Gas guiding device and washing tower

Abstract

The utility model belongs to the technical field of ship waste gas purification, and discloses a gas guiding device and a washing tower. The device comprises an upper cone component and a lower cone component, the upper cone component and the lower cone component are in butt joint to form a diamond shape, a fixing plate is installed on the outer edge of the upper cone component, the fixing plate is annular and is provided with a first through hole, at least two sets of butt joint plates are installed on the lower side of the fixing plate, the butt joint plates are arc-shaped, the butt joint plates are spliced end to end to form a circle, and second through holes are formed in the butt joint plates. The bolt penetrates through the first through hole and the second through hole and then is screwed with a nut; the section of the butt-joint plate is L-shaped; the problems that in the prior art, a gas flow guiding device needs to be replaced in shore for maintenance, consumed time is long, and cost is high are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of ship exhaust gas purification, in particular to a gas diversion device and a scrubber. Background Art

[0002] During the operation of a marine diesel engine, a large amount of exhaust gas is generated. In order to reduce environmental pollution, the exhaust gas generated by the ship is treated through a scrubber. Usually, the exhaust gas enters the scrubber from the lower side of the scrubber, and the washing water is sprayed from the upper side of the scrubber, so that the exhaust gas and the washing water are in reverse contact, adsorbing harmful substances in the exhaust gas and making the exhaust gas meet the emission standards.

[0003] A gas diversion device is installed above the air inlet at the bottom of the scrubber, which can make the exhaust gas smoothly enter along the gap between the outer side of the gas diversion device and the scrubber wall, enabling the exhaust gas entering the scrubber to rise smoothly, reducing the pressure drop. At the same time, the gas diversion device can block the washing water sprayed from above, preventing the washing water from entering the flue of the exhaust gas at the lower side of the scrubber.

[0004] In the prior art, during the navigation of the ship after leaving the port, the ship will shake, causing the scrubber to be in an inclined state. Due to the small size of the gas diversion device, the washing water falling vertically from above will enter the exhaust gas flue at this time, resulting in engine damage; if the size of the gas diversion device is increased, the pressure drop inside the scrubber will be too large, reducing the scrubbing ability of the scrubber for exhaust gas. Since the gas diversion device is an integrated structure, it is necessary to directly replace the gas diversion device with a suitable diameter to enable the gas diversion device to simultaneously meet the ability to block the washing water and maintain the pressure drop of the scrubber. However, the gas diversion device is made of super duplex stainless steel and super austenitic stainless steel, and the crew does not have the welding qualification for the corresponding materials, and can only be repaired after the ship docks. The repair cost is high and the time consumption is long. If flammable and explosive goods are carried, there cannot be an open flame on the ship, and the gas diversion device cannot be repaired, resulting in problems such as engine damage or unqualified exhaust gas treatment capacity. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a gas diversion device and a scrubber, which solve the problem that replacing the gas diversion device in the prior art requires shore-based maintenance, with high time consumption and high cost.

[0006] To achieve this purpose, the present utility model adopts the following technical solutions: The present utility model provides a gas diversion device, including an upper cone member and a lower cone member. The upper cone member and the lower cone member are butted to form a diamond shape. An fixing plate is installed on the outer edge of the upper cone member. The fixing plate is annular. The fixing plate is provided with a first through hole. At least two groups of docking plates are installed on the lower side of the fixing plate. The docking plates are arc-shaped. The docking plates are spliced end to end to form a circle. The docking plates are provided with second through holes. Bolts pass through the first through hole and the second through hole and are then screwed with nuts. The cross section of the docking plate is L-shaped.

[0007] Preferably, the second through hole is in an elongated waist shape. The length direction of the second through hole is arc-shaped. The length direction of the second through hole is parallel to the outer edge of the docking plate.

[0008] Preferably, there are multiple groups of the docking plates. The docking plates are connected end to end to form a circle. Each group of the docking plates is provided with multiple groups of second through holes. The second through holes correspond to the first through holes one by one.

[0009] Preferably, the fixing plate is welded to the outer edge of the upper cone member.

[0010] Preferably, the lower cone member includes a conical tube portion and a vertical tube portion. The vertical tube portion is cylindrical. The vertical tube portion is welded to the lower bottom surface of the upper cone member. The conical tube portion is conical. The lower bottom surface of the conical tube portion contacts the waste gas.

[0011] Preferably, a lifting lug is installed at the top end of the upper cone member. A lifting hole is provided on the lifting lug.

[0012] Preferably, the lifting lug is welded to the top of the upper cone member.

[0013] Preferably, a lead-out hole is provided on the surface of the upper cone member. A guiding tube is inserted into the lead-out hole. The guiding tube communicates with the outside.

[0014] A scrubbing tower includes the above-mentioned gas diversion device, and further includes a tower wall. The gas diversion device is installed inside the tower wall. A pull rod is welded on the tower wall. The other end of the pull rod is welded to the upper side of the upper cone member.

[0015] Beneficial effects: When problems such as an increase in pressure drop or backflow of washing water into the exhaust gas flue occur during the navigation of the ship by the gas diversion device, by loosening the nuts, the docking plate can be removed from the fixing plate. Moreover, the docking plate is divided into multiple groups. After being disassembled separately, the individual volume becomes smaller, facilitating removal from inside the tower wall. This makes it convenient for the disassembly and assembly personnel to install docking plates of different sizes onto the fixing plate. If the problem of increased pressure drop occurs, replace the docking plate to make the size of the gas diversion device smaller; if the problem of backflow of washing water occurs, replace the docking plate to make the size of the gas diversion device larger. The crew can adjust the size of the gas diversion device without docking, saving time and reducing maintenance costs. Description of the Drawings

[0016] Figure 1 is a cross-sectional view of the scrubbing tower of the present utility model;

[0017] Figure 2 is a partially enlarged cross-sectional view of the docking plate of the present utility model;

[0018] Figure 3 is a top view of the docking plate of the present utility model;

[0019] Figure 4 is a cross-sectional view of the docking plate of the present utility model.

[0020] In the figure: 1. Upper cone member; 11. Fixing plate; 2. Lower cone member; 21. Vertical pipe part; 22. Conical pipe part; 3. Docking plate; 31. Second through hole; 32. Horizontal plate part; 33. Vertical plate part; 4. Bolt; 5. Nut; 6. Lifting lug; 61. Lifting hole; 7. Discharge hole; 8. Tie rod; 9. Tower wall; 10. Exhaust gas flue. Detailed Embodiment

[0021] The present utility model will be further described in detail below with reference to the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present utility model, rather than limiting the present utility model. Additionally, it should be noted that for the sake of description, only parts related to the present utility model are shown in the drawings, rather than all the structures.

[0022] In the description of the present utility model, unless otherwise clearly defined and limited, the terms "connected", "connected to", and "fixed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0023] In the present utility model, unless otherwise clearly specified and defined, the first feature being "above" or "below" the second feature may include direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "beneath" and "underneath" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the horizontal height of the first feature is lower than that of the second feature.

[0024] In the description of this embodiment, the orientation or positional relationships such as "above", "below", "right", etc. are based on the orientation or positional relationships shown in the drawings. It is only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0025] Under the prior art, the size of the gas diversion device cannot be changed. Before the ship is launched, the gas diversion device has been welded to the tower wall. When the inclination angle of the ship is too large during navigation, the tower wall will tilt, and the vertically falling washing water may enter the exhaust gas flue. If the diameter of the gas diversion device is increased, the pressure drop will increase, increasing the back pressure of the diesel engine. In this case, it is necessary to adjust the diameter of the gas diversion device according to different ship navigation conditions. Since the crew cannot perform welding operations, the ship can only be repaired after docking, which will result in higher maintenance costs and longer maintenance cycles. At the same time, if the ship is carrying flammable and explosive items, the gas diversion device cannot be replaced, resulting in the inability to replace the gas diversion device during ship navigation, shortening the life of the diesel engine, and at the same time causing the gases discharged from the ship to not be effectively purified.

[0026] To solve the above problems, as Figures 1 to 4 shown, the present utility model provides a gas diversion device, which includes an upper cone member 1 and a lower cone member 2. The upper cone member 1 and the lower cone member 2 are butted to form a diamond shape. A fixing plate 11 is welded to the outer edge of the upper cone member 1. The fixing plate 11 is annular. The fixing plate 11 is provided with a first through hole. At least two groups of docking plates 3 are installed on the lower side of the fixing plate 11. The docking plates 3 are arc-shaped. The docking plates 3 are spliced end to end to form a circle. The docking plates 3 are provided with second through holes 31. Bolts 4 pass through the first through holes and the second through holes 31 and are screwed with nuts 5. The cross section of the docking plate 3 is L-shaped. The docking plate 3 includes a horizontal plate portion 32 and a vertical plate portion 33 that are vertically connected. Two groups of nuts are screwed on each bolt, so that the docking plate 3 can be firmly fixed on the fixing plate 11.

[0027] AsFigure 1 As shown, the arrow on the upper side represents the washing water, and the arrow on the lower side represents the exhaust gas. The washing water drops onto the plane of the upper cone member 1, guiding the washing water to the gap between the tower wall 9 and the gas guiding device, avoiding directly falling into the exhaust gas outlet directly below. After the exhaust gas is discharged, it will directly impact on the lower cone member 2. When the actual exhaust gas rises upward, it can rise smoothly, reducing the rising speed, enabling the exhaust gas to fully contact the washing water, and reducing the pollution value of the exhaust gas.

[0028] If the washing water drops into the exhaust gas outlet when the ship is in a tilted state, then remove the docking plate 3 and replace it with a docking plate 3 with a larger cross-sectional shape, increasing the lengths of the horizontal plate portion 32 and the vertical plate portion 33; if the pressure drop is too large, then replace it with a docking plate 3 of a smaller size, shortening the lengths of the horizontal plate portion 32 and the vertical plate portion 33. By repeatedly replacing the docking plate 3, the gas guiding device can meet both the stable operation condition and the condition of the ship's swaying. Only by removing the nut 5 on the bolt 4 can the docking plate 3 be removed, which is convenient for the crew to operate, without waiting for the ship to dock, can reduce costs. The ship carries docking plates 3 of different sizes during navigation, and the size of the docking plate 3 can be flexibly adjusted according to different navigation situations. At the same time, there will be no open fire during the replacement process. Therefore, even if the ship transports flammable and explosive items, it can be replaced smoothly, improving safety, extending the life of the diesel engine, and at the same time enabling the exhaust gas discharged by the ship to meet the navigation standards.

[0029] The second through-hole 31 of the present utility model is in an elongated waist shape, the length direction of the second through-hole 31 is arc-shaped, and the length direction of the second through-hole 31 is parallel to the outer edge of the docking plate 3. By setting the second through-hole 31 in an elongated waist shape, the area of the second through-hole 31 is increased, making the error tolerance higher when the docking plate 3 cooperates with the fixing plate 11, making it easier for the bolt 4 to pass through the first through-hole and the second through-hole 31, facilitating the crew to fix the docking plate 3 on the fixing plate 11 in a narrow space, improving the installation efficiency and reducing the installation difficulty.

[0030] The docking plate 3 of the present utility model includes multiple groups, the docking plates 3 are connected end to end to form a circle, and multiple groups of second through-holes 31 are provided on each group of docking plates 3, and the second through-holes 31 correspond to the first through-holes one by one.

[0031] Dividing the docking plate 3 facilitates the crew to install and disassemble it, reduces the volume of each docking plate 3, and is convenient for the crew to perform replacement operations in a narrow inspection hole.

[0032] The lower cone member 2 includes a conical tube portion 22 and a vertical tube portion 21. The vertical tube portion 21 is cylindrical, the vertical tube portion 21 is welded to the lower bottom surface of the upper cone member 1, the conical tube portion 22 is conical, the lower bottom surface of the conical tube portion 22 contacts the exhaust gas, and the conical tube portion 22 can guide the exhaust gas in all directions, making the exhaust gas more evenly distributed in the scrubber tower.

[0033] The top end of the upper cone member 1 is welded with a lifting lug 6, and a lifting hole 61 is provided on the lifting lug 6. By providing the lifting hole 61, when installing the gas diversion device, the gas diversion device can be lifted by hooking a lifting hook into the lifting hole 61, which is convenient for installation inside the tower wall 9.

[0034] The surface of the upper cone member 1 is provided with a lead-out hole 7, and a guide pipe is inserted into the lead-out hole 7. The guide pipe communicates with the outside. Since the waste gas has a relatively high temperature, after the waste gas contacts the gas diversion device, the temperature of the gas diversion device will increase, causing the gas inside the gas diversion device to expand. The expanded gas can be discharged outwards along the guide pipe, reducing the pressure inside the gas diversion device, ensuring the interface quality of the weld between the upper cone member 1 and the lower cone member 2, and making the gas diversion device more reliable.

[0035] The present utility model also provides a scrubbing tower, which includes a gas diversion device and also includes a tower wall 9. The gas diversion device is installed inside the tower wall 9. A pull rod 8 is welded on the tower wall 9, and the other end of the pull rod 8 is welded on the upper side of the upper cone member 1. The gas diversion device is fixed in the middle of the tower wall 9 through the pull rod 8. The lower side of the tower wall 9 is an exhaust gas flue 10, and the exhaust gas is discharged from the inside.

[0036] Obviously, the above-mentioned embodiments of the present utility model are merely examples for clearly explaining the present utility model, rather than limiting the implementation manners of the present utility model. For those of ordinary skill in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the protection scope of the present utility model. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present utility model shall be included within the protection scope of the claims of the present utility model.

Claims

1. A gas diversion device, characterized in that, It includes an upper cone member (1) and a lower cone member (2). The upper cone member (1) and the lower cone member (2) are butt-jointed in a diamond shape. A fixed plate (11) is installed on the outer edge of the upper cone member (1). The fixed plate (11) is annular. The fixed plate (11) is provided with a first through hole. At least two groups of docking plates (3) are installed on the lower side of the fixed plate (11). The docking plates (3) are arc-shaped. The docking plates (3) are spliced end to end to form a circle. A second through hole (31) is opened on the docking plate (3). After a bolt (4) passes through the first through hole and the second through hole (31), a nut (5) is screwed. The cross section of the docking plate (3) is L-shaped.

2. The gas flow guiding device according to claim 1, characterized in that, The second through hole (31) is in an oblong shape. The length direction of the second through hole (31) is arc-shaped. The length direction of the second through hole (31) is parallel to the outer edge of the docking plate (3).

3. The gas diversion device according to claim 1, characterized in that, The docking plates (3) include multiple groups. The docking plates (3) are connected end to end to form a circle. Multiple groups of second through holes (31) are opened on each group of docking plates (3). The second through holes (31) correspond to the first through holes one by one.

4. The gas flow guiding device according to claim 1, wherein The fixed plate (11) is welded to the outer edge of the upper cone member (1).

5. The gas diversion device according to claim 1, characterized in that, The lower cone member (2) includes a conical pipe part (22) and a vertical pipe part (21). The vertical pipe part (21) is cylindrical. The vertical pipe part (21) is welded to the lower bottom surface of the upper cone member (1). The conical pipe part (22) is conical. The lower bottom surface of the conical pipe part (22) is in contact with the waste gas.

6. The gas flow guiding device according to claim 1, wherein, A lifting lug (6) is installed at the top of the upper cone member (1). A lifting hole (61) is opened on the lifting lug (6).

7. The gas flow guiding device according to claim 6, wherein The lifting lug (6) is welded to the top of the upper cone member (1).

8. The gas diversion device according to claim 1, characterized in that A lead-out hole (7) is opened on the surface of the upper cone member (1). A guide pipe is inserted into the lead-out hole (7). The guide pipe is communicated with the outside.

9. A scrubbing tower, characterized in that, It includes the gas diversion device described in claim 1, and further includes a tower wall (9). The gas diversion device is installed inside the tower wall (9). A pull rod (8) is welded on the tower wall (9). The other end of the pull rod (8) is welded to the upper side of the upper cone member (1).

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