Marine water-gas mixing silencer

Abstract

The utility model relates to the technical field of silencers, in particular to a marine water-gas mixing silencer which comprises a silencer body, the top of the silencer body is communicated with a gas inlet pipe, the top of the gas inlet pipe is connected with a flange, the side wall of the silencer body is communicated with a water storage box, and the water storage box is connected with a water inlet pipe. A screen frame is fixed in the silencer body, a detachable secondary screen is clamped in the screen frame, and the bottom of the silencer body communicates with a conical exhaust pipe. According to the marine water-gas mixing silencer, low-temperature gas is fed into the silencer body to be mixed with high-temperature tail gas of an engine rushed into the silencer through the gas inlet pipe for heat exchange, heat of the high-temperature gas is absorbed by atomized cooling water, and then the size is reduced, so that noise is reduced; and high-frequency and low-frequency sound wave energy collides and counteracts each other by increasing and reducing the air circulation sectional area in the silencer, so that the effect of reducing noise is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of mufflers, in particular to a marine water-air mixing muffler. Background Art

[0002] Marine water vapor muffler is an important component of ship exhaust system, which is used to reduce the noise generated in the exhaust pipe, thereby ensuring the environmental friendliness and safety of the ship. The main function of the muffler is to reduce the noise generated in the exhaust pipe by slowing down and expanding the exhaust airflow.

[0003] As auxiliary power for small and medium-sized ships, diesel engines are the main source of electricity on ships. However, the huge exhaust noise of diesel engines seriously affects the user experience of shipboard personnel, and high-temperature gas can easily cause other accidents, posing a huge safety hazard.

[0004] Muffler is the most commonly used device for reducing noise. It can effectively reduce noise through optimized design. Currently, most of the mufflers on the market are dry type. However, dry type mufflers are not only large in size and heavy in weight, but also have limited noise reduction effect. At the same time, they cannot avoid safety hazards such as high temperature, and most of them are directly connected through flanges. However, ships move at sea for a long time, and the muffler is always in use. It is easy to loosen after long-term use, which makes the muffler connection not tight, thus affecting the stability of use and the noise reduction effect is not good. Utility Model Content

[0005] The purpose of the utility model is to provide a marine water-air mixing muffler to solve the problem that the existing muffler has poor noise reduction effect and is easy to loosen after long-term use as mentioned in the above background technology. To achieve the above purpose, the utility model provides the following technical solutions: a marine water-air mixing muffler, including a muffler body, the top of the muffler body is connected to an air intake pipe, the top of the air intake pipe is connected to a flange, the side wall of the muffler body is connected to a water storage box, a mesh frame is fixed inside the muffler body, a detachable secondary screen is clamped inside the mesh frame, and the bottom of the muffler body is connected to a conical exhaust pipe.

[0006] Preferably, a sealing ring is fixed to the outside of the flange, and two sealing rings are provided, and the two sealing rings are detachably arranged.

[0007] Preferably, a screw hole is provided inside the sealing ring, a bolt is threadedly connected to the middle of the screw hole, and a nut is threadedly connected to the outer side of the bolt.

[0008] Preferably, the end side of the water storage box is connected to a water inlet pipe, and a primary screen is installed on the inner side of the water storage box.

[0009] Preferably, blocks are fixed at both ends of the secondary screen, an annular groove is provided on the surface of the block, a control rod is slidably connected in the middle of the annular groove, and an insertion rod is fixed at the bottom of the control rod.

[0010] Preferably, two of the insertion rods are provided, a spring is fixedly connected between the two insertion rods, and a slot for inserting with the insertion rod is provided inside the mesh frame.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] In the utility model, low-temperature cooling is sent into the interior of the muffler body for mixed heat exchange with the high-temperature exhaust gas of the engine that rushes into the muffler through the intake pipe. The heat of the high-temperature gas is absorbed by the atomized cooling water, and the volume is reduced to reduce the noise. The increase and reduction of the air flow cross-sectional area in the muffler are used to cancel out the collision of high and low frequency sound wave energies, thereby achieving the effect of reducing noise.

[0013] In the utility model, a sealing reinforcement ring is arranged at the connection between the flange and the engine exhaust pipe, and the sealing reinforcement ring is used to reinforce and seal the flange, thereby preventing the flange from loosening after long-term use and thus affecting the stable use of the muffler. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 For the utility model Figure 1 Schematic diagram of the connection structure between the middle flange and the sealing ring;

[0016] Figure 3 For the utility model Figure 1 Schematic diagram of the connection between the middle screen frame and the secondary screen;

[0017] Figure 4 For the utility model Figure 3 Enlarged structural diagram at A in the middle.

[0018] In the figure:

[0019] 1. Muffler body;

[0020] 2. Intake pipe;

[0021] 3. Flange; 31. Sealing ring; 32. Screw hole; 33. Bolt; 34. Nut;

[0022] 4. Water storage box; 41. Water inlet pipe; 42. Primary screen;

[0023] 5. Screen frame;

[0024] 6. Secondary screen; 61. Block; 62. Annular groove; 63. Control rod; 64. Insert rod; 65. Spring;

[0025] 7. Conical exhaust pipe. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technical personnel in this field without creative work are within the scope of protection of the utility model.

[0027] See also Figures 1 to 4 The utility model provides a technical solution: a marine water-gas mixing muffler, comprising a muffler body 1, the top of the muffler body 1 is connected to an air intake pipe 2, the top of the air intake pipe 2 is connected to a flange 3, the side wall of the muffler body 1 is connected to a water storage box 4, a mesh frame 5 is fixed inside the muffler body 1, a detachable secondary screen 6 is clamped inside the mesh frame 5, and the bottom of the muffler body 1 is connected to a conical exhaust pipe 7.

[0028] It should be noted that the tapered exhaust pipe 7 reduces the energy of sound waves by changing the flow cross-sectional area.

[0029] In this embodiment, Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a sealing ring 31 is fixed to the outside of the flange 3, and two sealing rings 31 are provided, and the two sealing rings 31 are detachably arranged.

[0030] In this embodiment, Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a screw hole 32 is provided inside the sealing ring 31 , a bolt 33 is threadedly connected to the middle of the screw hole 32 , and a nut 34 is threadedly connected to the outer side of the bolt 33 .

[0031] In this embodiment, Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the end side of the water storage box 4 is connected to a water inlet pipe 41 , and a primary screen 42 is installed inside the water storage box 4 .

[0032] In this embodiment, Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, blocks 61 are fixed at both ends of the secondary screen 6 , an annular groove 62 is formed on the surface of the block 61 , a control rod 63 is slidably connected in the middle of the annular groove 62 , and an insertion rod 64 is fixed at the bottom of the control rod 63 .

[0033] In this embodiment, Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, two insertion rods 64 are provided, a spring 65 is fixedly connected between the two insertion rods 64 , and a slot for inserting the insertion rods 64 is provided inside the mesh frame 5 .

[0034] It should be noted that the outer periphery of the muffler body is wrapped with sound-absorbing and heat-insulating cotton, which can further isolate the transmission of heat and noise, and reduce the noise through the sound-absorbing and heat-insulating surface. Since this technical solution belongs to the existing technology in this field, it will not be described in detail.

[0035] The use method and advantages of the utility model: When the marine water-gas mixing muffler is working, the working process is as follows:

[0036] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the flange 3 is connected to the engine exhaust pipe, and then the sealing ring 31 at one end is fitted with the other sealing ring 31, and the through bolt 33 is embedded in the screw hole 32 inside it, and the rotating nut 34 is rotated along the bolt 33, so that the nut 34 is then rotated to the side wall of the sealing ring 31 to fit and fix it, so that the sealing reinforcement ring reinforces and seals the connection between the flange 3 and the engine exhaust pipe to avoid loosening after long-term use, thereby affecting the stable use of the muffler;

[0037] During silencing, the high-temperature exhaust gas of the engine quickly rushes into the interior of the muffler body 1 through the intake pipe 2, and the low-temperature cold water enters the water storage box 4 through the water inlet pipe 41. The low-temperature cooling water in the water storage box 4 flows through the primary screen 42 and is atomized before entering the interior of the muffler body 1. The low-temperature cooling water mixes with the high-temperature exhaust gas for heat exchange, and the mixed water vapor is mixed again through the secondary screen 6. The remixed part of the water vapor is finally mixed with the mixed water vapor through reflection in the conical exhaust pipe 7 and is discharged through the bottom of the conical exhaust pipe 7. Due to the principle of thermal expansion and contraction of gas, the heat of the high-temperature gas is absorbed by the atomized cooling water and its volume is greatly reduced, and the noise generated is greatly reduced. At the same time, the increase and reduction of the air flow cross-sectional area in the muffler body 1 is used to offset the collision of high and low frequency sound wave energies, thereby achieving the effect of reducing noise. Finally, the sound-absorbing and heat-insulating cotton wrapped on the outside of the muffler body 1 further isolates the transmission of heat and noise.

[0038] The secondary screen 6 will be blocked by impurities in the exhaust gas after long-term use. When disassembling, press the two control rods 63 with both hands and slide them inward in the same direction in the annular groove 62. When the control rod 63 slides, the bottom will slide inward and squeeze the spring 65. The insertion rod 64 slides into the block 61 and then detaches from the screen frame 5, so that the screen frame 5 and the secondary screen 6 can be quickly disassembled to avoid blockage during long-term use and thus affect the silencing effect.

[0039] The above shows and describes the basic principle, main features and advantages of the utility model. Technical staff in this industry should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A marine water-air mixing muffler, comprising a muffler body (1), characterized in that: The top of the muffler body (1) is connected to an air intake pipe (2), the top of the air intake pipe (2) is connected to a flange (3), the side wall of the muffler body (1) is connected to a water storage box (4), a mesh frame (5) is fixed inside the muffler body (1), a detachable secondary screen (6) is clamped inside the mesh frame (5), and the bottom of the muffler body (1) is connected to a conical exhaust pipe (7).

2. A marine water-air mixing muffler according to claim 1, characterized in that: A sealing ring (31) is fixed to the outside of the flange (3), and two sealing rings (31) are provided. The two sealing rings (31) are detachably arranged.

3. A marine water-air mixing muffler according to claim 2, characterized in that: A screw hole (32) is provided inside the sealing ring (31), a bolt (33) is threadedly connected to the middle of the screw hole (32), and a nut (34) is threadedly connected to the outside of the bolt (33).

4. A marine water-air mixing muffler according to claim 1, characterized in that: The end side of the water storage box (4) is connected to a water inlet pipe (41), and a primary screen (42) is installed inside the water storage box (4).

5. A marine water-air mixing muffler according to claim 1, characterized in that: Blocks (61) are fixed at both ends of the secondary screen (6), an annular groove (62) is provided on the surface of the block (61), a control rod (63) is slidably connected in the middle of the annular groove (62), and an insertion rod (64) is fixed at the bottom of the control rod (63).

6. A marine water-air mixing muffler according to claim 5, characterized in that: Two inserting rods (64) are provided, a spring (65) is fixedly connected between the two inserting rods (64), and a slot for inserting the inserting rods (64) is provided inside the net frame (5).

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