Ship and ventilation structure

Abstract

The utility model provides a ship and a ventilation structure, and the ventilation structure comprises a communicating piece which is hollow; a first interface, a second interface and a third interface which are communicated with the interior are formed in the communicating piece; the first interface is communicated with an air duct; the connecting flange is arranged at the second interface; the connecting flange is configured to be detachably connected with an external shore pipeline; the blind plate is configured to be detachably connected with the connecting flange and used for closing the second connector; the ventilation cap is arranged at the third connector, and the ventilation cap is configured to be used for opening or closing the third connector. The three connectors are formed in the communicating piece, the second connector is used for being detachably connected with an external shore communicating pipeline when the ship is in shore, the third connector is used for being opened when the ship operates normally, gas in a cargo hold can be exhausted from one of the second connector and the third connector, and connection and use by workers are facilitated; and the influence of odor exhausted from the cargo hold on shoreside workers when the ship is in shore is reduced, and the shore ventilation requirement is met.

Description

Technical Field

[0001] The utility model relates to the technical field of ships, in particular to a ship and a ventilation structure. Background Art

[0002] Each cabin on a ship requires ventilation. To ensure effective ventilation, the cargo hold is typically connected to a straight pipe that extends upward to the open deck. This pipe allows gases within the cargo hold to be drawn outboard, ensuring good ventilation for the ship's environment. Container ships transporting waste containers can produce odors in the cargo hold. While at sea, this odor can be discharged into the atmosphere through the straight pipe. However, when docked, the odor may cause discomfort to shoreside staff, disrupting their work. Utility Model Content

[0003] The purpose of the utility model is to provide a ship and a ventilation structure to solve the problems in the prior art.

[0004] In order to solve the above technical problems, the present invention provides a ship and a ventilation structure, comprising:

[0005] A connecting piece having a hollow interior; the connecting piece is provided with a first interface, a second interface, and a third interface communicating with the interior; the first interface is used to communicate with the air duct;

[0006] a connecting flange, provided at the second interface; the connecting flange being configured to be detachably connected to an external shore pipeline;

[0007] a blind plate configured to be detachably connected to the connecting flange and used to close the second interface;

[0008] A vent cap is provided at the third interface, and the vent cap is configured to open or close the third interface; wherein:

[0009] The third interface is opened on the ventilation cap, and the blind plate is connected to the connecting flange and closes the second interface;

[0010] When the vent cap closes the third interface, the connecting flange is connected to the shore pipeline so that the second interface is connected to the shore pipeline.

[0011] In one embodiment, the connecting piece includes a first tube head, a second tube head, and a third tube head, wherein an axial opening of the first tube head, an axial opening of the second tube head, and an axial opening of the third tube head are connected to each other; another axial opening of the first tube head is the first interface; another axial opening of the second tube head is the second interface; and another axial opening of the third tube head is the third interface.

[0012] The third pipe head extends in a vertical direction, and the third interface is located at the top of the third pipe head.

[0013] In one embodiment, the axial extension direction of the first tube head and the axial extension direction of the third tube head are staggered or coaxial with each other.

[0014] In one embodiment, the axial extension direction of the second tube head and the axial extension direction of the third tube head are relatively inclined or relatively vertical;

[0015] The axial extension direction of the first tube head and the axial extension direction of the second tube head are relatively inclined or relatively vertical.

[0016] In one embodiment, the first tube head, the second tube head and the third tube head are integrally provided.

[0017] In one embodiment, the vent cap includes a support tube, a sleeve cap, an adjustment rod and a sealing cover;

[0018] The support tube is arranged on the top of the third tube head, and the interior of the support tube is connected from top to bottom and communicates with the third interface;

[0019] The cap has an open groove, the cap cover is arranged on the top of the support tube with the open groove facing downward, the inner bottom surface of the open groove is spaced from the top of the support tube, and the inner peripheral wall of the open groove is spaced from the outer peripheral wall of the support tube;

[0020] The adjusting rod is arranged on the sleeve cap, the top end of the adjusting rod extends upward from the sleeve cap, and the bottom end of the adjusting rod extends downward into the support tube;

[0021] The sealing cover is located between the opening groove and the support tube, the sealing cover is threadedly connected to the adjusting rod, the sealing cover is slidably connected to the sleeve cap along the up and down directions, and the adjusting rod can rotate to drive the sealing cover to move up and down along the axial direction of the adjusting rod to open or close the upper end opening of the support tube.

[0022] In one embodiment, the ventilation structure further includes a base tube and a mounting tube connected in sequence;

[0023] The base pipe is arranged on the deck and is in communication with the air duct;

[0024] The mounting tube is connected between the base tube and the first interface of the connecting piece; a fan is provided in the mounting tube, and the fan is configured to control the airflow from the air duct to the inside of the connecting piece.

[0025] In one embodiment, flange connections are adopted between the first interface of the connecting piece and the mounting pipe, and between the mounting pipe and the base pipe.

[0026] The present application also provides a ship, comprising: the above-mentioned ventilation structure;

[0027] A hull, wherein a cargo hold and an air duct are provided inside the hull, and a deck is provided on the top of the hull; an axial end opening of the air duct is connected to the cargo hold, and the other axial end opening of the air duct extends upward to the deck, and the first interface of the connecting piece is correspondingly connected to the air duct.

[0028] It can be seen from the above technical solution that the advantages and positive effects of the utility model are:

[0029] The ship and ventilation structure in the utility model have three interfaces on the connecting piece, and the gas in the cargo hold can be discharged from the second interface or the third interface at will, which is convenient for the staff to connect and use, reduces the impact of the odor discharged from the cargo hold on the shore staff when the ship is docked, and meets the shore ventilation needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the local structure of the ship in the utility model.

[0031] Figure 2 It is a structural schematic diagram of an embodiment of the ventilation structure in the present utility model.

[0032] Figure 3 It is a structural diagram of the connecting piece in the utility model.

[0033] Figure 4 It is a structural schematic diagram of the ventilating cap in the utility model.

[0034] In the accompanying drawings: 1-hull; 11-cargo hold; 12-air duct; 13-deck; 2-ventilation structure; 21-connecting piece; 211-first pipe head; 2111-first interface; 212-second pipe head; 2121-second interface; 213-third pipe head; 2131-third interface; 22-connecting flange; 23-blind plate; 24-ventilation cap; 241-support pipe; 242-cover; 2421-opening slot; 243-adjusting rod; 244-sealing cover; 245-handwheel; 25-mounting pipe; 26-base pipe; 27-fan. DETAILED DESCRIPTION

[0035] Although the present invention can be easily embodied as embodiments of different forms, only some of the specific embodiments are shown in the drawings and will be described in detail in this specification. It should be understood that this description should be regarded as an exemplary illustration of the principles of the present invention and is not intended to limit the present invention to that described herein.

[0036] Thus, a feature indicated in this specification is intended to illustrate one of the features of one embodiment of the present invention, rather than implying that every embodiment of the present invention must have the described feature. Furthermore, it should be noted that this specification describes many features. Although certain features can be combined together to illustrate possible system designs, these features can also be used in other, not explicitly described, combinations. Thus, unless otherwise noted, the described combinations are not intended to be limiting.

[0037] In the embodiments shown in the accompanying drawings, directional indications (such as up, down, left, right, front, and back) used to explain the structure and movement of various components of the present invention are not absolute but relative. These descriptions are applicable when these components are in the positions shown in the accompanying drawings. If the descriptions of the positions of these components are changed, these directional indications will also change accordingly.

[0038] The utility model provides a ship and a ventilation structure 2. The ship includes a hull 1 and a ventilation structure 2. The ventilation structure 2 is arranged on the plane where the deck 13 of the hull 1 is located, and is used to communicate with the cargo hold 11 in the hull 1 through the air duct 12, so as to facilitate the discharge of gas inside the cargo hold 11. The ventilation structure 2 of the present application has a first interface 2111, a second interface 2121 and a third interface 2131. The first interface 2111 is used to communicate with the air duct 12, and the second interface 2121 is used to be detachably connected to an external shore pipeline when the ship is docked, so that the gas in the cargo hold 11 can be discharged from the second interface 2121 through the shore pipeline into the odor treatment device on the shore for treatment. The third interface 2131 is used to be opened during normal operation of the ship, so that the gas in the cargo hold 11 can be directly discharged into the atmosphere from the third interface 2131. This application opens three interfaces on the connecting piece 21, so that the gas in the cargo hold 11 can be discharged from the second interface 2121 or the third interface 2131, which is convenient for the staff to connect and use, reduces the impact of the odor discharged from the cargo hold 11 on the shore staff when the ship docks, and meets the shore ventilation needs.

[0039] Figure 1 A schematic diagram of the partial structure of the ship is shown.

[0040] Combine Figure 1The ship of the present application includes a hull 1 and a ventilation structure 2. A cargo hold 11 and an air duct 12 are provided in the hull 1, and a deck 13 is provided on the top of the hull 1. An axial end opening of the air duct 12 is connected to the cargo hold 11, and an axial end opening of the air duct 12 extends upward to the deck 13. The ventilation structure 2 is arranged on the deck 13, and the ventilation structure 2 can be connected with the air duct 12 accordingly, so that the gas in the cargo hold 11 can be discharged along with the ventilation structure 2. In fact, the cargo hold 11 can also be replaced by other cabin spaces such as a passenger cabin. The air duct 12 can be a hole structure surrounded by pipes or entities, and a number of openings for communicating with the cargo hold 11 are provided at intervals on the side walls of the air duct 12.

[0041] Figure 2 A schematic structural diagram of the ventilation structure 2 is shown. Figure 3 A schematic structural diagram of the connecting piece 21 is shown.

[0042] Combine Figure 2 and Figure 3 The ventilation structure 2 includes a connecting piece 21, a connecting flange 22 and a blind plate 23.

[0043] The interior of the connecting piece 21 of the present application is hollow, and the connecting piece 21 includes a first tube head 211, a second tube head 212 and a third tube head 213. The first tube head 211, the second tube head 212 and the third tube head 213 are all hollow inside and have tubular structures with axial openings at both ends. The axial opening at one end of the first tube head 211, the axial opening at one end of the second tube head 212 and the axial opening at one end of the third tube head 213 are connected to each other. In another embodiment, the connecting piece 21 can also be a two-way pipe fitting with axial ends passing through, and a connecting opening is provided on the side wall of the two-way pipe fitting. The connecting piece 21 can also be a pipe fitting with closed axial ends, and three openings, namely a first interface 2111, a second interface 2121 and a third interface 2131, are provided on the side wall of the pipe fitting.

[0044] Furthermore, the first pipe head 211, the second pipe head 212, and the third pipe head 213 are integrally arranged, making it easier for workers to connect and install. The connecting piece 21 of the present application can be a three-way pipe connector, which is easier to obtain and reduces production costs. The connecting piece 21 can also be a multi-way pipe connector that is blocked to leave only three ports.

[0045] In addition, the first pipe head 211, the second pipe head 212, and the third pipe head 213 may all be separate structures, or in another embodiment, any two of the first pipe head 211, the second pipe head 212, and the third pipe head 213 may be integrated structures, and the other third pipe head may be separate from the integrated two structures, and they may be assembled with each other by means of flanges, bolts, etc. to form the connecting member 21. The diameters of the first pipe head 211, the second pipe head 212, and the third pipe head 213 may be the same or different.

[0046] The other axial end opening of the first pipe head 211 is a first interface 2111 , which is used to communicate with the air duct 12 . The gas in the cargo hold 11 can enter the interior of the connecting piece 21 after passing through the air duct 12 and the first interface 2111 .

[0047] The other axial end of the second pipe head 212 opens into a second port 2121. This port 2121 is used to connect to a blind plate 23 to close the second port 2121, or to connect to an external shore pipeline. When the second port 2121 is connected to the shore pipeline, gas within the cargo hold 11 can flow from the second port 2121 to the odor treatment device on shore through the connecting piece 21.

[0048] The other axial end of the third pipe head 213 is opened as a third port 2131. When the third port is opened, the gas in the cargo hold 11 can be discharged from the third port 2131 through the connecting piece 21.

[0049] Specifically, the second interface 2121 can be selectively connected to one of the blind plate 23 or the shore pipeline. When the ship is in normal operation, the third interface 2131 is opened, and the second interface 2121 is covered with the blind plate 23, so that the second interface 2121 is closed. At this time, the gas in the cargo hold 11 can be drawn out from the air duct 12 and the connecting piece 21 and finally discharged into the atmosphere from the third interface 2131; when the ship is at dock, the third interface 2131 is closed, the second interface 2121 and the blind plate 23 are disassembled and connected to the shore pipeline, so that the inside of the connecting piece 21 is connected to the shore pipeline. At this time, the gas in the cargo hold 11 can be drawn out from the air duct 12 and the connecting piece 21 and finally discharged into the atmosphere from the second interface 2121.

[0050] Furthermore, a connecting flange 22 is provided on the outer periphery of the second pipe head 212 corresponding to the second interface 2121. The connecting flange 22 is configured to be removably connected to a blind plate 23 or an external shore pipeline via bolts. The outer diameters of the blind plate 23 and the shore pipeline match the outer diameter of the second pipe head 212.

[0051] In this embodiment, the axial extension direction of the first pipe head 211 and the axial extension direction of the third pipe head 213 are coaxial. Specifically, the coaxial first pipe head 211 and the third pipe head 213 are connected to form an integrated pipe structure, which reduces space occupation. During operation of the vessel, gas can more smoothly pass through the first pipe head 211 and the third pipe head 213 in sequence before being discharged from the third port 2131. Alternatively, the axial extension directions of the first pipe head 211 and the third pipe head 213 may be staggered.

[0052] In this embodiment, the third pipe head 213 extends in the vertical direction, and the third joint is located at the top of the third pipe head 213 , which is convenient for the staff to adjust to open or close the third interface 2131 .

[0053] Likewise, the first pipe head 211 can be arranged vertically to reduce space occupation.

[0054] Furthermore, the axial extension direction of the second tube head 212 and the axial extension direction of the third tube head 213 are relatively perpendicular to each other. The axial extension direction of the first tube head 211 and the axial extension direction of the second tube head 212 are relatively perpendicular to each other.

[0055] In this embodiment, the second tube head 212 is perpendicular to the first tube head 211 and the third tube head 213, so that the second tube head 212 is staggered with the third tube head 213. In this embodiment, the first tube head 211 and the third tube head 213 are coaxially arranged vertically, and the second tube head 212 extends horizontally, so that the connecting piece 21 has a straight tee structure. Specifically, the first tube head 211 and the third tube head 213 have the same outer diameter and are coaxially arranged vertically. The third tube head 213 is arranged at the top of the first tube head 211. The second tube head 212 is connected between the first tube head 211 and the third tube head 213 and extends horizontally away from the first tube head 211 and the third tube head 213.

[0056] In addition, the first pipe head 211 , the second pipe head 212 , and the third pipe head 213 may be perpendicular to each other, so that the connecting piece 21 may have a three-dimensional tee structure.

[0057] In some other embodiments, the axial extension directions of the second tube head 212 and the third tube head 213 may be relatively inclined. The axial extension directions of the second tube head 212 and the first tube head 211 may also be relatively inclined, so that the connecting member 21 can be formed into a planar Y-shaped tee structure.

[0058] Figure 4 A schematic structural diagram of the vent hood 24 is shown.

[0059] Combine Figures 2 to 4 Furthermore, a vent cap 24 is provided on the third interface 2131, and the vent cap 24 is configured to open or close the third interface 2131. Specifically, the vent cap 24 is used to open the third interface 2131 when the ship is operating normally, and to close the third interface 2131 when the ship is docked.

[0060] The ventilation cap 24 of the present application is arranged on the top of the third pipe head 213 to facilitate the staff to control the opening or closing of the third interface 2131.

[0061] Furthermore, the ventilation cap 24 includes a support tube 241 , a sleeve cap 242 , an adjustment rod 243 and a sealing cover 244 .

[0062] The support tube 241 is a pipe structure with a through interior and two axially open ends. The support tube 241 is arranged on the top of the third pipe head 213 , and the interior of the support tube 241 is through-connected from top to bottom and communicates with the third port 2131 .

[0063] The cap 242 has an opening groove 2421 . The cap 242 is covered on the top of the support tube 241 with the opening groove 2421 facing downward. The inner bottom surface of the opening groove 2421 is spaced apart from the top of the support tube 241 , and the inner peripheral wall of the opening groove 2421 is spaced apart from the outer peripheral wall of the support tube 241 .

[0064] Support tube 241 is used to secure cap 242 to third tube head 213. Gaps are defined on the outer walls and tops of cap 242 and support tube 241, allowing air to pass through the interior of third tube head 213 and support tube 241 before exiting ventilation structure 2 through the gap between cap 242 and support tube 241. Cap 242 covers the top of support tube 241 through its open slots 2421, providing a shield for support tube 241 and preventing rainwater from flowing back and foreign matter from entering.

[0065] The adjustment rod 243 is rotatably mounted on the cap 242 and is rotatable relative to the cap 242. The top end of the adjustment rod 243 extends upward from the cap 242, while the bottom end of the adjustment rod 243 extends downward into the support tube 241. The adjustment rod 243 extends vertically, and a handwheel 245 may be provided at the top end of the adjustment rod 243 to facilitate operator control of the rotation of the adjustment rod 243 relative to the cap 242. The bottom end of the adjustment rod 243 can be placed and positioned on the support tube 241. The sealing cover 244 has a through hole at the bottom of the opening slot 2421. The upper portion of the adjustment rod 243 extends through the through hole, and the outer periphery of the lower portion of the adjustment rod 243 is provided with external threads.

[0066] The bottom end of the adjusting rod 243 is threadedly connected to a sealing cover 244 , which is slidably connected to the sleeve cap 242 in the up and down directions. By rotating the adjusting rod 243 , the sealing cover 244 can be driven to move up and down to open or close the upper end opening of the support tube 241 .

[0067] The sealing cover 244 is located between the opening slot 2421 and the support tube 241. The sealing cover 244 is slidably connected to the sleeve cap 242 in the vertical direction. The adjustment rod 243 can rotate to drive the sealing cover 244 to move up and down along the axis of the adjustment rod 243 to open or close the upper opening of the support tube 241. Specifically, the sealing cover 244 and the sleeve cap 242 can achieve a sliding connection through the cooperation of a protrusion groove, or through the cooperation of a guide rod and a hole, to prevent the sealing cover 244 from rotating with the rotation of the adjustment rod 243. The outer circumference of the sealing cover 244 matches the inner diameter of the upper opening of the support tube 241, ensuring that the sealing cover 244 can seal the upper opening of the support tube 241. The support tube 241 is connected to the third interface 2131 of the third tube head 213, and the interior of the support tube 241 is communicated with the interior of the third tube head 213. When the sealing cover 244 closes the upper opening of the support tube 241, the third interface 2131 of the third tube head 213 is closed. When the sealing cover 244 opens the upper opening of the support tube 241, the third joint of the third tube head 213 is opened.

[0068] Furthermore, the support tube 241 is connected to the third interface 2131 of the third tube head 213 by a flange. In addition, the support tube 241 can also be provided integrally with the third tube head 213.

[0069] Furthermore, the ventilation structure 2 further includes a base tube 26 and a mounting tube 25 which are connected in sequence.

[0070] The base pipe 26 is disposed on the deck 13 and communicates with the air duct 12. The mounting pipe 25 is communicated between the base pipe 26 and the first interface 2111 of the communication member 21.

[0071] Specifically, the first pipe head 211, the mounting pipe 25, and the base pipe 26 are connected in sequence from top to bottom and are coaxially arranged. The bottom end of the base pipe 26 is mounted on the deck 13 and communicates with the air duct 12 below the deck 13, providing communication with the cargo hold 11 through the air duct 12. A fan 27 is housed within the mounting pipe 25 and is configured to control airflow from the air duct 12 toward the interior of the connecting member 21, thereby improving air flow efficiency. Support ribs are provided between the outer periphery of the base pipe 26 and the surface of the deck 13 to enhance the overall installation stability of the ventilation structure 2.

[0072] Furthermore, flange connections are used between the first interface 2111 of the connecting member 21 and the mounting tube 25, and between the mounting tube 25 and the base tube 26, to facilitate transportation and installation of the fan 27 in the mounting tube 25. In addition, the mounting tube 25 and the base tube 26 can also be an integrally formed structure.

[0073] In some other embodiments, the connecting member 21 may be directly disposed on the deck 13. Specifically, the first interface 2111 of the first pipe head 211 of the connecting member 21 is connected to the deck 13 and is directly connected to the air duct 12.

[0074] The present application provides a vessel comprising the aforementioned ventilation structure 2 and a hull 1. The hull 1 is provided with a cargo hold 11 and an air duct 12, and a deck 13 is located on top of the hull 1. The ventilation structure 2 is located on the deck 13, and the cargo hold 11, air duct 12, base pipe 26, mounting pipe 25, and connecting piece 21 are sequentially connected. When the vessel is docked, the sealing cover 244 of the ventilation cap 24 closes the third port 2131, opens the second port 2121, and connects to the shore pipeline. Gas within the cargo hold 11 can be discharged sequentially through the air duct 12, base pipe 26, mounting pipe 25, first pipe head 211, and second port 2121 of the second pipe head 212. Or when the ship is sailing, the blind plate 23 closes the second interface 2121, and the sealing cover 244 of the ventilating cap 24 opens the second interface 2121, and the gas in the cargo hold 11 can be discharged from the air duct 12, the base pipe 26, the mounting pipe 25, the first pipe head 211, and the third interface 2131 of the third pipe head 213 in sequence.

[0075] While the present invention has been described with reference to several exemplary embodiments, it should be understood that the terms used are illustrative and exemplary rather than restrictive. Since the present invention can be embodied in a variety of forms without departing from the spirit or essence of the invention, it should be understood that the above-described embodiments are not limited to any of the foregoing details, but should be interpreted broadly within the spirit and scope of the appended claims. Therefore, all changes and modifications that fall within the scope of the claims or their equivalents are intended to be covered by the appended claims.

Claims

1. A ventilation structure, characterized in that: include: A connecting piece having a hollow interior; the connecting piece is provided with a first interface, a second interface, and a third interface communicating with the interior; the first interface is used to communicate with the air duct; a connecting flange, provided at the second interface; the connecting flange being configured to be detachably connected to an external shore pipeline; a blind plate configured to be detachably connected to the connecting flange and used to close the second interface; A vent cap is provided at the third interface, and the vent cap is configured to open or close the third interface; wherein: The third interface is opened on the ventilation cap, and the blind plate is connected to the connecting flange and closes the second interface; When the ventilation hood closes the third interface, the connecting flange is connected to the shore pipeline to communicate with the second interface.

2. The ventilation structure according to claim 1, characterized in that: The connecting piece includes a first tube head, a second tube head, and a third tube head. An axial opening of the first tube head, an axial opening of the second tube head, and an axial opening of the third tube head are connected to each other; the other axial opening of the first tube head is the first interface; the other axial opening of the second tube head is the second interface; and the other axial opening of the third tube head is the third interface. The third pipe head extends in a vertical direction, and the third interface is located at the top of the third pipe head.

3. The ventilation structure according to claim 2, characterized in that: The axial extension direction of the first tube head and the axial extension direction of the third tube head are staggered or coaxial with each other.

4. The ventilation structure according to claim 2, characterized in that: The axial extension direction of the second tube head and the axial extension direction of the third tube head are relatively inclined or relatively vertical; The axial extension direction of the first tube head and the axial extension direction of the second tube head are relatively inclined or relatively vertical.

5. The ventilation structure according to claim 2, characterized in that: The first pipe head, the second pipe head and the third pipe head are integrally provided.

6. The ventilation structure according to claim 2, characterized in that: The vent cap includes a support tube, a sleeve cap, an adjustment rod and a sealing cover; The support tube is arranged on the top of the third tube head, and the interior of the support tube is connected from top to bottom and communicates with the third interface; The cap has an open groove, the cap cover is arranged on the top of the support tube with the open groove facing downward, the inner bottom surface of the open groove is spaced from the top of the support tube, and the inner peripheral wall of the open groove is spaced from the outer peripheral wall of the support tube; The adjusting rod is arranged on the sleeve cap, the top end of the adjusting rod extends upward from the sleeve cap, and the bottom end of the adjusting rod extends downward into the support tube; The sealing cover is located between the opening groove and the support tube, the sealing cover is threadedly connected to the adjusting rod, the sealing cover is slidably connected to the sleeve cap along the up and down directions, and the adjusting rod can rotate to drive the sealing cover to move up and down along the axial direction of the adjusting rod to open or close the upper end opening of the support tube.

7. The ventilation structure according to claim 1, characterized in that: The ventilation structure also includes a base tube and a mounting tube connected in sequence; The base pipe is arranged on the deck and is in communication with the air duct; The mounting tube is connected between the base tube and the first interface of the connecting piece; a fan is provided in the mounting tube, and the fan is configured to control the airflow from the air duct to the inside of the connecting piece.

8. The ventilation structure according to claim 7, characterized in that: Flange connections are adopted between the first interface of the connecting piece and the mounting pipe, and between the mounting pipe and the base pipe.

9. A ship, characterized in that: include: The ventilation structure according to any one of claims 1 to 8; A hull, wherein a cargo hold and an air duct are provided inside the hull, and a deck is provided on the top of the hull; an axial end opening of the air duct is connected to the cargo hold, and the other axial end opening of the air duct extends upward to the deck, and the first interface of the connecting piece is correspondingly connected to the air duct.

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