Damper and gas carrier

Abstract

The application relates to the technical field of ship ventilation, and particularly discloses a damper and a gas transport ship. The damper comprises a ventilation pipeline and a rotating shaft; the rotating shaft is movably installed in the ventilation pipeline, the rotating shaft partially extends into the ventilation pipeline, and the part of the rotating shaft located in the ventilation pipeline is fixedly connected with a damper assembly; the damper assembly comprises a damper plate and an elastic sealing ring sleeved on the edge of the damper plate; the rotating shaft can rotate around the axis of the rotating shaft to switch the damper between an open state and a closed state; when the damper is in the closed state, the outer surface of the elastic sealing ring is matched and attached to the inner wall of the ventilation pipeline to seal the ventilation pipeline; and when the damper is in the open state, part of the elastic sealing ring is arranged in a spaced mode with the inner wall of the ventilation pipeline to open the ventilation pipeline. The damper is provided with the elastic sealing ring, the air tightness of the damper is improved, the toxic gas cannot enter the cabin through the ventilation pipeline, and the life safety of the users is ensured.

Description

Technical Field

[0001] This invention relates to the field of marine ventilation technology, and more particularly to air dampers and gas transport ships. Background Technology

[0002] When a gas carrier carries toxic goods, the "Code for Construction and Equipment of Ships Carrying Liquefied Gases in Bulk" (hereinafter referred to as the "Code") has specific requirements for ventilation in living quarters, service quarters, and control stations. The ventilation of these quarters must meet the requirements of IGC Code 3.2.6 of the Code (2018), namely, "All air inlets and outlets of living quarters, service quarters, and control stations shall be operable inside the quarters when carrying toxic goods. Closure devices to prevent the entry of toxic gases shall achieve a reasonable degree of airtightness, and ordinary closure devices without gaskets or sealing devices shall be considered unqualified."

[0003] To prevent toxic and harmful gases from entering the compartments and endangering the health of the crew, it is necessary to install air dampers on the ventilation ducts. In the event of a toxic gas leak, the dampers can be closed to prevent the gas from entering the compartment. Conventional air dampers include... Figures 1 to 4 As shown, the system includes a ventilation duct 200' and a rotating shaft 300' that partially extends into the ventilation duct 200'. The rotating shaft 300' is rotatably connected to the ventilation duct 200'. A handle 400' is rotatably fixed to the portion of the rotating shaft 300' outside the ventilation duct 200', and a damper 100' is fixed to the portion of the rotating shaft 300' inside the ventilation duct 200'. The handle 400' can drive the damper 100' to rotate around the axis of the rotating shaft 300', switching the damper between an open and closed state. However, due to the large gap between the damper 100' and the inner wall of the ventilation duct 200', and the lack of gaskets or sealing devices, the damper in the closed state still cannot completely block the gas, allowing toxic gases to enter the cabin through the gap. Therefore, the existing damper cannot effectively block toxic gases, does not meet regulatory requirements, and is not recognized by ship inspection authorities.

[0004] To address the aforementioned problems and ensure the safety of crew members, there is an urgent need for an airtight damper for use in ventilation ducts to improve upon the shortcomings of existing dampers. Summary of the Invention

[0005] The purpose of this invention is to provide a ventilation damper and a gas transport vessel to solve the airtightness problem of the ventilation damper, so that toxic gases cannot enter the cabin through the ventilation duct, thereby ensuring the safety of the personnel.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] Air damper, including ventilation duct and pivot;

[0008] The rotating shaft is movably installed in the ventilation duct, with a portion of the shaft extending into the duct. A regulating assembly is fixedly connected to the portion of the shaft within the duct. The regulating assembly includes a regulating plate and an elastic sealing ring fitted around the edge of the regulating plate. The rotating shaft can rotate around its axis, allowing the regulating damper to switch between an open and closed state. When the damper is closed, the outer surface of the elastic sealing ring matches and fits against the inner wall of the ventilation duct, sealing the duct. When the damper is open, a portion of the elastic sealing ring is spaced apart from the inner wall of the ventilation duct, opening the duct. The elastic sealing ring includes a positioning ring and a tubular ring. The inner ring of the positioning ring has a positioning groove. The edge of the regulating plate is bent with a folded edge, which is inserted into the positioning groove. The tubular ring is fitted around the outer ring of the positioning ring.

[0009] As a preferred technical solution for the air regulating damper, the maximum width of the air regulating component is L1, and the length of the ventilation duct is L, where L is greater than L1.

[0010] As a preferred technical solution for the air regulating damper, when the air regulating damper is in the closed state, the length direction of the ventilation duct is perpendicular to the plane where the air regulating component is located; when the air regulating damper is in the open state, the air regulating component rotates 90°.

[0011] As a preferred technical solution for the air regulating damper, a number of positioning clips are also fixedly connected in the positioning slot, and the positioning clips press against the surface of the folded edge.

[0012] As a preferred technical solution for the air damper, a handle is fixedly connected to the portion of the rotating shaft located outside the ventilation duct, and the handle is used to drive the rotating shaft to rotate.

[0013] As a preferred technical solution for the air damper, a locking pin is movably installed on the outer wall of the ventilation duct, the handle passes through a limit groove, the locking pin passes through the limit groove, and the locking pin is selectively locked to the handle.

[0014] As a preferred technical solution for the air regulating damper, the projection of the ventilation duct along its length is rectangular, and each corner of the inner wall of the ventilation duct is provided with sealing filler. The length direction of the sealing filler is the same as that of the ventilation duct. When the air regulating damper is in the closed state, the outer surface of the elastic sealing ring matches and fits against the inner wall of the ventilation duct.

[0015] As a preferred technical solution for the air damper, the elastic sealing ring is made of fire-resistant rubber.

[0016] As a preferred technical solution for the air damper, both ends of the ventilation duct are fixedly connected with connecting flanges.

[0017] Gas transport vessel, including the hull and the aforementioned air damper.

[0018] The beneficial effects of this invention are:

[0019] This air-regulating damper utilizes an elastic sealing ring at the edge of the air-regulating plate. The deformation of the tubular ring allows its outer surface to fit snugly against the inner wall of the ventilation duct, ensuring a tight seal. The rotating shaft allows for precise and adjustable movement of the damper, enabling smooth switching between open and closed states. The folded edge, fitted into a positioning slot, ensures a stable connection between the positioning ring and the folded edge, allowing for a detachable connection between the air-regulating plate and the elastic sealing ring. The hollow cylindrical structure of the tubular ring provides excellent deformation and recovery capabilities, further enhancing its sealing effect. This simple structure, achieved through the installation of an elastic sealing ring on the air-regulating plate, achieves a reasonable level of airtightness, effectively solving the airtightness problem. This prevents toxic and harmful gases from entering the cabin through the ventilation duct when the damper is closed, meeting regulatory requirements and ensuring the safety of personnel. Attached Figure Description

[0020] Figure 1 This is a first-view cross-sectional view of an existing damper in the open state;

[0021] Figure 2 This is a second-view cross-sectional view of an existing damper in the open state;

[0022] Figure 3 This is a first-view cross-sectional view of an existing damper in the closed state;

[0023] Figure 4 This is a second-view cross-sectional view of an existing damper in the closed state;

[0024] Figure 5 This is a schematic diagram of the structure of the air regulating damper provided in an embodiment of the present invention;

[0025] Figure 6 This is a cross-sectional view of the air regulating damper provided in the embodiment of the present invention in the open state;

[0026] Figure 7 This is a cross-sectional view of the air regulating damper in the closed state according to an embodiment of the present invention;

[0027] Figure 8 This is a top view of the damper in the closed state provided in an embodiment of the present invention;

[0028] Figure 9 This is a cross-sectional view of the elastic sealing ring provided in an embodiment of the present invention.

[0029] Figures 1 to 4 middle:

[0030] 100', air regulating plate; 200', ventilation duct; 300', rotating shaft; 400', handle;

[0031] Figures 5 to 9 middle:

[0032] 100. Air regulating plate; 200. Ventilation duct; 210. Connecting flange; 300. Rotary shaft; 400. Handle; 500. Sealing packing; 600. Elastic sealing ring; 610. Tubular ring; 620. Positioning ring; 621. Positioning slot; 622. Positioning clamp; 700. Locking pin. Detailed Implementation

[0033] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "first position" and "second position" refer to two different positions. Furthermore, "above," "on top of," and "over" the first feature in relation to the second feature includes the first feature directly above and diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "under," and "below" the first feature in relation to the second feature includes the first feature directly below and diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0035] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0036] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0037] like Figures 5 to 9 As shown, this embodiment provides an air regulating damper, including a ventilation duct 200 and a rotating shaft 300. The rotating shaft 300 is movably installed in the ventilation duct 200, with a portion of the rotating shaft 300 extending into the ventilation duct 200. An air regulating assembly is fixedly connected to the portion of the rotating shaft 300 located within the ventilation duct 200. The air regulating assembly includes an air regulating plate 100 and an elastic sealing ring 600 sleeved on the edge of the air regulating plate 100. The rotating shaft 300 can rotate around its axis, allowing the air regulating damper to switch between an open and closed state. When the air regulating damper is in the closed state, the elastic sealing ring 600... The outer surface of the sealing ring 600 matches and fits against the inner wall of the ventilation duct 200, thus sealing the ventilation duct 200. When the damper is in the open state, part of the elastic sealing ring 600 is spaced apart from the inner wall of the ventilation duct 200, thus opening the ventilation duct 200. The elastic sealing ring 600 includes a positioning ring 620 and a tubular ring 610. The inner ring of the positioning ring 620 has a positioning groove 621. The edge of the damper plate 100 is bent with a folded edge, which is matched and inserted into the positioning groove 621. The tubular ring 610 is sleeved on the outer ring of the positioning ring 620.

[0038] The damper, by setting an elastic sealing ring 600 at the edge of the damper plate 100, allows the outer surface of the elastic sealing ring 600 to match and fit against the inner wall of the ventilation duct 200 through the deformation of the tubular ring 610, thereby ensuring the sealing effect of the damper assembly on the ventilation duct 200. The rotating shaft 300 enables precise and adjustable movement of the damper assembly, allowing for smooth switching between open and closed states. The folded edge, fitted into the positioning slot 621, ensures the connection stability between the positioning ring 620 and the folded edge, achieving a detachable connection between the damper plate 100 and the elastic sealing ring 600. The hollow cylindrical structure of the tubular ring 610 provides excellent deformation and recovery capabilities, thus effectively sealing the damper. The above structure is simple to manufacture. By installing an elastic sealing ring 600 on the air regulating plate 100, the air regulating door achieves a reasonable airtightness, effectively solving the airtightness problem of the air regulating door. This prevents toxic and harmful gases from entering the cabin through the ventilation duct 200 when the air regulating door is closed, meeting the regulatory requirements and ensuring the safety of the users.

[0039] In this embodiment, the maximum width of the air regulating component is L1, and the length of the ventilation duct 200 is L, where L is greater than L1. The limitation that L is greater than L1 avoids the situation where the air regulating component extends beyond the ventilation duct 200, thus avoiding the risk of positional conflict between the air regulating component and the external environment, thereby ensuring the stable operation of the air regulating damper.

[0040] For example, when the damper is closed, the length of the ventilation duct 200 is perpendicular to the plane of the damper assembly. When the damper is open, the damper assembly rotates 90°. This design maximizes the coordination of the damper assembly's placement, simplifies its structure, reduces the space it occupies, and lowers the production cost of the damper. Furthermore, when the damper assembly, perpendicular to the length of the ventilation duct 200, rotates 90°, the length of the ventilation duct 200 becomes parallel to the plane of the damper assembly. This vertically positioned damper assembly minimizes the resistance to the airflow through the ventilation duct 200, facilitating rapid air passage and ensuring stable damper operation.

[0041] In this embodiment, a plurality of positioning clips 622 are also fixedly connected within the positioning slot 621, and the positioning clips 622 press against the surface of the folded edge. Specifically, the positioning clips 622 are made of metal, and the bending angle of the folded edge is 90°. The design of the positioning clips 622 being able to be tightly locked onto the folded edge further ensures the positioning effect of the folded edge within the positioning slot 621, reduces the risk of the air regulating plate 100 accidentally detaching from the positioning ring 620, and ensures the stable operation of the air regulating damper.

[0042] In this embodiment, the depth of the positioning groove 621 is 15 mm, the total thickness of the elastic sealing ring 600 is 23 mm, and the diameter of the tubular ring 610 cross section is 15 mm.

[0043] For example, a handle 400 is fixedly connected to the portion of the rotating shaft 300 located outside the ventilation duct 200. The handle 400 is used to drive the rotating shaft 300 to rotate. The handle 400 facilitates the user's switching of the damper's status, helps the user to observe the current status of the damper in a timely manner, helps reduce the user's workload, and also reduces the risk of misoperation.

[0044] Furthermore, a locking pin 700 is movably installed on the outer wall of the ventilation duct 200. The handle 400 passes through a limiting groove, and the locking pin 700 passes through the limiting groove, selectively locking the handle 400. This design, where the locking pin 700 selectively locks the handle 400, allows for selective positional fixing between the handle 400 and the ventilation duct 200. This facilitates locking the handle 400 after adjustment, effectively reducing the probability of the damper switching states due to accidents, and thus ensuring the long-term stable operation of the damper.

[0045] In this embodiment, the air regulating plate 100 is a cuboid, and all four corners of the air regulating plate 100 are rounded.

[0046] In the prior art, the reason why the damper cannot effectively block toxic and harmful gases when closed is that there is a certain gap between the damper plate 100 and the inner wall of the ventilation duct 200.

[0047] In this embodiment, the projection of the ventilation duct 200 along its length is rectangular. Each corner of the inner wall of the ventilation duct 200 is provided with sealing filler 500, the length direction of which is the same as that of the ventilation duct 200. When the damper is closed, the outer surface of the elastic sealing ring 600 matches and adheres to the inner wall of the ventilation duct 200 and the inner sidewall of the filler. Specifically, the sealing filler 500 comprises a semi-circular sealing material. By filling the four right-angled areas of the inner wall of the ventilation duct 200 with sealing filler 500, the elastic sealing ring 600 is compressed and tightly adheres to the inner wall of the ventilation duct 200 and the sealing filler 500, thereby achieving a complete seal and effectively preventing external toxic and harmful gases from entering the cabin through the damper.

[0048] For example, the elastic sealing ring 600 is made of fire-retardant rubber. Fire-retardant rubber has the advantages of strong protection and good elasticity, which can smoothly meet the setting purpose of the elastic sealing ring 600, thereby ensuring the long-term stable operation of the damper.

[0049] In this embodiment, both ends of the ventilation duct 200 are fixedly connected with connecting flanges 210. The connection flanges 210 facilitate the connection between the ventilation duct 200 and external components, reduce the assembly difficulty of the damper in the external environment, and improve the disassembly and assembly efficiency of the damper.

[0050] This embodiment also provides a gas transport vessel, including a hull and the aforementioned air damper. This gas transport vessel is used to transport toxic and harmful gases. By installing the aforementioned air damper on the hull, the risk of personnel being exposed to toxic and harmful gases can be effectively reduced.

[0051] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A damper, characterized in that include: Ventilation duct (200); A rotating shaft (300) is movably installed in the ventilation duct (200). A portion of the rotating shaft (300) extends into the ventilation duct (200). A regulating assembly is fixedly connected to the portion of the rotating shaft (300) located within the ventilation duct (200). The regulating assembly includes a regulating plate (100) and an elastic sealing ring (600) sleeved on the edge of the regulating plate (100). The rotating shaft (300) is rotatable around its axis, allowing the regulating damper to switch between an open and closed state. When the regulating damper is in the closed state, the outer surface of the elastic sealing ring (600) contacts the ventilation duct (200). The inner wall of the ventilation duct (200) is matched and fitted to seal the ventilation duct (200); when the damper is in the open state, part of the elastic sealing ring (600) is spaced apart from the inner wall of the ventilation duct (200) to open the ventilation duct (200); the elastic sealing ring (600) includes a positioning ring (620) and a tubular ring (610), the inner ring of the positioning ring (620) is provided with a positioning groove (621), the edge of the damper (100) is bent with a folded edge, the folded edge is matched and inserted into the positioning groove (621), and the tubular ring (610) is sleeved on the outer ring of the positioning ring (620); A plurality of positioning clips (622) are also fixedly connected in the positioning slot (621), and the positioning clips (622) press against the surface of the folded edge; A handle (400) is fixedly connected to the portion of the rotating shaft (300) located outside the ventilation duct (200), and the handle (400) is used to drive the rotating shaft (300) to rotate; A locking pin (700) is movably installed on the outer wall of the ventilation duct (200). The handle (400) passes through a limiting groove. The locking pin (700) passes through the limiting groove and is selectively locked to the handle (400).

2. The damper according to claim 1, characterized in that The maximum width of the air conditioning component is L1, and the length of the ventilation duct (200) is L, where L is greater than L1.

3. The damper according to claim 1, wherein When the damper is in the closed state, the length of the ventilation duct (200) is perpendicular to the plane where the damper is located. When the damper is in the open state, the damper rotates 90°.

4. The damper according to claim 1, wherein The projection of the ventilation duct (200) along its length is rectangular. Each corner of the inner wall of the ventilation duct (200) is provided with sealing filler (500). The length direction of the sealing filler (500) is the same as that of the ventilation duct (200). When the damper is in the closed state, the outer surface of the elastic sealing ring (600) matches and fits against the inner wall of the ventilation duct (200).

5. The damper according to claim 1, wherein The elastic sealing ring (600) is made of fire-resistant rubber.

6. Damper according to any of claims 1-5, characterized in that Both ends of the ventilation duct (200) are fixed with connecting flanges (210).

7. A gas carrier, characterised in that Includes the ship body and the wind damper as described in any one of claims 1-6.

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