Main engine silencer for high-speed boat

Abstract

The utility model belongs to the field of silencers, and relates to a main engine silencer for a high-speed boat. A main engine silencer for a high-speed boat comprises a silencer main shell, and is characterized in that the silencer main shell comprises a cylindrical main body and arc-shaped end covers at the two ends of the main body, a mounting hole is formed in the arc-shaped end cover located at the right end, an air inlet pipe is inserted and fixed into the mounting hole, and an air outlet pipe is arranged at the right end of the main body. An air inlet flange is arranged at the end part of the air inlet pipe positioned outside the arc-shaped end cover, a conical silencing pot is arranged inside the main body, one end of the conical silencing pot, which is provided with a large opening, faces the air inlet pipe, the main body is also provided with an inclined air outlet pipe, and the included angle between the axis of the air outlet pipe and the axis of the main body is 55 degrees. The position of the air outlet pipe is changed, the included angle is formed between the axis of the air outlet pipe and the axis of the main body, main machine airflow enters the main body through the air inlet pipe, then enters the other side of the main body through the conical silencing cylinder and finally flows out of the air outlet pipe on the side wall of the main body, and the silencing effect is achieved.

Description

Technical Field

[0001] The utility model belongs to the field of mufflers, and particularly relates to a main engine muffler for a high-speed boat. Background Art

[0002] Last year, our company applied for a water-gas mixed wet muffler, which includes an intake mixing pipe, including an outer cooling water inlet pipe and an inner exhaust gas inlet pipe. It is necessary to mix water and gas with the exhaust gas of the main engine and then discharge it. Then it passes through a conical anti-muffling cylinder and is directly discharged from the other end of the muffler; the structure is complex, and water and gas are required to participate in the muffling of the main engine exhaust gas. Summary of the Invention

[0003] Aiming at the deficiencies of the prior art, the utility model designs a main engine muffler for a high-speed boat with a simple structure and without the participation of water.

[0004] The technical solution of the utility model is as follows:

[0005] The main engine muffler for a high-speed boat includes a main muffler housing, the main muffler housing includes a cylindrical main body and arc-shaped end caps at both ends of the main body. An installation hole is provided on the arc-shaped end cap at the right end, and an intake pipe is inserted and fixed in the installation hole. An intake flange is provided at the end of the intake pipe outside the arc-shaped end cap. A conical muffling cylinder is provided inside the main body. The large-opening end of the conical muffling cylinder faces the intake pipe. The main body is also provided with an inclined exhaust pipe, and the included angle between the axis of the exhaust pipe and the axis of the main body is 55°.

[0006] Furthermore, the axis of the intake pipe and the axis of the main body are not on the same straight line.

[0007] Furthermore, the intake pipe is located above the axis of the main body.

[0008] Furthermore, the conical muffling cylinder is coaxially arranged inside the main body, and the outer edge of the large-opening end of the conical muffling cylinder is fixedly connected to the inner wall of the main body.

[0009] Furthermore, the main muffler housing, the intake pipe, the conical muffling cylinder, and the exhaust pipe are all made of fiberglass.

[0010] Furthermore, the thickness of the intake flange is 12 mm.

[0011] In summary, the utility model has the following beneficial effects:

[0012] The utility model designs a main engine muffler for a high-speed boat, which changes the position of the air outlet pipe, so that after passing through the conical muffler cylinder, it impacts with the arc-shaped end caps at both ends of the main body. The arc-shaped end face guides the impacted air flow and spreads it around, greatly slowing down the speed of the air flow. Then, it flows along the inner wall of the main body and converges into the air outlet pipe for discharge, thereby meeting the noise reduction requirement, and there is no need to use water vapor to cool down and decelerate the air flow. Further, the conical muffler cylinder cancels out the energy of each high and low frequency exhaust sound wave by changing the air flow interface and the air cavity solvent, achieving the purpose of noise reduction. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a cross-sectional schematic diagram of the utility model;

[0014] In the figure, 1 is the main muffler housing, 10 is the main body, 11 is the arc-shaped end cap, and 110 is the mounting hole.

[0015] 2 is the air inlet pipe, and 20 is the air inlet flange.

[0016] 3 is the conical muffler cylinder.

[0017] 4 is the air outlet pipe. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] The following further illustrates the present invention in conjunction with the drawings and specific embodiments, so that those skilled in the art can better understand the present invention and be able to implement it, but the embodiments cited do not limit the present invention.

[0019] It should be noted that when an element is referred to as being "disposed on" or "fixedly disposed on" another element, it can be directly on the other element or there can also be an intermediate element. When an element is referred to as being "fixedly disposed on" another element or "fixedly connected" to another element, the connection between them can be a detachable fixing method or a non-detachable fixing method. When an element is considered to be "connected" or "rotationally connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right", "up", "down" and similar expressions are only for the purpose of illustration and do not represent the only implementation manner.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present invention belongs. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0021] In the present invention, the terms "first", "second", "third", etc. are used not to represent specific quantities and sequences, but merely for name distinction.

[0022] See Figure 1 As shown, a main engine muffler for a high-speed boat includes a main muffler housing 1. The main muffler housing 1 includes a cylindrical main body 10 and arc-shaped end caps 11 at both ends of the main body. An installation hole 110 is provided on the arc-shaped end cap at the right end. The intake pipe 2 is inserted and fixed in the installation hole 110. An intake flange 20 is provided at the end of the intake pipe 2 outside the arc-shaped end cap. A conical muffler tube 3 is provided inside the main body 10. The large-opening end of the conical muffler tube 3 faces the intake pipe 2. The main body 10 is also provided with an inclined exhaust pipe 4. The included angle between the axis of the exhaust pipe 4 and the axis of the main body is 55°. Specifically, the exhaust pipe is located at the lower end of the main body. The exhaust pipe and the intake pipe are respectively on both sides of the axis of the main body. Specifically, the intake pipe is located above the axis of the main body, and the exhaust pipe is located below the axis of the main body.

[0023] The present utility model designs a main engine muffler for a high-speed boat, and designs a main engine muffler that uses the muffler structure to muffler the exhaust of the main engine. It mainly changes the position of the exhaust pipe and arranges the axis of the exhaust pipe at an angle with the axis of the main body. The main engine air flow enters the main body through the intake pipe, then passes through the conical muffler tube and enters the other side of the main body, and finally flows out from the exhaust pipe on the side wall of the main body to achieve the muffling effect. Further, the present utility model utilizes the arc-shaped end cap of the main body, and the air flow impacts the arc-shaped end cap and disperses around, greatly slowing down the speed of the air flow and effectively reducing the speed of the air flow, thereby achieving a good muffling effect.

[0024] The axis of the intake pipe 2 is not on the same straight line as the axis of the main body 10. Specifically, the intake pipe is arranged in an offset manner. In this embodiment, the intake pipe 2 is located above the axis of the main body 1, so that the air flow entering from the intake pipe collides with the conical muffler tube and does not directly pass through the conical muffler tube, which is beneficial to slowing down the air flow speed.

[0025] The conical muffler tube 3 is coaxially arranged inside the main body 1, and the outer edge of the large-opening end of the conical muffler tube 3 is fixedly connected to the inner wall of the main body. Here, the connection structure between the conical muffler tube and the main body is defined. The two are processed separately and then fixedly bonded to the inner wall of the main body through assembly.

[0026] The main muffler housing 1, the intake pipe 2, the conical muffler tube 3, and the exhaust pipe 4 are all made of fiberglass. Being made of fiberglass effectively reduces the weight of the main engine muffler.

[0027] Furthermore, the thickness of the intake flange 20 is 12 mm. By thickening the intake flange, the structural strength of the intake flange is improved, ensuring the reliability of the connection between the muffler and other equipment.

[0028] In summary, the present utility model has the following beneficial effects:

[0029] The present utility model designs a main engine muffler for a high-speed boat, which changes the position of the exhaust pipe. After passing through the conical muffler cylinder, the exhaust gas impacts the arc-shaped end caps at both ends of the main body. The arc-shaped end face guides the impacting air flow and spreads it around, greatly reducing the speed of the air flow. Then, the air flow flows along the inner wall of the main body and converges into the exhaust pipe for discharge, thereby meeting the noise reduction requirements. Moreover, there is no need to use water vapor to cool and decelerate the air flow. Further, the conical muffler cylinder cancels out the energy of each high- and low-frequency exhaust sound wave by changing the air flow interface and the air chamber solvent, achieving the purpose of noise reduction.

[0030] Based on the described embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of the present invention.

Claims

1. Main engine muffler for high-speed boat, which includes a main muffler housing, and is characterized in that: The main muffler housing described includes a cylindrical main body and arc-shaped end caps at both ends of the main body. An installation hole is provided on the arc-shaped end cap at the right end, and the intake pipe is inserted and fixed in the installation hole. An intake flange is provided at the end of the intake pipe outside the arc-shaped end cap. A conical muffler cylinder is provided inside the main body. The large-opening end of the conical muffler cylinder faces the intake pipe. The main body is also provided with an inclined exhaust pipe, and the included angle between the axis of the exhaust pipe and the axis of the main body is 55°.

2. The main engine muffler for high-speed boats according to claim 1, characterized in that: The axis of the intake pipe and the axis of the main body are not on the same straight line.

3. The main engine muffler for high-speed boats according to claim 2, characterized in that: The intake pipe is located above the axis of the main body.

4. The main engine muffler for high-speed boats according to any one of claims 1-3, characterized in that: The conical muffler cylinder is coaxially arranged inside the main body, and the outer edge of the large-opening end of the conical muffler cylinder is fixedly connected to the inner wall of the main body.

5. The main engine muffler for a high-speed boat according to claim 4, characterized in that: The main muffler housing, intake pipe, conical muffler cylinder, and exhaust pipe are all made of fiberglass.

6. The main engine muffler for a high-speed boat according to claim 5, characterized in that: The thickness of the intake flange is 12 mm.

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