CN209688334U - A kind of air exhaust muffler device of high-pressure gas pipelines valve - Google Patents

Abstract

The utility model discloses an exhaust muffler device for a valve of a high-pressure gas pipeline, which comprises a hollow shell inside, a first muffler, a second muffler and a third muffler, the shell has an air inlet The first muffler, the second muffler and the third muffler are arranged in the housing, and the high-pressure gas passes through the first muffler, the second muffler in turn. The second muffler and the third muffler; the exhaust muffler of the utility model combines mufflers of different structures to improve the noise reduction efficiency of high-pressure gas.

Description

Exhaust muffler device for high-pressure gas pipeline valve

technical field

The utility model belongs to the technical field of noise reduction and noise reduction, in particular to an exhaust noise reduction device for a high-pressure gas pipeline valve.

Background technique

During the discharge of high-pressure gas, strong turbulent noise will be generated, causing noise pollution. Exhaust noise reduction equipment is mainly divided into throttling and decompression, small hole injection type, etc. The throttling and decompression type noise reduction equipment is based on the principle of sudden expansion throttling to achieve noise reduction, but it is difficult to control high noise, making Noise reduction is not ideal. Most of the structures of the existing noise reduction devices are bulky and complicated, and the use environment is limited.

Utility model content

The purpose of the utility model is to solve the deficiencies in the prior art and provide an exhaust muffler for high-pressure gas pipeline valves.

In order to achieve the above purpose, the technical solution adopted by the utility model is: an exhaust muffler device for a high-pressure gas pipeline valve, which includes a hollow shell inside, a first muffler, a second muffler and a third muffler body, the housing has an air inlet and an air outlet, the first muffler, the second muffler and the third muffler are arranged in the housing, and the high-pressure gas passes through the the first sound absorber, the second sound absorber and the third sound absorber;

The first muffler includes a plurality of connected cavities, the volumes of the cavities increase sequentially along the first preset direction, each of the cavities is provided with a plurality of mufflers, and the plurality of cavities The sound-absorbing plates are arranged at intervals along a second preset direction, the first preset direction is parallel to the high-pressure gas flow direction, and the first preset direction is perpendicular to the second preset direction;

The second sound-absorbing body includes a plurality of first sound-absorbing sheets and second sound-absorbing sheets, the second sound-absorbing body has a first inner sidewall and a second inner sidewall oppositely arranged, and the first sound-absorbing sheet The first sound-absorbing sheet is arranged at intervals on the first inner wall along the first preset direction, the second sound-absorbing sheet is arranged at intervals on the second inner wall along the first preset direction, and the first sound-absorbing sheet and the second sound-absorbing sheet The second sound-absorbing sheets are arranged crosswise;

The third muffler includes a plurality of corrugated deflectors arranged at intervals along the second predetermined direction, and an air channel is formed between adjacent corrugated deflectors.

The corrugated deflector is provided with a plurality of muffler holes, and the plurality of muffler holes are arranged on the corrugated deflector in a rectangular array.

Further, the sound-absorbing board includes a steel wire mesh and a board body with honeycomb holes, the steel wire mesh is covered on the outer wall of the board body, and the material of the board body is polyurethane foam.

Further, the second sound absorbing body further includes sound-absorbing fibers, and the sound-absorbing fibers are filled in the gap between the first sound-absorbing sheet and the second sound-absorbing sheet.

Further, the sound-absorbing plates adjacent to the cavity are arranged in a misaligned manner.

Further, the material of the sound-absorbing fiber is polyester cotton.

Owing to adopting above-mentioned technical scheme, the beneficial effect of the utility model is:

The exhaust muffler device of the present invention comprises a first muffler, a second muffler and a third muffler, and the high-pressure gas passes through the first muffler, the second muffler and the third muffler in sequence; The first muffler includes a number of cavities with different volumes, and each cavity is equipped with a muffler plate. When the high-pressure gas enters the first muffler, the volume of the high-pressure gas becomes larger and the density becomes smaller. , and combined with the sound-absorbing plate to reduce noise, when the gas enters the second sound-absorbing body, the first sound-absorbing sheet and the second sound-absorbing sheet intersecting each other convert sound waves into internal energy to reduce noise. Through the second muffler, the noise during exhaust is further weakened; when the gas enters the third muffler, the gas flows in multiple air channels, and the corrugated deflector changes the flow direction of the gas to absorb the kinetic energy of the gas. The gas flow rate is slowed down, and the corrugated deflector further absorbs sound waves and reduces noise. The exhaust muffler device of the utility model combines mufflers of different structures to improve the noise reduction efficiency of high-pressure gas.

Description of drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following drawings will be briefly introduced in the embodiments. It should be understood that the following drawings only show some embodiments of the present invention. Therefore, it should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained according to these drawings without creative work.

Fig. 1 is the sectional schematic diagram of the exhaust muffler device of the present utility model;

Fig. 2 is a schematic cross-sectional view of A-A direction in Fig. 1;

Fig. 3 is a schematic front view of the corrugated deflector of the exhaust muffler device of the present invention;

Fig. 4 is a schematic cross-sectional view of the sound-absorbing plate of the exhaust sound-absorbing device of the present invention;

Reference signs: 1-housing, 2-first muffler, 21-cavity, 22- muffler plate, 221-steel mesh, 222-plate body, 3-second muffler, 31-first suction Sound sheet, 32-the second sound-absorbing sheet, 33-sound-absorbing fiber, 4-the third muffler, 41-corrugated deflector, 411-the sound-absorbing hole.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the utility model more clear, the technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the utility model. Obviously, the described The embodiments are some embodiments of the present utility model, but not all embodiments. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.

Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

It should be noted that like numerals and letters denote similar items in the following figures, therefore, once an item is defined in one figure, it does not require further definition and explanation in subsequent figures.

The terms "first", "second", "third", etc. are only used for distinguishing descriptions, and should not be construed as indicating or implying relative importance.

The terms "horizontal", "vertical", "overhanging" and the like do not imply that the part is absolutely level or overhanging, but may be slightly inclined. For example, "horizontal" only means that its direction is more horizontal than "vertical", and it does not mean that the structure must be completely horizontal, but can be slightly inclined.

In conjunction with accompanying drawing 1-4, specifically illustrate the embodiment of the present utility model;

An exhaust muffler device for a high-pressure gas pipeline valve, comprising a hollow shell 1, a first muffler 2, a second muffler 3 and a third muffler 4, the shell 1 has an air inlet The first muffler 2, the second muffler 3 and the third muffler 4 are set in the housing 1, and the high-pressure gas enters the first muffler from the air inlet. In the muffler 2, it passes through the second muffler 3, reaches the third muffler 4, and finally discharges from the air outlet;

In this embodiment, the first muffler 2 includes three connected cavities 21, and the volumes of the three successively connected cavities 21 increase sequentially along the first preset direction, as shown in Fig. 1 , The radius of the cavity 21 near the air inlet is the smallest, which is the same as the radius of the high-pressure pipe; a plurality of sound-absorbing plates 22 are arranged in each cavity 21, and the plurality of sound-absorbing plates 22 are arranged along the second preset direction Arranged at intervals, there is a certain interval between adjacent sound-absorbing plates 22, and the sound-absorbing plates 22 in one cavity 21 are aligned with the gaps formed by the sound-absorbing plates 22 in adjacent cavities 21; it should be noted that the first A predetermined direction is parallel to the direction of high-pressure gas flow, and the first predetermined direction is perpendicular to the second predetermined direction;

The second sound absorbing body 3 includes a plurality of first sound absorbing sheets 31 and second sound absorbing sheets 32, the second sound absorbing body 3 has a first inner side wall and a second inner side wall arranged oppositely, and the first sound absorbing body 3 A sound-absorbing sheet 31 is arranged at intervals on the first inner wall along the first preset direction, and the second sound-absorbing sheet 32 is arranged at intervals on the second inner wall along the first preset direction. A sound-absorbing sheet 31 and the second sound-absorbing sheet 32 are arranged crosswise; the cross-arranged first sound-absorbing sheet 31 and the second sound-absorbing sheet 32 form an S-shaped flow channel, extending the distance between the other and the second sound-absorbing body 3 The contact time increases the noise reduction efficiency.

The third muffler 4 includes a plurality of corrugated deflectors 41 arranged at intervals along the second predetermined direction, and air passages are formed between adjacent corrugated deflectors 41 , and the corrugated deflectors 41 are provided with A plurality of muffler holes 411 are arranged in a rectangular array on the corrugated deflector 41 .

When exhausting, the gas enters the first muffler 2 from the air inlet, and in the first muffler 2 whose radius gradually increases, the pressure of the high-pressure gas is released, the density of the gas decreases, and Under the action of the plate 22, the noise level is initially reduced; the gas passes through the second muffler 3 and the third muffler 4 in sequence, and the noise level decreases step by step.

More preferably, the sound-absorbing panel 22 includes a steel wire mesh 221 and a board body 222 with honeycomb holes, the steel wire mesh 221 is coated on the outer wall of the board body 222, and the material of the board body 222 is polyurethane foam, porous Shaped polyurethane foam has a good effect on absorbing sound waves, and the small holes in the polyurethane foam convert sound waves into heat energy, reducing the energy of noise, thereby reducing noise noise.

More preferably, the second sound absorbing body 3 further includes sound-absorbing fibers 33, and the sound-absorbing fibers 33 are filled in the gap between the first sound-absorbing sheet 31 and the second sound-absorbing sheet 32, The material of the sound-absorbing fiber 33 is polyester cotton, and the polyurethane cotton can effectively absorb sound waves, so that the sound-absorbing effect of the second muffler 3 is better, and the noise-reducing effect is further improved.

Claims (6)

1. An exhaust muffler for a high-pressure gas pipeline valve, characterized in that: it comprises a hollow housing (1), a first muffler (2), a second muffler (3) and a third muffler A sound body (4), the housing (1) has an air inlet and an air outlet, the first sound-absorbing body (2), the second sound-absorbing body (3) and the third sound-absorbing body (4) Set in the housing (1), the high-pressure gas passes through the first muffler (2), the second muffler (3) and the third muffler (4) in sequence ; The first muffler (2) includes a plurality of connected cavities (21), the volumes of the plurality of cavities (21) increase sequentially along the first preset direction, and each of the cavities (21) ) are provided with a plurality of sound-absorbing plates (22), and the plurality of sound-absorbing plates (22) are arranged at intervals along the second predetermined direction, the first predetermined direction is parallel to the direction of high-pressure gas flow, and the second the preset direction is perpendicular to the first preset direction; The second sound-absorbing body (3) includes a plurality of first sound-absorbing sheets (31) and second sound-absorbing sheets (32), and the second sound-absorbing body (3) has first inner side walls and The second inner wall, the first sound-absorbing sheet (31) is arranged at intervals along the first preset direction on the first inner wall, and the second sound-absorbing sheet (32) is arranged at intervals along the first preset direction Located on the second inner wall, the first sound-absorbing sheet (31) and the second sound-absorbing sheet (32) are arranged crosswise; The third muffler (4) includes a plurality of corrugated deflectors (41) arranged at intervals along the second predetermined direction, and air passages are formed between adjacent corrugated deflectors (41). 2. The exhaust muffler device for high-pressure gas pipeline valves according to claim 1, characterized in that: the corrugated deflector (41) is provided with a plurality of muffler holes (411), and a plurality of mufflers The holes (411) are arranged in the corrugated deflector (41) in a rectangular array. 3. The exhaust muffler device for high-pressure gas pipeline valves according to claim 2, characterized in that: the muffler plate (22) comprises a steel wire mesh (221) and a plate body (222) with honeycomb holes, the The steel wire mesh (221) is coated on the outer wall of the plate body (222), and the material of the plate body (222) is polyurethane foam. 4. The exhaust muffler device for high-pressure gas pipeline valves according to claim 1, characterized in that: the second muffler (3) also includes sound-absorbing fibers (33), and the sound-absorbing fibers (33 ) is filled in the gap between the first sound-absorbing sheet (31) and the second sound-absorbing sheet (32). 5. The exhaust muffler device for high-pressure gas pipeline valves according to claim 1, characterized in that: the mufflers (22) adjacent to the cavity (21) are arranged in a misaligned manner. 6. The exhaust and muffler device for high-pressure gas pipeline valves according to claim 4, characterized in that: the sound-absorbing fiber (33) is made of polyester cotton.