New marine fgss exhaust silencer

Abstract

The utility model discloses a new -type marine FGSS exhaust silencer, including the silencer shell, the both ends of silencer shell are connected with the oval head, and the oval head of bottom end is connected with the import, and the oval head of top end is connected with the export, the inner wall of oval head and silencer shell is equipped with centrifugal glass sound -proof cotton, heat -insulating aluminium foil, the import airflow uniform distribution board is set up in the silencer shell, and the offset airflow uniform distribution board is set up, and the import central gas guide pipe is set up in the import airflow uniform distribution board, and the offset gas guide short pipe, offset gas guide long pipe interval and alternately distribute in several layers offset airflow uniform distribution board, the air hole is seted up in the import airflow uniform distribution board and offset airflow uniform distribution board. The utility model discloses satisfy ordinary FGSS silencer efficacy, and have the advantages such as better sound insulation effect, convenient to dismantle and install, simple manufacture, stable performance.

Description

Technical Field

[0001] This utility model relates to the field of exhaust muffler technology, and in particular to a novel marine FGSS exhaust muffler. Background Technology

[0002] An exhaust silencer is a device installed on ducts that produce high-speed, high-volume exhaust gases. It is widely used in shipbuilding, chemical, and pharmaceutical industries. Silencers are installed on the exhaust pipes of many fans, compressors, and main equipment to reduce noise pollution. Silencers typically serve several purposes: reducing noise, improving the working environment, and extending the service life of equipment.

[0003] Marine FGSS exhaust silencers are typically installed on the PR skid and the piping leading from the GVT to the snorkel mast. They need to be secured to a stable steel structure to prevent vibration. Ordinary marine FGSS exhaust silencers, due to their larger size, require more installation space; furthermore, their noise reduction effect is generally limited, resulting in a noisy working environment. The high noise also causes significant vibration in the piping, affecting instrument valves. Communication between maintenance personnel on deck is also greatly hindered. Utility Model Content

[0004] This invention addresses the problems of existing marine FGSS exhaust mufflers, such as simple structure, large manufacturing volume, inability to withstand high pressure and high-speed airflow, and poor noise reduction effect. It provides a new type of marine FGSS exhaust muffler that achieves rapid and effective exhaust noise reduction while also having the advantages of simple manufacturing, saving material costs, easy installation, and maintenance-free operation.

[0005] To solve the above-mentioned technical problems, the technical solution of this utility model is: a novel marine FGSS exhaust muffler, including a muffler shell, both ends of which are connected to elliptical heads, the bottom elliptical head communicating with the inlet and the top elliptical head communicating with the outlet; the inner walls of the elliptical heads and the muffler shell are provided with centrifugal glass sound insulation cotton and heat insulation aluminum foil; an inlet airflow distribution plate and an offset airflow distribution plate are provided inside the muffler shell, the inlet central air guide pipe is located inside the inlet airflow distribution plate, and offset air guide short pipes and offset air guide long pipes are spaced apart and alternately distributed in several layers of offset airflow distribution plates; air holes are opened in both the inlet airflow distribution plate and the offset airflow distribution plate.

[0006] Furthermore, the muffler housing has an outer cylindrical structure.

[0007] Furthermore, the outer wall of the muffler housing is provided with muffler fixing lugs.

[0008] Furthermore, the inlet is connected to the air outlet pipe of the FGSS system.

[0009] Furthermore, the outlet is connected to the ventilated mast.

[0010] Furthermore, reinforcing plates are welded to the outer walls of the central inlet air duct, the offset short air duct, and the offset long air duct.

[0011] Furthermore, both the offset air guide short tube and the offset air guide long tube have rhomboidly distributed air vents on their side walls.

[0012] Furthermore, a central air guide pipe hole is provided at the center of the inlet airflow distribution plate, and several air holes are evenly distributed around the central air guide pipe hole.

[0013] Furthermore, the biased air guide hole of the biased airflow distribution plate is eccentrically opened, and the air holes in the biased airflow distribution plate are evenly distributed on one side of the biased air guide hole.

[0014] Furthermore, the inlet airflow distribution plate and the inlet center air duct form a first-stage scattering component; the biased air duct and the biased airflow distribution plate form a second-stage scattering component; and the biased air duct and the biased airflow distribution plate form a third-stage scattering component.

[0015] The beneficial effects of this utility model are:

[0016] 1. The marine FGSS exhaust silencer adopts a combination of end caps and butt-welded pipes at both ends, which are welded to the pipeline, thus solving the problems of poor sealing performance and large space occupation.

[0017] 2. The scattering components consisting of a biased short air guide pipe and a biased airflow distribution plate, as well as the scattering components consisting of a biased long air guide pipe and a biased airflow distribution plate, are arranged alternately. Each stage of the component disperses and slows down the exhaust from the previous stage, solving the problems of slow noise reduction and large vibration of ordinary FGSS exhaust mufflers.

[0018] 3. The side walls of the offset air guide short pipe and the offset air guide long pipe are opened with diamond-shaped air vents, which solves the problem of low single-stage channel frequency reduction interference efficiency of ordinary FGSS exhaust mufflers.

[0019] 4. Centrifugal glass sound insulation cotton solves the problem of sound wave energy propagating through the outer wall of the silencer;

[0020] 5. The heat-insulating aluminum foil solves the problem of temperature affecting the sound insulation cotton of centrifugal glass, and also solves the problem of sound waves being transmitted through the inner wall of the silencer. Attached Figure Description

[0021] Fig. 1 This is a schematic diagram of the structure of this utility model;

[0022] Fig. 2 This is a schematic diagram of the inlet airflow distribution plate structure;

[0023] Fig. 3 This is a schematic diagram of an offset airflow distribution plate structure.

[0024] Among them: 1-Inlet, 2-Elliptical end cap, 3-Inlet airflow distribution plate, 4-Inlet central air duct, 5-Offset air duct short pipe, 6-Offset air duct long pipe, 7-Offset airflow distribution plate, 8-Silencer housing, 9-Silencer fixed support lug, 10-Centrifugal glass sound insulation cotton, 11-Heat insulation aluminum foil, 12-Outlet. Detailed Implementation

[0025] The following is in conjunction with the appendix Figs. 1-3 The specific embodiments of this utility model will be further described below.

[0026] The new marine FGSS exhaust muffler includes a muffler housing 8, which is a cylindrical structure with an outer cavity. The outer wall of the muffler housing 8 is equipped with muffler fixing lugs 9. Both ends of the muffler housing 8 are connected to elliptical heads 2. The bottom elliptical head 2 is connected to an inlet 1, which is connected to the FGSS system exhaust pipe. The top elliptical head 2 is connected to an outlet 12, which is connected to a vent. The inner walls of the elliptical heads 2 and the muffler housing 8 are lined with centrifugal glass sound insulation cotton 10 and heat-insulating aluminum foil 11. The centrifugal glass sound insulation cotton 10 absorbs sound wave energy and reduces noise transmission, while the heat-insulating aluminum foil 11 protects the centrifugal glass sound insulation cotton 10 and... It can reflect internal sound waves and reduce noise transmission; the silencer housing 8 is equipped with an inlet airflow distribution plate 3 and an offset airflow distribution plate 7. The inlet airflow distribution plate 3 has a central air guide hole at its center, and several air holes are evenly distributed around the central air guide hole. The inlet central air guide pipe 4 is located inside the inlet airflow distribution plate 3. The offset air guide hole of the offset airflow distribution plate 7 is eccentrically opened, and the air holes in the offset airflow distribution plate 7 are evenly distributed on one side of the offset air guide hole. Offset air guide short pipes 5 and offset air guide long pipes 6 are distributed alternately and intermittently within several layers of offset airflow distribution plates 7; air holes are opened in both the inlet airflow distribution plate 3 and the offset airflow distribution plate 7. The outer walls of the inlet central air guide pipe 4, the offset air guide short pipe 5, and the offset air guide long pipe 6 are all welded with reinforcing plates. Both the biased air guide short pipe 5 and the biased air guide long pipe 6 have diamond-shaped ventilation holes on their sidewalls to increase the interaction between sound waves and materials and reduce noise propagation. The inlet airflow distribution plate 3 and the inlet center air guide pipe 4 form a primary scattering component, which evenly distributes and slows down the exhaust gas entering the muffler; the biased air guide short pipe 5 and the biased airflow distribution plate 7 form a secondary scattering component, which distributes and slows down the exhaust gas from the primary scattering component; the biased air guide long pipe 6 and the biased airflow distribution plate 7 form a tertiary scattering component, which distributes and slows down the exhaust gas from the secondary scattering component. The biased air guide short pipe 5, the biased air guide long pipe 6, and the biased airflow distribution plate 7 can be arranged alternately to form a fourth-stage, fifth-stage, etc., scattering component to gradually scatter and slow down the exhaust gas to achieve noise reduction, and so on.

[0027] Working principle:

[0028] In use, the FGSS system's outlet pipe is connected to the FGSS exhaust muffler inlet 1, and the FGSS exhaust muffler outlet 12 is connected to the ventilation mast. High-velocity gas flowing from the FGSS system enters the exhaust muffler, where it passes through the inlet airflow distribution plate 3 and the inlet central air guide pipe 4, reducing the gas velocity. The high-velocity gas impacts the inlet airflow distribution plate 3, further reducing the outlet velocity and vibration. This allows sound waves to be repeatedly scattered internally, increasing the interaction between the sound waves and the muffler's internal materials—this is primary scattering. The decelerated airflow continues to flow through the offset air guide short pipe 5 and the offset air guide long pipe 6. The alternating direction changes of the airflow and the sieve effect on the offset airflow distribution plate 7 achieve secondary, tertiary, quaternary, and quinary sound wave scattering. Simultaneously, the installation orientation of the offset air guide short pipe 5 and the offset air guide long pipe 6, along with the diamond-shaped azimuth holes on the air guide pipes, cause interference between different sound waves, reducing noise propagation. The centrifugal glass sound insulation cotton 10 and heat insulation aluminum foil 11 on the inner wall of the exhaust muffler can further absorb and reflect the already weakened noise inside, achieving a significant reduction in noise.

[0029] The number of holes in the inlet airflow distribution plate 3 and the size of the inlet central air duct 4 can be recalculated based on the airflow rate; the number of scattering components consisting of the offset air duct short duct 5, the offset air duct long duct 6, and the offset airflow distribution plate 7 can be increased; the diameter of the FGSS exhaust muffler inlet 1 and the FGSS exhaust muffler outlet 12 can be changed.

[0030] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the scope of the technology disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A new type of marine FGSS exhaust muffler, characterized in that, The silencer housing (8) includes an elliptical end cap (2) connected to both ends of the silencer housing (8). The elliptical end cap (2) at the bottom is connected to the inlet (1), and the elliptical end cap (2) at the top is connected to the outlet (12). The inner walls of the elliptical end cap (2) and the silencer housing (8) are provided with centrifugal glass sound insulation cotton (10) and heat insulation aluminum foil (11). The silencer housing (8) is provided with an inlet airflow distribution plate (3) and an offset airflow distribution plate (7). The inlet central air guide pipe (4) is located in the inlet airflow distribution plate (3). The offset air guide short pipe (5) and the offset air guide long pipe (6) are distributed alternately in several layers of offset airflow distribution plates (7). The inlet airflow distribution plate (3) and the offset airflow distribution plate (7) are provided with air holes.

2. The novel marine FGSS exhaust muffler according to claim 1, characterized in that, The muffler housing (8) is a cylindrical structure with an outer cavity.

3. The novel marine FGSS exhaust muffler according to claim 1, characterized in that, The outer wall of the muffler housing (8) is provided with muffler fixing lugs (9).

4. The novel marine FGSS exhaust muffler according to claim 1, characterized in that, The inlet (1) is connected to the air outlet pipe of the FGSS system.

5. The novel marine FGSS exhaust muffler according to claim 1, characterized in that, The outlet (12) is connected to the ventilated mast.

6. The novel marine FGSS exhaust muffler according to claim 1, characterized in that, The outer walls of the central inlet air duct (4), the offset short air duct (5), and the offset long air duct (6) are all welded with reinforcing plates.

7. The novel marine FGSS exhaust muffler according to claim 1, characterized in that, Both the offset air guide short tube (5) and the offset air guide long tube (6) have rhomboidly distributed air vents on their side walls.

8. The novel marine FGSS exhaust muffler according to claim 1, characterized in that, The inlet airflow distribution plate (3) has a central air guide hole at its center, and several air holes are evenly distributed around the central air guide hole.

9. The novel marine FGSS exhaust muffler according to claim 1, characterized in that, The biased airflow distribution plate (7) has an eccentrically opened biased air guide hole, and the air holes in the biased airflow distribution plate (7) are evenly distributed on one side of the biased air guide hole.

10. The novel marine FGSS exhaust muffler according to claim 1, characterized in that, The inlet airflow distribution plate (3) and the inlet center air duct (4) form a first-stage scattering component; the biased air duct (5) and the biased airflow distribution plate (7) form a second-stage scattering component; and the biased air duct (6) and the biased airflow distribution plate (7) form a third-stage scattering component.

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