CN215568891U

CN215568891U - Three-way silencer for rectangular air port on two sides and circular air port on one side

Info

Publication number: CN215568891U
Application number: CN202121501221.9U
Authority: CN
Inventors: 谭志华; 李振格
Original assignee: Shenzhen Zhongya Electromechanical Industrial Co ltd
Current assignee: Shenzhen Zhongya Electromechanical Industrial Co ltd
Priority date: 2021-07-02
Filing date: 2021-07-02
Publication date: 2022-01-18
Anticipated expiration: 2031-07-02

Abstract

The utility model discloses a three-way silencer of a circular air port at one side of a rectangular air port at two sides, which comprises an outer shell, wherein an upper flange neck is welded and installed in the middle of the upper end of the outer shell, a lower flange neck is welded and installed in the middle of the lower end of the outer shell, a lower flange is welded and installed at the lower end of the lower flange neck, an upper flange is welded and connected to the upper end of the upper flange neck, a side flange neck is welded and installed at one end of the outer shell, an upper closing-in is arranged at the lower side of the upper flange neck in the upper end of the outer shell, and a lower closing-in is arranged at the upper side of the lower flange neck in the lower end of the outer shell; the resistance of the airflow is reduced, the smooth passing of high-speed airflow is ensured, the aerodynamic performance of the silencer is improved, the structure, the noise reduction performance and the aerodynamic performance of the three-way silencer are optimized, and the purpose of practical application is met.

Description

Three-way silencer for rectangular air port on two sides and circular air port on one side

Technical Field

The utility model belongs to the technical field of acoustic equipment, and particularly relates to a three-way silencer of a circular air port on one side of a rectangular air port on two sides.

Background

The three-way silencer belongs to the silencer of the ventilation pipeline, and is mainly used for reducing the noise of the sound source of working equipment in the ventilation pipeline; such as boilers, turbines, etc. in the power generation sector or the effective noise emitted by thermal equipment in the mining, mechanical, metallurgical, chemical and other industries.

So far, the existing three-way silencer can effectively reduce the regeneration noise of large airflow; but the air flow resistance still has a phenomenon of larger resistance, because the inner area of the silencer has larger mutation and no flow guide body is formed; the aerodynamic performance of the silencer is reduced, and high-speed airflow cannot smoothly pass through the silencer; the expected practical application purpose of the silencer cannot be achieved, so that a three-way silencer with rectangular air openings at two sides and circular air openings at one side is provided to solve the problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to: in order to solve the problems, the three-way silencer for the circular air opening at one side of the rectangular air opening at two sides is provided.

The technical scheme adopted by the utility model is as follows: the utility model provides a three-way silencer in circular wind gap in both sides rectangle wind gap one side, includes the shell body, the upper end middle part welded mounting of shell body has the upper flange neck, the lower extreme middle part welded mounting of shell body has the lower flange neck, the lower extreme welded mounting of lower flange neck has the lower flange, the upper end welded connection of upper flange neck has the upper flange, the one end welded mounting of shell body has the side flange neck, the outer end welded connection of side flange neck has the side flange, the inside of shell body is encircleed and is provided with sound absorbing structure, the inboard of side flange neck is provided with the noise elimination baffle on the right-hand member inner wall of shell body outward, the sound guide chamber has been seted up to the inboard of shell body, the downside of upper flange neck is provided with in the inside upper end of shell body and closes up, the upside of lower flange neck closes up under the inside lower extreme that is provided with of shell body.

In a preferred embodiment, a side closing-in is arranged inside the outer shell at one end of the side flange neck close to the sound-absorbing flow conductor, the sound-absorbing flow conductor can be in a conical shape, a truncated cone shape, a triangular prism shape, a quadrangular shape, a pentagonal shape and a hexagonal shape, and the distance between the top of the sound-absorbing flow conductor and the side closing-in is 5-50 mm.

In a preferred embodiment, sound-absorbing structure includes the metal perforated plate, the inboard of metal perforated plate is provided with the one deck wire net, the inboard of wire net is provided with the one deck mat, the inboard of mat closely laminates and has the one deck sound absorption filler, the material and the thickness of metal perforated plate and the material and the thickness of shell body are the same.

In a preferred embodiment, the perforated metal plate has a perforation rate of 23% to 30%, the sound absorbing filler may be glass wool, slag wool, rock wool, micro-porous bricks and granular slag sound absorbing bricks, the mat may be glass mat, glass cloth or dense fiber cloth, the outer casing is formed by welding metal plates, the metal plates may be made of metal materials such as stainless steel plates, aluminum plates, low carbon steel plates, galvanized steel plates, copper plates and titanium plates, and the outer casing may have a thickness of 0.8 mm to 1.5 mm.

In a preferred embodiment, the upper and lower constrictions may be a generally straight orifice or a flared orifice, and the shape of the side constrictions varies according to the shape of the sound-deadening flow-guiding body.

In a preferred embodiment, the upper flange neck and the lower flange neck may be divided into a symmetrical type, an eccentric type, a variable diameter type and a same diameter type according to whether they are symmetrical or not and the overall size, a flow guide channel is formed between the sound absorbing structure and the sound absorbing baffle on one side or both sides of the inside of the eccentric type, and the width of the flow guide channel may be 20-200 mm.

In summary, due to the adoption of the technical scheme, the utility model has the beneficial effects that:

1. according to the utility model, the airflow regeneration noise is absorbed by the sound absorption structure in the silencer, a small part of the airflow regeneration noise is still reflected by the influence of the metal perforated plate in the sound absorption structure, the reflected airflow regeneration noise is injected into the sound absorption structure at the other end of the device for absorption, and then the flow silencing process is repeated by analogy, so that the integral silencing effect is greatly improved, the structure is simple, the use and the manufacture are convenient, the noise reduction effect is good, the pneumatic performance is improved, and the silencer is suitable for various three-way pipelines.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic cross-sectional view of the present invention in its entirety;

FIG. 3 is a schematic view of the overall structure of a different cuff type of the present invention;

FIG. 4 is a schematic, partially cross-sectional structural sketch of a sound absorbing structure of the present invention;

FIG. 5 is a schematic side view of an eccentric, reducing, overall of the present invention;

FIG. 6 is a schematic side view of a symmetrical, tapered monolith of the present invention;

fig. 7 is a schematic side view of an asymmetric and same-diameter type of the present invention.

The labels in the figure are: 1-upper flange, 2-upper flange neck, 3-outer shell, 4-lower flange, 5-lower flange neck, 6-side flange neck, 7-side flange, 8-upper closing-in, 9-sound absorption filler, 10-thin felt, 11-steel wire mesh, 12-metal perforated plate, 13-sound absorption structure, 14-lower closing-in, 15-sound absorption flow guide body and 16-side closing-in.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

Referring to fig. 1-7, a three-way silencer with a rectangular air port at two sides and a circular air port at one side comprises an outer shell 3, an upper flange neck 2 is welded at the middle part of the upper end of the outer shell 3, a lower flange neck 5 is welded at the middle part of the lower end of the outer shell 3, a lower flange 4 is welded at the lower end of the lower flange neck 5, an upper flange 1 is welded at the upper end of the upper flange neck 2 and is connected with a pipeline through the upper flange 1 and the lower flange 4, a side flange neck 6 is welded at one end of the outer shell 3, a side flange 7 is welded at the outer end of the side flange neck 6, when the air flow direction is two-in and one-out, air flow and carried air flow regeneration noise respectively enter the inside of the silencer from the upper flange neck 2 and the lower flange neck 5, at the moment, part of the air flow regeneration noise is absorbed by an acoustic structure 13 in the silencer, when the air flow direction is one-in and two-out, the air flow enters from the side flange neck 6, then through last flange neck 2 and lower flange neck 5 discharge shell body 3, the inside of shell body 3 is encircleed and is provided with sound-absorbing structure 13, the inboard of side flange neck 6 is provided with noise elimination baffle 15 on the right-hand member inner wall of shell body 3, can form reposition of redundant personnel and confluence through noise elimination baffle 15 with the air current, the sound guide chamber has been seted up to the inboard of shell body 3, the downside of going up flange neck 2 is provided with binding off 8 in the inside upper end of shell body 3, the upside of lower flange neck 5 is provided with binding off 14 down in the lower extreme inside of shell body 3, can be leading-in with the air current through binding off 14 down and binding off 8.

It should be noted that a side closing-in 16 is arranged inside the outer shell 3 at one end of the side flange neck 6 close to the silencing guide body 15, the silencing guide body 15 can be in a shape of a cone, a truncated cone, a prism, a rhombus, a pentaprism or a hexagon, the distance between the top of the silencing guide body 15 and the side closing-in 16 is 5-50mm, the silencing guide body 15 can be changed according to the shape change of the side closing-in 16, and the functions of shunting and converging are realized through the silencing guide body 15.

It should be noted that the sound absorbing structure 13 includes a metal perforated plate 12, the reproduced noise is reflected by the influence of the metal perforated plate 12 in the sound absorbing structure 13, the reflected airflow reproduced noise is absorbed by the sound absorbing structure 13 at the other end of the device, a layer of steel wire mesh 11 is arranged on the inner side of the metal perforated plate 12, a layer of thin felt 10 is arranged on the inner side of the steel wire mesh 11, a layer of sound absorbing filler 9 is tightly attached to the inner side of the thin felt 10, and the material and thickness of the metal perforated plate 12 are the same as those of the outer shell 3.

It should be noted that the perforation rate of the metal perforated plate 12 is between 23% and 30%, the sound absorption filler 9 can be glass wool, slag wool, rock wool, micro-porous brick and granular slag sound absorption brick, the mat 10 can be glass felt, glass cloth and compact fiber cloth, the sound absorption filler 9 and the mat 10 can absorb the generated sound, the outer shell 3 is formed by welding metal plates, the metal plates can be made of stainless steel plates, aluminum plates, low-carbon steel plates, galvanized steel plates, copper plates, titanium plates and other metal materials, the thickness of the outer shell 3 can be between 0.8 mm and 1.5mm, the assembly is convenient, and the strength of the outer shell 3 is improved.

It should be noted that the upper closing-in 8 and the lower closing-in 14 may be a normal straight mouth, or may be a bell mouth, and the shape of the side closing-in 16 changes according to the shape of the sound-deadening flow conductor 15.

It should be noted that the upper flange neck 2 and the lower flange neck 5 can be divided into a symmetrical type, an eccentric type, a reducing type and a same diameter type according to the symmetry and the whole size, a flow guide channel is formed between the sound absorption structure 13 on one side or two sides inside the eccentric type and the silencing flow guide body 15, the width of the flow guide channel can be 20-200mm, so that the whole three-way pipe can be suitable for various types of three-way pipes, and the practicability is higher.

The working principle is as follows: when the device is used, when the airflow flows in two inlets and one outlet, airflow and the carried airflow regeneration noise respectively enter the device from the upper flange neck 2 and the lower flange neck 5, at the moment, part of the airflow regeneration noise is absorbed by the sound absorption structure 13 in the silencer, a small part of the airflow regeneration noise is still reflected under the influence of the metal perforated plate 12 in the sound absorption structure 13, the reflected airflow regeneration noise is injected into the sound absorption structure 13 at the other end of the device for absorption, the silencing process is circularly continued, the airflow and the carried airflow regeneration noise are converged under the guidance of the silencing guide body 15 and are discharged out of the outer shell 3 through the side flange neck 6, a flowing silencing process is completed, the flowing silencing process is repeated by analogy, and the integral silencing effect is greatly improved.

If the air flow direction is one inlet and two outlets, the air flow flows in from the side flange neck 6, then the flow silencing process is basically consistent with the process, and the difference is that the air flow can be smoothly divided under the action of the silencing flow guide body 15, passes through the inner part of the device, and then is discharged out of the outer shell 3 through the upper flange neck 2 and the lower flange neck 5.

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 utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides a three-way silencer in circular wind gap in both sides rectangle wind gap one side, includes shell body (3), its characterized in that: an upper flange neck (2) is welded and installed in the middle of the upper end of the outer shell (3), a lower flange neck (5) is welded and installed in the middle of the lower end of the outer shell (3), a lower flange (4) is welded and installed in the lower end of the lower flange neck (5), an upper flange (1) is welded and connected in the upper end of the upper flange neck (2), a side flange neck (6) is welded and installed in one end of the outer shell (3), a side flange (7) is welded and connected in the outer end of the side flange neck (6), a sound absorption structure (13) is arranged around the inside of the outer shell (3), a sound absorption guide body (15) is arranged on the inner wall of the right end of the outer shell (3) on the inner side of the side flange neck (6), a sound guide cavity is formed in the inner side of the outer shell (3), an upper closing-in opening hole (8) is arranged inside the upper end of the outer shell (3) on the lower side of the upper flange neck (2), and a lower closing-in (14) is arranged on the upper side of the lower flange neck (5) in the lower end of the outer shell (3).

2. The three-way silencer for the circular tuyere on one side of the rectangular tuyere on two sides of the claim 1, characterized in that: the side flange neck (6) is close to one end of the silencing flow guide body (15) and is provided with a side closing-in opening (16) in the outer shell (3), the silencing flow guide body (15) can be conical, truncated cone-shaped, triangular prism-shaped, quadrangular and hexagonal, and the distance between the top of the silencing flow guide body (15) and the side closing-in opening (16) is 5-50 mm.

3. The three-way silencer for the circular tuyere on one side of the rectangular tuyere on two sides of the claim 1, characterized in that: sound-absorbing structure (13) include metal perforated plate (12), the inboard of metal perforated plate (12) is provided with one deck wire net (11), the inboard of wire net (11) is provided with one deck mat (10), the inboard of mat (10) is closely laminated and is had one deck sound absorption filler (9), the material and the thickness of thickness and shell body (3) of metal perforated plate (12) are the same with thickness.

4. The three-way silencer for the circular tuyere at one side of the rectangular tuyere at two sides of the claim 3, wherein: the perforated rate of the metal perforated plate (12) is between 23% and 30%, the sound absorption filler (9) can be glass wool, slag wool, rock wool, micro-porous bricks and granular slag sound absorption bricks, the thin felt (10) can be glass felt, glass cloth and compact fiber cloth, the outer shell (3) is formed by welding metal plates, the metal plates can be made of stainless steel plates, aluminum plates, low-carbon steel plates, galvanized steel plates, copper plates, titanium plates and other metal materials, and the thickness of the outer shell (3) can be between 0.8 mm and 1.5 mm.

5. The three-way silencer for the circular tuyere at one side of the rectangular tuyere at two sides as claimed in claim 2, wherein: the upper closing opening (8) and the lower closing opening (14) can be ordinary straight openings or bell openings, and the shape of the side closing opening (16) is changed according to the shape of the sound attenuation flow guide body (15).

6. The three-way silencer for the circular tuyere on one side of the rectangular tuyere on two sides of the claim 1, characterized in that: the upper flange neck (2) and the lower flange neck (5) can be divided into a symmetrical type, an eccentric type, a variable diameter type and a same diameter type according to the symmetry and the whole size, a flow guide channel is formed between the sound absorption structure (13) on one side or two sides in the eccentric type and the silencing flow guide body (15), and the width of the flow guide channel can be 20-200 mm.