Flow guide for ship desulfurization system

Abstract

The application discloses a ship desulfurization system flow guide device, comprising: a discharge pipe, a first flow guide and a second flow guide. The first flow guide is annular, arranged in the discharge pipe and located between the water inlet and the water outlet of the discharge pipe. The second flow guide is arranged in the discharge pipe and fixedly connected to the first flow guide, and the second flow guide has a plurality of spoke parts and a plurality of diffusion ports. The diffusion end of the spoke part is fixedly connected to the first flow guide, and the converging end of the spoke part is connected in convergence; the diffusion ports are uniformly distributed between the spoke parts. After the wastewater passes through the first flow guide and the second flow guide, it is divided into multiple water streams and discharged into the sea, and by using the principle of point source turbulent jet, the wastewater can be quickly diffused and diluted in seawater, so that the ph value near the water outlet is improved by improving the neutralization reaction efficiency.

Description

Technical Field

[0001] The present application relates to the technical field of ship desulfurization systems, and in particular to a flow guiding device for a ship desulfurization system. Background Art

[0002] As environmental protection requirements become increasingly stringent, the exhaust emissions of ship exhaust systems are also subject to higher requirements. To meet these requirements, ship desulfurization systems have emerged, and ship desulfurization technology has become increasingly important.

[0003] Currently, wet flue gas desulfurization is the most commonly used desulfurization method on ships. This method includes open-cycle exhaust gas scrubbing with seawater, closed-cycle exhaust gas scrubbing with freshwater, and a mixed seawater and freshwater scrubbing method. All these modes generate large amounts of desulfurization wastewater, including desulfurization system circulating scrubbers and equipment cleaning wastewater. This wastewater is highly acidic and has a complex composition. The traditional method of discharging this wastewater directly into seawater without treatment lowers the pH value of the seawater, thereby damaging the marine ecosystem. Classification societies regulate the pH value of the seawater near the outlet, and direct discharge does not meet environmental standards.

[0004] Therefore, improvements are urgently needed to address the defects in the prior art. Summary of the Invention

[0005] The purpose of the present application is to provide a ship desulfurization system diversion device to solve the problem in the prior art that wastewater and seawater at the drain outlet cannot fully react, resulting in high pH in the sea area near the drain outlet.

[0006] To achieve the above objectives, this application adopts the following technical solutions.

[0007] An embodiment of the present application provides a desulfurization system diversion device for a ship, comprising: a discharge pipe, a first deflector, and a second deflector. The discharge pipe comprises an inlet and a drain port arranged opposite to each other. The first deflector is annular, arranged in the discharge pipe and located between the inlet and the drain port. The second deflector is arranged in the discharge pipe and fixedly connected to the first deflector, and the second deflector has a plurality of spoke portions and a plurality of diffusers; wherein the spoke portion has a diffuser end and a convergent end, the diffuser ends of the plurality of spoke portions are fixedly connected to the first deflector, and the convergent ends of the plurality of spoke portions are intersectingly connected; the plurality of diffusers are evenly distributed between the plurality of spoke portions; wherein the wastewater entering from the water inlet passes through the first deflector and the second deflector, is ejected from the plurality of diffusers, and is then discharged from the drain port.

[0008] Optionally, in some embodiments of the present application, the first deflector includes an intersecting deflector plate and a mounting plate; the deflector plate and the mounting plate are sealedly connected to the discharge pipe along the circumferential direction of the first deflector; the deflector plate is inclined to face the water inlet; and the mounting plate is inclined to face the drain outlet.

[0009] Optionally, in some embodiments of the present application, the discharge pipe has an inner pipe wall; the guide plate and the mounting plate of the first guide are welded and fixed to the inner pipe wall; the diffusion end of the spoke portion of the second guide is welded and fixed to the mounting plate of the first guide.

[0010] Optionally, in some embodiments of the present application, the first flow director has a V-shaped cross-section.

[0011] Optionally, in some embodiments of the present application, the inclination angle formed between the guide plate of the first guide and the inner pipe wall ranges from 25 degrees to 35 degrees; the distance between the first guide and the drain outlet is one quarter to one half of the length of the discharge pipe.

[0012] Optionally, in some embodiments of the present application, the spoke portion of the second deflector includes two intersecting diverter plates and a support plate; the two diverter plates are inclined to face the water inlet; and the support plate connects the two diverter plates and faces the drain outlet.

[0013] Optionally, in some embodiments of the present application, the spoke portion further includes a first ridge portion and two second ridge portions; the first ridge portion is located at the connection between the two diverter plates and protrudes toward the water inlet; the two second ridge portions are respectively formed at the connection between the two diverter plates and the support plate, and respectively protrude toward different diffusion ports; wherein the diffusion port of the second guide is surrounded by the diverter plates, the first ridge portion and the second ridge portion of the two adjacent spoke portions.

[0014] Optionally, in some embodiments of the present application, the diffusion port has a diffusion inlet and a diffusion outlet; wherein the area of ​​the diffusion inlet is larger than the area of ​​the diffusion outlet, the diffusion inlet faces the water inlet, and the diffusion outlet faces the drain outlet.

[0015] Optionally, in some embodiments of the present application, the two diverter plates and the support plate of each spoke portion are welded together to form a triangular tubular structure.

[0016] Optionally, in some embodiments of the present application, the plurality of spoke portions are welded and connected at the converging end, the plurality of spoke portions are evenly arranged, and the second deflector is centrally symmetrical.

[0017] Optionally, in some embodiments of the present application, the second deflector is in a M-shape, a cross-shape, or a U-shape; and the angle formed between adjacent spoke portions ranges from 60 degrees to 120 degrees.

[0018] Optionally, in some embodiments of the present application, the discharge pipe has an outer pipe wall; a plurality of ribs are arranged on the outer pipe wall, and the plurality of ribs are evenly distributed along the circumference of the outer pipe wall, and each rib extends along the axial direction of the discharge pipe; a flange is provided at the water inlet of the discharge pipe, and the flange surrounds the water inlet and extends radially outward along the discharge pipe.

[0019] In summary, the beneficial effects of the present application are as follows: the embodiment of the present application provides a ship desulfurization system diversion device, by arranging the first diverter in the discharge pipe and arranging the second diverter in the first diverter, the wastewater is diverted into multiple streams after passing through the first diverter and the second diverter and discharged into the sea. By utilizing the principle of point source turbulent jet, the wastewater can be rapidly diffused and diluted in the seawater, thereby improving the pH value near the drain outlet by improving the neutralization reaction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 This is a structural schematic diagram of a flow guide device for a ship desulfurization system provided in one embodiment of the present application;

[0022] Figure 2 yes Figure 1 The front structural diagram of the desulfurization system guide device of the ship is shown;

[0023] Figure 3 yes Figure 2 The schematic diagram of the cross-sectional structure of the desulfurization system guide device of the ship along the AA line is shown;

[0024] Figure 4 This is a front structural schematic diagram of a first deflector provided by an embodiment of the present application;

[0025] Figure 5 yes Figure 4 A cross-sectional view of the first deflector along line BB;

[0026] Figure 6is a front structural schematic diagram of a second deflector provided in one embodiment of the present application; and

[0027] Figure 7 yes Figure 6 A bottom view of the second deflector is shown.

[0028] Description of main reference numerals:

[0029] 1. Flow guide device of ship desulfurization system; 10. Discharge pipe; 11. Water inlet; 12. Discharge outlet; 13. Inner pipe wall; 14. Outer pipe wall; 20. First deflector; 21. Deflector plate; 22. Mounting plate; A. Tilt angle; 30. Second deflector; 31. Spoke portion; 310. Diffusion end; 311. Converging end; 312. Diverter plate; 313. Support plate; 314. First ridge portion; 315. Second ridge portion; 32. Diffuser port; 320. Diffusion inlet; 321. Diffusion outlet; 40. Rib plate; 50. Flange. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of the present application. In addition, it should be understood that the specific embodiments described herein are only used to illustrate and explain the present application, and are not used to limit the present application. In the present application, unless otherwise specified, the directional words used, such as "up", "down", "left" and "right", can be the directions of the actual use or working state of the device, can also be the directions of the drawings with reference to the drawings, or can refer to two relative directions; while "inside" and "outside" refer to the outline of the device.

[0031] An embodiment of the present application provides a flow diversion device for a ship desulfurization system, which is used to fully mix wastewater and seawater, improve the neutralization reaction efficiency of wastewater and seawater, and thus increase the pH value near the drain outlet.

[0032] Please refer to Figure 1 、 Figure 2 and Figure 3 The ship desulfurization system flow guide device 1 includes a discharge pipe 10, a first flow guide 20 and a second flow guide 30.

[0033] The discharge pipe 10 includes a water inlet 11 and a water outlet 12 that are oppositely arranged.

[0034] The first flow deflector 20 is annular and is disposed in the discharge pipe 10 and located between the water inlet 11 and the drain outlet 12 .

[0035] The second flow deflector 30 is disposed in the exhaust pipe 10 and fixedly connected to the first flow deflector 20 . The second flow deflector 30 has a plurality of spoke portions 31 and a plurality of diffusion ports 32 .

[0036] The spoke portion 31 has a diffusion end 310 and a convergence end 311, the diffusion ends 310 of the multiple spoke portions 31 are fixedly connected to the first deflector 20, and the convergence ends 311 of the multiple spoke portions 31 are intersected and connected; the multiple diffusion ports 32 are evenly distributed between the multiple spoke portions 31; the wastewater entering from the water inlet 11 passes through the guidance of the first deflector 20 and the second deflector 30, is ejected from the multiple diffusion ports 32, and is then discharged from the drain port 12.

[0037] As can be seen from the above, the sum of the areas of the multiple diffusers 32 of the second deflector 30 must be smaller than the area of ​​the water inlet 11. When the desulfurization system deflector device 1 of the present application is in use, the wastewater is divided into multiple streams by the multiple diffusers 32 of the second deflector 30. The wastewater is diffused and diluted in the seawater using the principle of point-source turbulent jet flow. The Venturi effect is also used to increase the flow rate of the discharged water, enhance the dilution effect, and improve the neutralization efficiency.

[0038] Please refer to Figure 1 As shown, the discharge pipe 10 has an inner wall 13 and an outer wall 14. The discharge pipe 10 is made of stainless steel, such as super duplex stainless steel, and is butt-welded. The pipe length can be determined based on the project, with a pipe diameter of DN300-DN450.

[0039] In one embodiment, Figure 1 As shown, a plurality of ribs 40 are provided on the outer tube wall 14 of the discharge pipe 10. The plurality of ribs 40 are evenly distributed along the circumference of the outer tube wall 14, and each rib 40 extends along the axial direction of the discharge pipe 10. The ribs 40 are welded to the outer tube wall 14, for example, welded between the hull and the discharge pipe 10, to fix the guide device, and can provide external reinforcement for the discharge pipe 10. The ribs 40 are made of stainless steel, for example, duplex stainless steel. Optionally, the length of the ribs 40 should be greater than half the total length of the discharge pipe 10. Optionally, the width of the ribs 40 should be greater than 10 mm. In short, the present application provides a plurality of ribs 40 on the outer tube wall 14 of the discharge pipe 10, which can ensure the use strength of the ship desulfurization system guide device 1 and improve stability.

[0040] In one embodiment, Figure 1As shown, a flange 50 is provided at the water inlet 11 of the discharge pipe 10. The flange 50 surrounds the water inlet 11 and extends radially outwardly along the discharge pipe 10. In one embodiment, the flange 50 is fixedly connected to the discharge pipe 10 by welding. The flange 50 is used to connect the discharge pipe 10 to a sewage pipe, so that the discharge pipe 10 can receive wastewater from the sewage pipe.

[0041] Please refer to Figure 4 and Figure 5 The detailed structure of the first deflector 20 is shown, and the first deflector 20 includes a deflector plate 21 and a mounting plate 22 that are intersecting and connected. The deflector plate 21 and the mounting plate 22 are both annular and connected together to form the first deflector 20, which has a V-shaped cross-section.

[0042] Please combine Figures 3 to 5 As shown, the guide plate 21 and the mounting plate 22 are sealedly connected to the discharge pipe 10 along the circumferential direction of the first deflector 20; the guide plate 21 is tilted toward the water inlet 11; and the mounting plate 22 is tilted toward the drain outlet 12.

[0043] In one embodiment, Figure 3 As shown, the deflector plate 21 and the mounting plate 22 of the first deflector 20 are both welded to the inner tube wall 13 of the discharge pipe 10. When the first deflector 20 is welded to the inner tube wall 13, the inclination angle A formed between the deflector plate 21 and the inner tube wall 13 ranges from 25 degrees to 35 degrees; and the distance between the first deflector 20 and the drain outlet 12 is from one-quarter to one-half the length of the discharge pipe 10.

[0044] In one embodiment, the first flow director 20 is made of stainless steel, such as super duplex stainless steel.

[0045] Please refer to Figure 6 and Figure 7 The detailed structure of the second deflector 30 is shown, and each of the spoke portions 31 of the second deflector 30 includes two intersecting diverter plates 312 and a support plate 313; the two diverter plates 312 are inclined facing the water inlet 11; the support plate 313 connects the two diverter plates 312 and faces the drain outlet 12.

[0046] In a specific implementation, the diverter plate 312 and the support plate 313 are both made of super duplex stainless steel. Figure 6 As shown, the two diverter plates 312 and the support plate 313 of each spoke portion 31 are welded together to form a triangular tubular structure.

[0047] Furthermore, if Figure 6 As shown, the plurality of spoke portions 31 are welded and connected at the converging end 311, and the second deflector 30 is centrally symmetrical. For example, the plurality of spoke portions 31 are evenly arranged along the circumference of the second deflector 30, and of course, they can also be non-centrally symmetrical. In one embodiment, the second deflector 30 can be in a cross shape. It is conceivable that the second deflector 30 can also be in a cross shape or a large letter shape. In this embodiment, the angle formed between adjacent spoke portions 31 ranges from 60 degrees to 120 degrees, and the overall height of the second deflector 30 is 35-60 mm.

[0048] In one embodiment, Figure 6 As shown, the spoke portion 31 further includes a first ridge portion 314 and two second ridge portions 315. The first ridge portion 314 is located at the connection between the two diverter plates 312 and protrudes toward the water inlet 11; the two second ridge portions 315 are respectively formed at the connection between the two diverter plates 312 and the support plate 313, and protrude toward different diffusers 32. The diffuser 32 of the second deflector 30 is surrounded by the diverter plates 312, the first ridge portion 314, and the second ridge portions 315 of two adjacent spoke portions 31.

[0049] In one embodiment, Figure 6 As shown, the diffusion port 32 has a diffusion inlet 320 and a diffusion outlet 321 ; wherein the area of ​​the diffusion inlet 320 is larger than the area of ​​the diffusion outlet 321 , the diffusion inlet 320 faces the water inlet 11 , and the diffusion outlet 321 faces the drain port 12 .

[0050] like Figure 3 As shown, the second deflector 30 is welded to the first deflector 20. Specifically, the diffuser end 310 of the spoke portion 31 of the second deflector 30 is welded to the mounting plate 22 of the first deflector 20. The first deflector 20 is then welded to the inner pipe wall 13 of the discharge pipe 10, so that the second deflector 30 and the first deflector 20 are coaxially welded in the discharge pipe 10.

[0051] In summary, an embodiment of the present application provides a desulfurization system diversion device 1 for a ship. During operation, wastewater from the sewage pipe enters the discharge pipe 10 through the flange 50. After being diverted by the first deflector 20 and diverted by the second deflector 30, it is divided into multiple streams and discharged into the sea. Utilizing the principle of point source turbulent jet, the wastewater can be rapidly diffused and diluted in the seawater. Therefore, the desulfurization system diversion device 1 for a ship of the present application can fully mix the wastewater with the seawater, improve the efficiency of the neutralization reaction between the wastewater and the seawater, and thus increase the pH value near the outlet 12. In addition, because the spoke portion 31 of the second deflector 30 is a triangular tubular structure formed by welding three pieces of super duplex stainless steel, the weight of the entire desulfurization system diversion device 1 for a ship can be reduced, thereby reducing costs. In addition, an embodiment of the present application also designs a rib 40 between the outer tube wall 14 of the discharge pipe 10 and the hull, thereby ensuring the strength of the desulfurization system diversion device 1 for a ship of the present application and improving the stability of the present application.

[0052] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0053] The above is a detailed introduction to the technical solutions provided in the embodiments of the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea. At the same time, for those skilled in the art, based on the ideas of the present application, there may be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A flow guide device for a ship desulfurization system, characterized in that: include: A discharge pipe, comprising an inlet and a discharge outlet arranged opposite to each other; a first flow deflector, annular in shape, disposed in the discharge pipe and located between the water inlet and the drain outlet; the first flow deflector comprises a deflector plate and a mounting plate intersecting and connected, the deflector plate having a first port and a second port disposed opposite to each other, the first port being disposed toward the water inlet, the second port being disposed toward the drain outlet, and the opening area of ​​the first port being larger than the opening area of ​​the second port; The second deflector is arranged in the discharge pipe and fixedly connected to the first deflector, and the second deflector has a plurality of spoke parts and a plurality of diffusion ports; wherein the spoke part has a diffusion end and a convergence end, the diffusion ends of the plurality of spoke parts are fixedly connected to the mounting plate of the first deflector, and the convergence ends of the plurality of spoke parts are intersecting and connected; the plurality of diffusion ports are evenly distributed among the plurality of spoke parts; the spoke part of the second deflector includes two intersecting diverter plates and a support plate, the two diverter plates are inclined to face the water inlet, the support plate is connected to the two diverter plates and faces the drain port; the spoke part The strip portion further includes a first ridge portion and two second ridge portions, wherein the first ridge portion is located at the connection between the two diverter plates and protrudes toward the water inlet, and the two second ridge portions are respectively formed at the connection between the two diverter plates and the support plate, and respectively protrude toward different diffusion ports. The diffusion port of the second flow guide is surrounded by the diverter plates, the first ridge portion, and the second ridge portion of the two adjacent spoke portions; the diffusion port has a diffusion inlet and a diffusion outlet, the area of ​​the diffusion inlet is larger than the area of ​​the diffusion outlet, the diffusion inlet faces the water inlet, and the diffusion outlet faces the drain port; The wastewater entering from the water inlet passes through the first flow guide and the second flow guide, is ejected from the plurality of diffusion ports, and is then discharged from the drain port.

2. The ship desulfurization system flow guide device according to claim 1, characterized in that: The guide plate and the mounting plate are sealedly connected to the discharge pipe along the circumferential direction of the first guide; The guide plate is inclined to face the water inlet; The mounting plate faces the drain port in an inclined manner.

3. The ship desulfurization system flow guide device according to claim 2, characterized in that: The discharge pipe has an inner pipe wall; The guide plate and the mounting plate of the first guide are both welded and fixed to the inner tube wall; The diffusion end of the spoke portion of the second deflector is welded and fixed to the mounting plate of the first deflector; The second flow guide and the first flow guide are coaxially welded in the discharge pipe.

4. The ship desulfurization system flow guide device according to claim 2, characterized in that: The first flow director has a V-shaped cross section.

5. The ship desulfurization system flow guide device according to claim 3, characterized in that: The inclination angle formed between the guide plate of the first guide and the inner tube wall is in a range of 25 degrees to 35 degrees; The distance between the first flow guide and the drain outlet is one quarter to one half of the length of the drain pipe.

6. The ship desulfurization system flow guide device according to claim 1, characterized in that: The two diverter plates and the support plate of each spoke portion are welded and connected to form a triangular tubular structure.

7. The ship desulfurization system flow guide device according to claim 1, characterized in that: The plurality of spoke portions are welded and connected at the converging end, the plurality of spoke portions are evenly arranged, and the second deflector is centrally symmetrical.

8. The flow guiding device for a ship desulfurization system according to claim 1, characterized in that: The second deflector is in the shape of a cross, a cross, or a square; The included angle formed between adjacent spoke portions ranges from 60 degrees to 120 degrees.

9. The ship desulfurization system flow guide device according to claim 1, characterized in that: The discharge pipe has an outer pipe wall; A plurality of ribs are provided on the outer tube wall, the plurality of ribs are evenly distributed along the circumference of the outer tube wall, and each rib extends along the axial direction of the discharge pipe; A flange is provided at the water inlet of the discharge pipe, and the flange surrounds the water inlet and extends outwardly along the radial direction of the discharge pipe.

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