0019] 1) Deck openings with penetrations are no longer considered unprotected openings, meeting the requirements of the Ship Stability and Load Line Convention.

[0020] 2) Compared with the existing temporary closing method for unprotected openings, the present invention can conveniently close and open unprotected openings on the deck that have long had objects penetrating through them by inflating and deflating the airbag, without the need to use clamps, and there will be no problem of inconvenient clamp disassembly and assembly, nor will there be the problem of the clamp being unable to be quickly disassembled in an emergency situation, leading to accidents.

[0021] 3) By setting up a rubber airbag, the airbag can reach different pressures to meet different tightness requirements through remote control and on-site operation, and the airbag pressure can also be monitored in real time.

[0022] 4) Easy maintenance, the rubber airbag is replaceable. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 The present invention is a structural cross-sectional view of an airbag type sealing closing device for an unprotected opening of a freeboard deck through a penetration.

[0024] In the figure, 1. sealing gasket, 2. first annular plate, 3. cylinder, 4. second annular plate, 5. annular rubber airbag, 301. inflation port. DETAILED DESCRIPTION

[0025] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0026] See also Figure 1 , an airbag type sealing closing device for an unprotected opening of a freeboard deck through a penetration object, wherein the upper portion of the unprotected opening of the deck is connected to a first annular plate 2 through tension bolts and a sealing gasket 1, a vertical cylinder 3 is fixedly connected to the upper portion of the first annular plate 2, and a second annular plate 4 is fixedly connected to the inner side of the cylinder 3; an annular rubber airbag 5 is arranged between the first annular plate 2 and the second annular plate 4, and an inflation port 301 connected to the annular rubber airbag 5 is arranged on the side wall of the cylinder 3. After the annular rubber airbag 5 is inflated, it expands toward the middle to seal the unprotected opening of the deck, and at the same time, the penetration object always penetrates the unprotected opening without needing to be removed.

[0027] In this embodiment, see Figure 1 The inner diameter of the sealing gasket 1 is equal to the inner diameter of the unprotected opening, and the central holes of the first annular plate 2 and the second annular plate 4 are equal in size and smaller than the unprotected opening.

[0028] In this embodiment, the penetrating object is a flexible long strip object, which can be a steel wire rope, a fiber rope or a cable, etc., which are not shown in the drawings.

[0029] In this embodiment, the rubber airbag 5 is inflated by a remote control inflation component.

[0030] In this embodiment, a pressure sensor is provided inside the rubber airbag 5, and the requirements of different tightness levels can be achieved by adjusting the pressure level.

[0031] In this embodiment, a manual deflation point is also provided on the top of the rubber airbag 5, which is not shown in the drawings.

[0032] Continue to see Figure 1Due to the different diameters of penetrations such as wire ropes, fiber ropes or cables, the sizes of unprotected openings on different ship types vary. Taking a 90mm diameter wire rope as an example, the diameter of the unprotected opening on the deck is about 219mm. This device is in the form of two upper and lower flange plates, which are locked by bolts. A rubber airbag layer is set in the middle of the flange plate, and airbag inflation points are set on both sides of the flange plate. The rubber airbag can be inflated remotely or locally through the inflation valve or pressing, and a manual deflation point is set on the top of the device.

[0033] When the penetrating object is not working, the rubber airbag is expanded by inflation to completely wrap the penetrating object to achieve a sealing effect.

[0034] When the penetrating object is working, the air in the airbag is discharged through remote control or on-site air release points, so that the penetrating object (such as a wire rope) can be normally retracted and released without causing friction with the rubber airbag, and does not hinder the normal operation of the penetrating object.

[0035] A pressure sensor is installed inside the rubber airbag, which can be remotely monitored and the pressure level can be adjusted to meet the requirements of different tightness levels.

[0036] The present invention makes the deck opening with penetration objects no longer be regarded as an unprotected opening, and meets the requirements of the Ship Stability and Load Line Convention; compared with the existing temporary closing method for unprotected openings, the present invention can conveniently close and open the unprotected deck opening with penetration objects for a long time by flushing and deflation of air bags, without the need to use clamps, and there will be no problem of inconvenient clamp disassembly and assembly, and there will be no problem of the clamp being unable to be quickly disassembled in an emergency situation, so as to cause accidents; by arranging a rubber air bag, the air bag can reach different pressures to meet different tightness requirements through remote control and on-site operation, and the air bag pressure can also be monitored in real time; maintenance is convenient, and the rubber air bag is replaceable.

[0037] The above are preferred embodiments of the present invention. A person skilled in the art may make various changes or improvements on this basis. Without departing from the general concept of the present invention, these changes or improvements should fall within the scope of protection claimed by the present invention.

Claims

1. An airbag type sealing closure device for unprotected openings of freeboard deck through penetrations, characterized in that: The upper part of the unprotected opening of the deck is connected to a first annular plate (2) via tension bolts and a sealing gasket (1); a vertical cylinder (3) is fixedly connected to the upper part of the first annular plate (2); and a second annular plate (4) is fixedly connected to the inner side of the cylinder (3); An annular rubber airbag (5) is arranged between the first annular plate (2) and the second annular plate (4), and an inflation port (301) connected to the annular rubber airbag (5) is provided on the side wall of the cylinder (3). After being inflated, the annular rubber airbag (5) expands toward the middle to seal the unprotected opening of the deck, and at the same time, the penetrating object always penetrates the unprotected opening without the need to be removed.

2. The airbag type sealing closure device for unprotected openings through penetrations of freeboard deck as claimed in claim 1, characterized in that: The inner diameter of the sealing gasket (1) is equal to the inner diameter of the unprotected opening, and the central holes of the first annular plate (2) and the second annular plate (4) are equal in size and are both smaller than the unprotected opening.

3. The airbag type sealing closure device for unprotected openings through penetrations of freeboard deck as claimed in claim 1, characterized in that: The penetrating object is a flexible long strip object.

4. The airbag type sealing closure device for unprotected openings through penetrations of freeboard deck as claimed in claim 3, characterized in that: The flexible long strip object is one or more of a steel wire rope, a fiber rope or a cable.

5. The airbag type sealing closure device for unprotected openings through penetrations of freeboard deck as claimed in claim 1, characterized in that: The diameter of the unprotected opening was 219 mm and the diameter of the penetration was 90 mm.

6. The airbag type sealing closing device for unprotected openings through penetrations of freeboard deck as claimed in claim 1, characterized in that: The rubber airbag (5) is inflated by a remote-controlled inflation component.

7. The airbag type sealing closure device for unprotected openings through penetrations of freeboard deck as claimed in claim 6, characterized in that: The rubber airbag (5) is provided with a pressure sensor, and the requirements of different tightness levels can be met by adjusting the pressure level.

8. The airbag type sealing closure device for unprotected openings through penetrations of freeboard deck as claimed in claim 7, characterized in that: The top of the rubber airbag (5) is also provided with a manual air release point.

9. A method for operating the airbag type sealing closing device for an unprotected opening of a freeboard deck through a penetration as claimed in any one of claims 1 to 5, characterized in that: The following steps are involved: When the penetration is not working, the rubber airbag is inflated to completely wrap the penetration to achieve a sealing effect; a pressure sensor is installed in the rubber airbag, and the pressure level can be adjusted to meet the requirements of different tightness levels; When the penetrating object is working, the air in the airbag is discharged through remote control or on-site air release points, so that the penetrating object can be retracted and extended normally without generating friction with the rubber airbag.

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