Vertical exhaust structure for ship

Abstract

The utility model provides a kind of marine vertical exhaust structure, it is specifically related to shipbuilding technical field.The vertical exhaust structure includes vertical fan and shunt air bellow movably arranged at the bottom of vertical fan;The shunt air bellow is the four-prism platform structure with top opening, and the air bellow bottom plate of the shunt air bellow is symmetrically provided with several air holes;Each air hole bottom is provided with a shunt passage;Each shunt passage is equipped with an independent air control component;The bottom of the shunt passage is communicated with the cabin to be exhausted by spiral air pipe or PVC ventilation pipe.The utility model adds the shunt air bellow structure of shunt independent control at the bottom of existing marine vertical fan, and each shunt air bellow bottom shunt passage is equipped with an independent air control component, can according to cabin construction sequence, independently control the exhaust of each cabin or the exhaust of all cabins simultaneously, reduces 83% of the input of independent exhaust fan on the basis of not reducing cabin exhaust effect, and greatly reduces the production input cost.

Description

Technical Field

[0001] This utility model relates to the field of shipbuilding and repair technology, specifically to a shipborne vertical ventilation structure. Background Technology

[0002] For a long time, in the construction and repair of sealed compartments on the sides of container ships, LNG ships and other types of ships, since these sealed compartments are mostly located below the second deck, the number of sealed compartments is 2 to 3 times that of bulk carriers of the same deadweight tonnage. In order to accelerate the air replacement of sealed compartments and improve the construction working environment, the solution of equipping each compartment with an exhaust fan is often adopted, which leads to a multiple increase in the number of exhaust fans used on site, greatly increasing production costs.

[0003] In addition, due to the limitations of container and LNG ships, the main deck area is small and equipment storage is difficult. Ventilation fans are generally arranged in the cargo hold or dock area. At the same time, temporary process holes need to be opened in the original ship outer plate or longitudinal wall to lay ventilation pipes. This has resulted in a doubling of the number of temporary process holes, a significant increase in the amount of ventilation pipes used, and a large amount of labor required to reinstall the process holes after the completion of the engineering construction in the sealed compartment.

[0004] In order to improve the construction efficiency of ballast tank repair projects for container ships and LNG ships, improve the working environment of workers, ensure construction safety, and reduce production costs, this utility model provides a marine vertical ventilation structure. Utility Model Content

[0005] To overcome the shortcomings of the prior art, this utility model provides a marine vertical ventilation structure, the specific technical solution of which is as follows: A marine vertical ventilation structure includes a vertical fan and a branching air box movably installed at the bottom of the vertical fan corresponding to the ventilation inlet position; the branching air box is a truncated pyramid structure with an open top, and the bottom plate of the branching air box has a plurality of air holes symmetrically opened; each air hole has a branching channel at its bottom; each branching channel is equipped with an independent air control component; the bottom of the branching channel is connected to the compartment to be ventilated through a spiral air duct or a PVC ventilation pipe.

[0006] Preferably, the bottom edge of the vertical fan is provided with a first connecting flange, and the top edge of the branch air box is provided with a second connecting flange; the first connecting flange and the second connecting flange are fastened together with bolts.

[0007] Preferably, a rubber sealing gasket is also provided between the first connecting flange and the second connecting flange.

[0008] Preferably, the independent air control assembly includes an air damper and a hand crank; the air damper is rotatably disposed in the inner cavity of the air distribution channel, and the hand crank is disposed on the outer side of the air distribution channel corresponding to the air damper; one end of the air damper is connected to the hand crank via a connecting rod, and the other end is rotatably connected to the side wall of the air distribution channel, and the rotation angle of the air damper in the inner cavity of the air distribution channel is adjusted by the hand crank to realize the blocking or opening of the air distribution channel.

[0009] Preferably, the outer diameter of the damper is adapted to the inner diameter of the air distribution channel.

[0010] Preferably, the top of the first connecting flange and the bottom of the second connecting flange are provided with a plurality of reinforcing elbows at equal intervals along the circumference.

[0011] Preferably, the top of the bottom plate of the air box is provided with a number of longitudinal reinforcing ribs at equal intervals along its length, avoiding the position of the air hole; the two ends of the longitudinal reinforcing ribs are fixedly connected to the front and rear inner side walls of the branch air box.

[0012] More preferably, the top of the bottom plate of the air box is provided with several transverse reinforcing ribs at equal intervals along its width, avoiding the position of the air hole; the two ends of the transverse reinforcing ribs are fixedly connected to the left and right inner side walls of the branch air box.

[0013] Furthermore, preferably, the manhole cover and pipeline inlet of the vertical fan are sealed with aluminum foil tape.

[0014] More preferably, the branching air box is made of steel plate with a thickness of 8mm.

[0015] The beneficial effects of this utility model are: This invention utilizes the existing marine vertical fan structure and adds a branch air box structure at its bottom that can be independently controlled. Each branch air box is equipped with an independent air control component at the bottom of its air distribution channel. It can control the ventilation of each compartment individually or all compartments simultaneously according to the construction sequence of the compartments. Without reducing the ventilation effect of the compartments, it reduces the investment of independent exhaust fans by 83%, which greatly reduces the production input cost. Attached Figure Description

[0016] The accompanying drawings constituting this utility model are provided to further understand this application and do not constitute an undue limitation on this application.

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 for Figure 1 Side view; Figure 3 for Figure 1 Sectional view at point AA; Figure 4 for Figure 1 Cross-sectional view of the first connecting flange of BB; Figure 5 is Figure 3 Sectional view at CC; Figure 6 for Figure 3 Sectional view at point DD; Figure 7 for Figure 6 A magnified view of a section at point A in the middle; In the diagram, 1-vertical fan; 2-branching air box; 3-air distribution duct; 301-air damper; 302-hand crank; 4-first connecting flange; 5-air box base plate; 501-air hole; 6-transverse reinforcing rib; 7-longitudinal reinforcing rib; 8-rubber sealing gasket; 9-bolt; 10-reinforcing elbow plate; 11-spiral duct; 12-PVC ventilation pipe. Detailed Implementation

[0018] The specific implementation of the marine vertical ventilation structure provided by this utility model will be further described with reference to the accompanying drawings and embodiments.

[0019] like Figures 1-2 As shown, a marine vertical ventilation structure includes a vertical fan 1 (an existing device is known, and its specific internal structure will not be described in detail here) and a branch air box 2 movably disposed at the bottom of the vertical fan 1 corresponding to the ventilation inlet. Specifically, the branch air box 2 is a truncated pyramid structure with an open top, the size of which is adapted to the bottom size of the vertical fan 1. For ease of installation, a first connecting flange 4 is provided at the bottom edge of the vertical fan 1 (e.g., ...). Figure 4 As shown in the diagram, a second connecting flange is provided on the top edge of the branching air box 2; the first connecting flange 4 and the second connecting flange are fastened together by bolts 9. Preferably, the branching air box is made of steel plate with a thickness of 8mm.

[0020] It is worth noting that, in order to ensure the overall sealing performance of the vertical fan 1, a rubber sealing gasket 8 is provided between the first connecting flange 4 and the second connecting flange; the edges of the manhole cover and pipeline inlet (not shown in the figure) of the vertical fan 1 are sealed with aluminum foil tape.

[0021] Preferably, the bottom plate 5 of the branch air box 2 is symmetrically provided with a plurality of air holes 501, such as... Figure 3 As shown; each of the air vents 501 has an air distribution channel 3 at its bottom.

[0022] Preferably, in order to achieve independent air extraction function for each air distribution channel 3, each air distribution channel 3 in this invention is equipped with an independent air control component. Specifically, such as... Figures 5-6As shown, the independent air control assembly includes a damper 301 and a hand crank 302. The damper 301 is rotatably mounted within the inner cavity of the air distribution channel 3, while the hand crank 302 is positioned on the outer side of the air distribution channel 3 corresponding to the installation position of the damper 301. One end of the damper 301 is connected to the hand crank 302 via a connecting rod (not shown in the figure), and the other end is rotatably connected to the side wall of the air distribution channel 3. In use, the operator can adjust the rotation angle of the damper 301 within the inner cavity of the air distribution channel 3 using the hand crank 302, thereby controlling the amount of air drawn through the damper 301.

[0023] It is worth noting that the outer diameter of the damper 301 is matched with the inner diameter of the air distribution channel 3, ensuring that the damper 301 can better fit the inner wall of the air distribution channel 3 when closed, thereby improving the sealing effect.

[0024] like Figure 7 As shown, the top of the first connecting flange 4 and the bottom of the second connecting flange are provided with several reinforcing elbow plates 10 at equal intervals along the circumference to ensure the strength of the flange connection between the vertical fan 1 and the branch air box 2 and to prevent deformation.

[0025] To ensure that the bottom plate 5 of the branch air box 2 does not deform during operation of the exhaust fan, a number of longitudinal reinforcing ribs 7 are evenly spaced along the length of the top of the bottom plate 5, avoiding the air holes 501. Both ends of each longitudinal reinforcing rib 7 are fixedly connected to the front and rear inner sidewalls of the branch air box 2. A number of transverse reinforcing ribs 6 are also evenly spaced along the width of the top of the bottom plate 5, avoiding the air holes 501. Both ends of each transverse reinforcing rib 6 are fixedly connected to the left and right inner sidewalls of the branch air box 2.

[0026] In order to reduce the number of ventilation pipes in the corridor and facilitate the transfer of materials and evacuation of personnel, in order to reduce the number of ventilation pipes in the corridor and facilitate the transfer of materials and evacuation of personnel, the air distribution channel 3 of the compartments far from the vertical fan 1 is first connected to the PVC ventilation pipe 12 laid under the main deck, and then the spiral air duct 11 is used to introduce the air into the compartments until it reaches the manhole of the compartment; while in the compartments closer to the vertical fan 1, the air distribution channel 3 can be directly introduced into the compartments through the spiral air duct 11.

[0027] The following explanation, based on actual test results, further illustrates the ventilation effect of this invention: Based on a 9000TEU container ship, this type of vessel typically has around twenty enclosed side compartments. If all compartments require simultaneous construction, at least twenty vertical fans are needed. However, using the marine vertical ventilation structure proposed in this invention, with each vertical fan having six air vents in its branch air box, only four fans are required to meet the ventilation requirements. Assuming each vertical fan consumes 11KW per hour and is used for approximately 10 hours per day on average, the ventilation structure provided by this invention can save approximately 1060 kWh of electricity per day, significantly reducing production costs for enterprises.

[0028] In this utility model, terms such as "upper," "lower," "bottom," and "top" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are merely used to facilitate the description of the structural relationships of the various components or elements of this utility model and do not specifically refer to any part or element of this utility model; they should not be construed as limiting this utility model. Terms such as "connected" and "linked" should be interpreted broadly, indicating a fixed connection, an integral connection, or a detachable connection; a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in this utility model can be determined according to the specific circumstances, and they should not be construed as limiting this utility model.

[0029] Of course, the above description is not intended to limit the present utility model, and the present utility model is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present utility model should also fall within the protection scope of the present utility model.

Claims

1. A marine vertical ventilation structure, characterized in that, Includes a vertical fan and a branch air box that is movable at the bottom of the vertical fan corresponding to the air inlet position; The branching air box is a truncated pyramid structure with an open top. The bottom plate of the branching air box has several air holes symmetrically opened. Each air hole has an air distribution channel at its bottom. Each air distribution channel is equipped with an independent air control component. The bottom of the air distribution channel is connected to the chamber to be ventilated via a spiral duct or PVC ventilation pipe.

2. The marine vertical ventilation structure according to claim 1, characterized in that, The vertical fan has a first connecting flange at its bottom edge, and the branch air box has a second connecting flange at its top edge; the first connecting flange and the second connecting flange are fastened together with bolts.

3. The marine vertical ventilation structure according to claim 2, characterized in that, A rubber sealing gasket is also provided between the first connecting flange and the second connecting flange.

4. The marine vertical ventilation structure according to claim 1, characterized in that, The independent air control assembly includes an air damper and a hand crank; the air damper is rotatably disposed in the inner cavity of the air distribution channel, and the hand crank is disposed on the outer side of the air distribution channel corresponding to the air damper. One end of the damper is connected to a hand crank via a connecting rod, and the other end is rotatably connected to the side wall of the air distribution channel. The rotation angle of the damper in the inner cavity of the air distribution channel can be adjusted by the hand crank to block or open the air distribution channel.

5. The marine vertical ventilation structure according to claim 4, characterized in that, The outer diameter of the damper is matched with the inner diameter of the air distribution channel.

6. The marine vertical ventilation structure according to claim 3, characterized in that, The top of the first connecting flange and the bottom of the second connecting flange are provided with several reinforcing elbows at equal intervals along the circumference.

7. The marine vertical ventilation structure according to claim 1, characterized in that, The top of the bottom plate of the air box is provided with several longitudinal reinforcing ribs at equal intervals along its length, avoiding the position of the air hole; the two ends of the longitudinal reinforcing ribs are fixedly connected to the front and rear inner side walls of the branch air box.

8. The marine vertical ventilation structure according to claim 7, characterized in that, The top of the bottom plate of the air box is provided with several transverse reinforcing ribs at equal intervals along its width, avoiding the position of the air hole; the two ends of the transverse reinforcing ribs are fixedly connected to the left and right inner side walls of the branch air box.

9. The marine vertical ventilation structure according to claim 1, characterized in that, The manhole cover and pipeline access hole edges of the vertical fan are sealed with aluminum foil tape.

10. The marine vertical ventilation structure according to claim 1, characterized in that, The branch air box is made of steel plate with a thickness of 8mm.

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