阅读说明：本技术 一种用于航空飞机的*** (Silencer for aviation aircraft ) 是由 王松伟 王文彤 于 2019-11-29 设计创作，主要内容包括：本发明公开了一种用于航空飞机的消声器,包括内壳组件、消声外壳、封盖和螺栓；所述的内壳组件包括连接管、固定轴和管状的内壳体；所述连接管的右端设有与消声外壳相配的卡环；所述的固定轴位于内壳体的中心处；所述的内壳体的上呈阵列分布有若干个通孔；内壳体的表面从内至外依次包裹有无纺布层、滤纸层和白布层；所述的消声外壳套设在内壳体上,消声外壳的左端与卡环相卡接,消声外壳的右端与封盖相连,所述的封盖通过螺栓与固定轴相连。通过内外管的布置方式,可以有效的将噪音进行吸收,在通过内外管之间的若干层无纺布、滤纸和白布进行进一步的吸收减噪。从而获得一个较好的消声效果。(The invention discloses a silencer for an aviation aircraft, which comprises an inner shell assembly, a silencing outer shell, a sealing cover and a bolt, wherein the inner shell assembly is arranged on the outer shell; the inner shell assembly comprises a connecting pipe, a fixed shaft and a tubular inner shell; a clamping ring matched with the silencing shell is arranged at the right end of the connecting pipe; the fixed shaft is positioned at the center of the inner shell; a plurality of through holes are distributed on the inner shell in an array manner; the surface of the inner shell is wrapped with a non-woven fabric layer, a filter paper layer and a white cloth layer from inside to outside in sequence; the silencing shell is sleeved on the inner shell, the left end of the silencing shell is clamped with the clamping ring, the right end of the silencing shell is connected with the sealing cover, and the sealing cover is connected with the fixed shaft through a bolt. Through the arrangement mode of the inner pipe and the outer pipe, noise can be effectively absorbed, and the noise is further absorbed and reduced through a plurality of layers of non-woven fabrics, filter paper and white cloth between the inner pipe and the outer pipe. Thereby obtaining a better sound eliminating effect.)

1. A silencer for an aircraft is characterized by comprising an inner shell assembly, a silencing outer shell, a sealing cover and a bolt; the inner shell assembly comprises a connecting pipe, a fixed shaft and a tubular inner shell; a clamping ring matched with the silencing shell is arranged at the right end of the connecting pipe; the fixed shaft is positioned at the center of the inner shell; a plurality of through holes are distributed on the inner shell in an array manner; the surface of the inner shell is wrapped with a non-woven fabric layer, a filter paper layer and a white cloth layer from inside to outside in sequence; the silencing shell is sleeved on the inner shell, the left end of the silencing shell is clamped with the clamping ring, the right end of the silencing shell is connected with the sealing cover, and the sealing cover is connected with the fixed shaft through a bolt.

2. A muffler for an aircraft according to claim 1, wherein the muffler shell is formed from an aluminium alloy.

3. A muffler for an aircraft according to claim 1, wherein the inner housing is formed from an aluminium alloy.

4. A muffler for an aircraft according to claim 1, wherein the bolt has a hexagonal slot at its rear.

5. A muffler for an aircraft according to claim 1, wherein the thickness of the muffling enclosure is 0.8-1.2 mm.

6. A muffler for an aircraft according to claim 1, wherein the left end of the connecting pipe is a hexagonal boss, and each face of the boss is provided with a threaded hole.

Technical Field

The invention relates to a silencer for an aircraft.

Background

In the operation process of an airplane, a nozzle of the airplane can generate large noise, in the prior art, a thick plate is often adopted to isolate the noise, and the sound insulation effect is not ideal. Even adding to the weight of the body.

Especially when the aircraft takes off and lands, a large amount of waste gas is sprayed out from the nozzle to generate larger noise, thereby influencing the comfortable feeling of personnel. Therefore, how to further improve the noise elimination performance of the silencer and further reduce the noise generated by the airplane in the running state has certain practical significance.

Disclosure of Invention

The invention aims to solve the defects of the prior art and provides a silencer for an aviation aircraft.

A muffler for an aircraft includes an inner shell assembly, a sound-deadening outer shell, a cover, and a bolt; the inner shell assembly comprises a connecting pipe, a fixed shaft and a tubular inner shell; a clamping ring matched with the silencing shell is arranged at the right end of the connecting pipe; the fixed shaft is positioned at the center of the inner shell; a plurality of through holes are distributed on the inner shell in an array manner; the surface of the inner shell is wrapped with a non-woven fabric layer, a filter paper layer and a white cloth layer from inside to outside in sequence; the paper comprises a non-woven fabric layer, seven filter paper layers and six white fabric layers.

The silencing shell is sleeved on the inner shell, the left end of the silencing shell is clamped with the clamping ring, the right end of the silencing shell is connected with the sealing cover, and the sealing cover is connected with the fixed shaft through a bolt.

In order to reduce the weight of the whole silencer, the material of the silencing shell is aluminum alloy.

In order to reduce the weight of the whole silencer, the inner shell is made of aluminum alloy.

For more convenient connection, the tail part of the bolt is provided with a hexagonal groove.

In order to obtain better sound attenuation effect and balance the weight of the whole silencer, the thickness of the sound attenuation shell is 0.8-2 mm.

In order to connect the silencer at the nozzle of the airplane more conveniently, the left end of the connecting pipe is a hexagonal bulge, and each surface of the bulge is provided with a threaded hole.

Has the advantages that:

the device is arranged at the nozzle of the airplane, and when the airplane runs, the noise generated at the nozzle is gradually isolated and absorbed by the inner shell, the non-woven fabric layer, the filter paper layer, the white cloth layer and the noise elimination shell in sequence.

Through the arrangement mode of the inner pipe and the outer pipe, noise can be effectively absorbed, and the noise is further absorbed and reduced through a plurality of layers of non-woven fabrics, filter paper and white cloth between the inner pipe and the outer pipe. Thereby obtaining a better sound eliminating effect.

Drawings

FIG. 1 is a schematic view of a muffler;

FIG. 2 is an exploded view of a muffler;

1. the inner shell component 2, the silencing outer shell 3, the sealing cover 4 and the bolts.

Detailed Description

For the purpose of enhancing the understanding of the present invention, the present invention will be further described in detail with reference to the following examples and the accompanying drawings, which are only used for explaining the present invention and are not to be construed as limiting the scope of the present invention.

As shown in fig. 1-2, a muffler for an aircraft includes an inner shell assembly 1, a sound-deadening outer shell 2, a cover 3, and bolts 4; the inner shell assembly 1 comprises a connecting pipe, a fixed shaft and a tubular inner shell; the material of noise elimination shell 2 and interior casing be the aluminum alloy, the thickness of noise elimination shell 2 is 1 mm.

The left end of the connecting pipe is a hexagonal bulge, each surface of the bulge is provided with a threaded hole, and the right end of the connecting pipe is provided with a clamping ring matched with the silencing shell 2; the fixed shaft is positioned at the center of the inner shell; a plurality of through holes are distributed on the inner shell in an array manner; the surface of the inner shell is wrapped with a non-woven fabric layer, a filter paper layer and a white cloth layer from inside to outside in sequence; the silencing shell 2 is sleeved on the inner shell, the left end of the silencing shell 2 is clamped with the clamping ring, the right end of the silencing shell is connected with the sealing cover, the sealing cover 3 is connected with the fixed shaft through the bolt 4, and the tail of the bolt 4 is provided with a hexagonal groove.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.