Box type exhaust device for marine diesel generating set
By designing a box exhaust device in a marine diesel generator set, the problem of exhaust pipe layout, water collection and drainage is solved in the case of limited space, and efficient exhaust and integrated design is achieved, reducing design complexity and risk.
Patent Information
- Application Number
- CN202422207118.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-10
- Publication Date
- 2025-06-10
- Estimated Expiration
- 2034-09-10
AI Technical Summary
In ship design, there are space limitations on the layout, water collection and discharge of diesel generator set exhaust pipes, resulting in damage to equipment and increased design complexity.
A box-type exhaust device is designed, adopting an inner and outer double-layer box structure, with a heat insulation layer at intervals, and the integration of exhaust, water collection and drainage is achieved through the connection between the inclined bottom plate and the flange.
Reduces space requirements, improves exhaust effect and integration, reduces design load and complexity, and makes regional design simpler and more reliable.
Smart Images
Figure CN222962947U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of exhaust of marine diesel generators, in particular to a box-type exhaust device for marine diesel generator sets. Background Technique
[0002] In current ship designs, the exhaust pipe outlet of the diesel generator set is directly connected to the inlet of the low-pressure SCR device of the main generator set through an exhaust pipe. Due to the presence of condensate on the pipe wall of the exhaust pipe, rainwater, and washing residues of the low-pressure SCR of the generator set, in this limited space, water collection and drainage pipelines must be arranged to prevent water from entering the supercharger through the exhaust pipe and damaging the equipment. In the prior art, generally, the exhaust pipe is directly connected to an elbow, a straight pipe section is used at the lower end of the low-pressure SCR, and the end is welded and sealed with a round plate. A drain pipe is arranged through a hole in the middle of the round plate. However, due to the limitation of the elbow radius, the space requirement is relatively high. Because the engine room space is limited, the layout of the main generator set and the low-pressure SCR device will be greatly affected. Summary of the Invention
[0003] The purpose of the utility model is to overcome the above deficiencies and provide a box-type exhaust device for marine diesel generator sets, which is used for the exhaust pipe of marine diesel generator sets. In a limited height space, while maintaining the normal exhaust function, it solves the problems of exhaust pipe layout, water collection, and drainage.
[0004] The purpose of the utility model is achieved as follows:
[0005] A box-type exhaust device for marine diesel generator sets, which includes a box body. The box body includes an inner box body and an outer box body sleeved outside the inner box body. There is a heat insulation layer between the outer box body and the inner box body. The top surface of the box body is provided with an outlet through hole, and the bottom surface of the box body is provided with an inlet through hole and a drain through hole arranged left and right; the bottom plate of the box body is set as an inclined bottom plate, and the inclined bottom plate is inclined downward towards the drain through hole end;
[0006] The outlet through hole is welded and connected to the outlet end through an outlet short pipe to realize flange connection between the outlet end and the box body; the inlet through hole is welded and connected to the inlet end through an inlet short pipe to realize flange connection between the inlet end and the box body, and the drain through hole is welded and connected to the drain end through a drain short pipe to realize flange connection between the drain end and the box body; at least one maintenance port is provided on the side surface of the box body;
[0007] Two mutually perpendicular angle steel partitions are respectively arranged at the four corners of the heat insulation layer, and heat insulation materials are filled between the two angle steel partitions in the same axial direction.
[0008] Furthermore, the inclination angle of the bottom plate of the box body inclined downward is 5°-35°.
[0009] Further, the top end of the inlet short pipe extends into the inlet through hole of the box body, and the extending section of the inlet short pipe is at least one-tenth of the overall length, so as to prevent the condensed water in the exhaust pipe from flowing into the equipment from the inlet end.
[0010] Further, the inspection opening is a manhole cover fastened by bolts and nuts, which is opened during daily maintenance.
[0011] Further, the angle steel partition is installed on the outer box body through fixing bolts.
[0012] Further, the outer box body and the inner box body are fixedly connected by stud bolts and spring buckles.
[0013] Further, the thickness of the heat insulation layer is greater than 40 mm.
[0014] Further, a silicone high-temperature resistant paint layer is provided on the outer wall of the inner box body.
[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows:
[0016] The present utility model provides a box-type exhaust device for a marine diesel generator set. Through a simple box structure and direct connection, there is no need to use angled elbows, reducing the space requirement, enabling the integration of exhaust layout, water collection, drainage, and maintenance in a small space, improving the integration degree, reducing the design load and design complexity, making the regional design simpler, and improving the design reliability. The box structure of the present utility model adopts an inner and outer double-layer box body, and a heat insulation layer is provided between the double-layer box bodies, which can reduce the condensation water on the inner wall of the box body from scraping the wall, maximizing the water collection and drainage effect, and thus improving the exhaust effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 is a schematic structural diagram of the present utility model.
[0018] Figure 2 is a schematic cross-sectional view of the heat insulation layer of the present utility model.
[0019] Wherein:
[0020] box body main body 1, outer box body 11, inner box body 12, inlet end 2, outlet end 3, drain end 4, inspection opening 5, heat insulation layer 6, angle steel partition 61, fixing bolt 62, stud bolt 63, spring buckle 64, thermal insulation material 65. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0021] To better understand the technical solution of the present utility model, the following will be described in detail in conjunction with relevant drawings. It should be understood that the following specific embodiments are not intended to limit the specific implementation forms of the technical solution of the present utility model, and they are only the implementation forms that the technical solution of the present utility model can adopt. It should be noted first that the description of the positional relationship of each component herein, such as component A being located above component B, is based on the relative positions of the components in the drawings and is not intended to limit the actual positional relationship of the components. Embodiment 1
[0022] See Figure 1 - Figure 2 , Figure 1 a structural schematic diagram of the present utility model is drawn. As shown in the figure, a box-type exhaust device for a marine diesel generator set according to the present utility model includes a box body main body 1. The box body main body 1 includes an inner box body 12 and an outer box body 11 sleeved outside the inner box body 12. A heat insulation layer 6 is provided between the outer box body 11 and the inner box body 12. An outlet through hole is provided on the top surface of the box body main body 1, and an inlet through hole and a drain through hole are provided on the bottom surface of the box body main body 1 and arranged left and right.
[0023] The bottom plate of the box body main body 1 is set as an inclined bottom plate, and the inclined bottom plate is inclined downward towards the drain through hole end, and the inclination angle is 5° - 35°.
[0024] The outlet through hole is welded and connected to the outlet end 3 through an outlet short pipe to realize the flange connection between the outlet end 3 and the box body main body 1; the inlet through hole is welded and connected to the inlet end 2 through an inlet short pipe to realize the flange connection between the inlet end 2 and the box body main body 1. The top end of the inlet short pipe extends into the inlet through hole of the box body main body 1, and the extending section of the inlet short pipe is at least one-tenth of the overall length to prevent the condensate in the exhaust pipe from flowing into the equipment from the inlet end 1;
[0025] The drain through hole is welded and connected to the drain end 4 through a drain short pipe to realize the flange connection between the drain end 4 and the box body main body 1. Since the drain end 4 is located at the lower position inclined downward, the water collected in the exhaust pipe due to various reasons is led out through the drain end 4.
[0026] At least one maintenance opening 5 is provided on the side surface of the box body main body 1. The maintenance opening 5 is a handhole cover fastened by bolts and nuts, which is opened during daily maintenance to clean the sundries, soot, oil residue, and SCR waste inside the box body main body 1.
[0027] The outer wall of the inner box body 12 is provided with a silicone high-temperature resistant paint layer. Two mutually perpendicular angle steel partitions 61 are respectively provided at the four corners of the heat insulation layer 6, and an adiabatic material 65 is filled between the two angle steel partitions 61 in the same axial direction.
[0028] The angle steel partition 61 is installed on the outer box body 11 through fixing bolts 62, and the outer box body 11 and the inner box body 12 are connected and fixed through double-headed bolts 63 and spring clasps 64.
[0029] A plurality of lifting lugs are respectively arranged on the top surface and the side surface of the box body main body 1.
[0030] The heat insulation material 65 can adopt rock wool, glass cloth or galvanized iron sheet.
[0031] The thickness of the heat insulation layer 6 is greater than 40 mm.
[0032] Working principle:
[0033] The utility model provides a box-type exhaust device for a marine diesel generator set, which adopts box-type exhaust. The inlet end, the outlet end and the drain end adopt flange connection modes and are respectively connected with the box-type body by welding with short pipes.
[0034] The short pipe at the inlet end extends into the box-type body for a certain length to prevent the condensed water in the exhaust pipe from flowing into the equipment from the inlet end; the outlet end is directly connected with the box-type body through a short pipe to realize normal exhaust outflow; the drain end and the bottom plate of the box-type body are welded with openings, and the water collected in the exhaust pipe due to various reasons is led out through the drain end 4.
[0035] The box-type body is the main body of the device. The exhaust flow flows from the inlet end to the outlet end in the box body under the pressure of continuous exhaust of the equipment to realize the basic exhaust requirement; the bottom plate area serves as a water collection area and has a small slope to collect the water formed in the exhaust pipe.
[0036] The inspection port is a manhole cover fastened by bolts and nuts, which is opened during daily maintenance to clean the sundries, soot, oil residue and SCR waste in the box body.
[0037] The box body adopts inner and outer side shells, and the heat insulation layer is between the two layers of shells. The inner shell is surface-treated: before wrapping the heat insulation layer, the shell is coated with zinc silicate shop primer; the outer shell can adopt galvanized steel sheet or aluminum foil glass cloth. The heat insulation layer plays a role in isolating the heat transfer of the exhaust, reducing the temperature rise of the area, continuing to utilize the exhaust heat energy subsequently, and reducing the risk of scalding personnel.
[0038] The above are only specific application examples of the utility model, which do not constitute any limitation to the protection scope of the utility model. Any technical solutions formed by equivalent transformation or equivalent substitution fall within the scope of the protection of the utility model rights.
Claims
1. A box-type exhaust device for a marine diesel generator set, characterized in that: The invention comprises a box body (1), the box body (1) comprising an inner box body (12) and an outer box body (11) sleeved outside the inner box body (12), a heat insulation layer (6) being provided between the outer box body (11) and the inner box body (12), an outlet through hole being provided on the top surface of the box body (1), and an inlet through hole and a discharge through hole being provided on the left and right sides of the bottom surface of the box body (1); the bottom plate of the box body (1) is provided as an inclined bottom plate, and the inclined bottom plate is provided downwardly inclined toward one end of the discharge through hole; The outlet through hole is connected to the outlet end (3) via an outlet short tube, so that the outlet end (3) is flange-connected to the box body (1); the inlet through hole is connected to the inlet end (2) via an inlet short tube, so that the inlet end (2) is flange-connected to the box body (1); the discharge through hole is connected to the discharge end (4) via a discharge short tube, so that the discharge end (4) is flange-connected to the box body (1); at least one inspection port (5) is provided on a side surface of the box body (1); Two mutually perpendicular angle steel partitions (61) are respectively provided at the four corners of the heat insulation layer (6), and a heat insulation material (65) is filled between the two angle steel partitions (61) in the same axial direction.
2. A box-type exhaust device for a marine diesel generator set according to claim 1, characterized in that: The bottom plate of the box body (1) is tilted downward at an angle of 5° to 35°.
3. A box-type exhaust device for a marine diesel generator set according to claim 1, characterized in that: The top end of the inlet short pipe extends into the inlet through hole of the box body (1), and the extending section of the inlet short pipe is at least one tenth of the overall length, so as to prevent condensed water in the exhaust pipe from flowing into the equipment from the inlet end (2).
4. A box-type exhaust device for a marine diesel generator set according to claim 1, characterized in that: The inspection opening (5) is a hand hole cover fastened with bolts and nuts and is opened during routine inspection.
5. The box-type exhaust device for a marine diesel generator set according to claim 1, characterized in that: The angle steel partition (61) is mounted on the outer box body (11) via fixing bolts (62).
6. A box-type exhaust device for a marine diesel generator set according to claim 1, characterized in that: The outer box body (11) and the inner box body (12) are connected and fixed via stud bolts (63) and spring buckles (64).
7. The box-type exhaust device for a marine diesel generator set according to claim 1, characterized in that: The thickness of the thermal insulation layer (6) is greater than 40 mm.
8. A box-type exhaust device for a marine diesel generator set according to claim 1, characterized in that: The outer wall of the inner box (12) is provided with a high temperature resistant silicone paint layer.