CN218030834U

CN218030834U - Silencing device

Info

Publication number: CN218030834U
Application number: CN202222280407.7U
Authority: CN
Inventors: 冯垚垚
Original assignee: Xian Shaangu Power Co Ltd
Current assignee: Xian Shaangu Power Co Ltd
Priority date: 2022-08-29
Filing date: 2022-08-29
Publication date: 2022-12-13
Anticipated expiration: 2032-08-29

Abstract

The utility model provides an silencing device, the power distribution box comprises a box body, establish the installation cavity in the box, set up air inlet and gas outlet on the box, set up a plurality of first acoustical boards in the installation cavity, still including a plurality of second acoustical boards of locating the installation cavity, each second acoustical board and first acoustical board, form airflow channel between the box lateral wall, the utility model discloses an silencing device, compressed air can get into the box through the air inlet in, through airflow channel and first acoustical board and second acoustical board contact, fall the treatment of making an uproar with high frequency noise through the first acoustical board of box, fall the treatment of making an uproar with low frequency noise through the second acoustical board, fall the treatment of making an uproar with the gas of air inlet under the combined action of first acoustical board and second acoustical board, it is little through gas outlet combustion gas noise, and the silencing device structure of this embodiment is retrencied, and it is big to fall the scope of making an uproar, and the gas of discharging is little to environmental pollution behind this device.

Description

Silencing device

Technical Field

The utility model belongs to amortization structure field, concretely relates to silencing device.

Background

In the industrial production fields of steel smelting, petrochemical industry and the like, a centrifugal compressor is widely used for compressing air, nitrogen, oxygen and the like, and the compressed gas discharged periodically generates great noise during gas discharge due to large pressure and high flow velocity, so that the health of workers is harmed. The noise spectrum range is large when the noise is discharged, and the noise reduction treatment by using a single-performance silencer is difficult.

Disclosure of Invention

Not enough to prior art exists, the utility model aims to provide a silencing device solves the problem that prior art exists.

In order to solve the technical problem, the utility model discloses a following technical scheme realizes:

the utility model provides a silencing device, includes the box, establishes the installation cavity in the box, sets up air inlet and gas outlet on the box, sets up a plurality of first acoustical boards in the installation cavity, still including locating a plurality of second acoustical boards of installation cavity, forms airflow channel between each second acoustical board and first acoustical board, the box lateral wall.

Preferably, each first silencing plate is arranged along the circumferential direction of the side wall of the box body and connected with the upper wall and the lower wall of the box body, an air flow channel is formed between the first silencing plates, the first silencing plate is close to the side wall of the box body, the air flow channel is formed between the first silencing plate and the side wall of the box body, each second silencing plate is arranged in a cavity formed by circumferential enclosing of the first silencing plate, the first silencing plate is far away from one side of the side wall of the box body, the air flow channel is formed between the second silencing plates, and the air flow channel is formed between the second silencing plate close to the first silencing plate and the first silencing plate.

Preferably, the first sound-absorbing plate is a microperforated plate, and the second sound-absorbing plate is a resistive sound-absorbing sheet.

Preferably, the silencing device further comprises a silencing cylinder, an opening is formed in the silencing cylinder, the box body is arranged on the silencing cylinder and communicated with the silencing cylinder through the opening, the air inlet is formed in the wall of the silencing cylinder, and the air outlet is formed in the upper wall of the box body, far away from one side of the silencing cylinder.

Preferably, the silencing device further comprises a rainproof plate, the rainproof plate is connected with the box body through a supporting rod, and an orthographic projection of the rainproof plate on the box body covers the air outlet.

Preferably, a connecting plate is arranged between the silencing cylinder and the box body, a vent hole is formed in the connecting plate and communicated with the opening, and a plurality of supporting rods are arranged between the connecting plate and the silencing cylinder along the circumferential direction of the silencing cylinder.

Preferably, a base is arranged at one end, far away from the box body, of the silencing barrel.

Preferably, a water outlet is arranged on the base, and a filter screen and a valve are arranged on the water outlet.

Preferably, the silencing barrel is provided with an access hole.

Preferably, each second sound-absorbing plate is connected with the upper wall of the box body through a connecting piece, and the connecting piece is fixed on the box body through a bolt.

Compared with the prior art, the utility model, following technological effect has:

(I) the utility model discloses an silencing device, compressed air can get into the box through the air inlet in, through airflow channel and first noise reduction piece and the contact of second noise reduction piece, fall the high frequency noise and fall the treatment of making an uproar through the first noise reduction piece of box, fall the treatment of making an uproar with the low frequency noise through the second noise reduction piece, fall the treatment of making an uproar with the gas of air inlet under the combined action of first noise reduction piece and second noise reduction piece, through gas outlet combustion gas small in noise, the utility model discloses an silencing device structure retrencies, and the scope of making an uproar is big, and the gas of discharging is little to environmental pollution after falling an uproar through this device.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a front view of the present invention;

fig. 3 is a cross-sectional view of the present invention;

FIG. 4 is a schematic view of the internal structure of the case of the present invention;

FIG. 5 is a schematic view of the internal structure of the case of the present invention;

fig. 6 is a schematic view of the water outlet structure of the present invention.

The meaning of the individual reference symbols in the figures is:

1-a box body, 2-an air inlet, 3-an air outlet, 4-a first sound-absorbing plate, 5-a second sound-absorbing plate, 6-an airflow channel, 7-a sound-absorbing barrel, 8-a rain-proof plate, 9-a support rod, 10-a connecting plate, 11-a support rod, 12-a base, 13-a water outlet, 14-a filter screen, 15-a valve, 16-an inspection opening and 17-a connecting piece.

The following examples are provided to explain the present invention in further detail.

Detailed Description

The following embodiments of the present invention are given, and it should be noted that the present invention is not limited to the following embodiments, and the equivalent transformations made on the basis of the technical solution of the present invention all fall into the protection scope of the present invention.

Directional terms as referred to herein, such as "circumferential", "axial", "upper" and "lower", are intended to correspond to a particular direction on the page in the drawings or to a corresponding direction in space as shown in the drawings.

Example (b):

the utility model provides a silencing device, includes box 1, establishes the installation cavity in the box 1, and relative both sides set up air inlet 2 and gas outlet 3 on the box, set up a plurality of first acoustical boards 4 in the installation cavity, still including locating a plurality of second acoustical boards 5 of installation cavity, form airflow channel between each second acoustical board 5 and first acoustical board 4, the 1 lateral wall of box.

The silencing device of this embodiment, compressed air can get into the box through the air inlet, contact through airflow channel and first noise reduction piece and second noise reduction piece, the treatment of making an uproar falls with well low frequency noise through the first noise reduction piece of box, fall the treatment of making an uproar with high frequency noise through the second noise reduction piece, fall the treatment of making an uproar with the gas of air inlet under the combined action of first noise reduction piece and second noise reduction piece, little through gas outlet combustion gas noise, the silencing device structure of this embodiment is retrencied, it is big to fall the scope of making an uproar, it is little to environmental pollution to fall the gas of back emission of making an uproar through this device.

The embodiment adopts the first noise elimination piece to adopt the microperforated panel, can effectual absorption medium and low frequency noise, and the second noise elimination piece adopts resistive noise elimination piece, can effectual absorption high frequency noise. The micro-perforated plate in this embodiment is a double layer, and the number of resistive muffling sheets is three.

As a preferable scheme of the present embodiment, each of the first sound-absorbing plates 4 is disposed along a circumferential direction of a side wall of the housing 1 and connected to upper and lower walls of the housing 1, an air flow passage 6 is formed between each of the first sound-absorbing plates 4, an air flow passage 6 is formed between the first sound-absorbing plate 4 close to the side wall of the housing 1 and the side wall of the housing 1, each of the second sound-absorbing plates 5 is disposed in a cavity formed by circumferentially enclosing the first sound-absorbing plate 4 far from the side wall of the housing 1, an air flow passage 6 is formed between each of the second sound-absorbing plates 5, and an air flow passage 6 is formed between the second sound-absorbing plate 5 close to the first sound-absorbing plate 4 and the first sound-absorbing plate 4.

The first silencing plate 4 is circumferentially arranged along the side wall of the box body 1 and connected with the upper wall and the lower wall of the box body 1, so that the contact area between the gas and the first silencing plate 4 can be increased, the gas enters the box body through the airflow channel and is fully contacted with the first silencing plate and the second silencing plate, and the noise reduction effect of the embodiment is further improved.

As a preferable solution of this embodiment, the first sound-absorbing plate is a microperforated plate, and the second sound-absorbing plate is a resistive sound-absorbing sheet.

As a preferable scheme of this embodiment, the silencing device further includes a silencing cylinder 7, the silencing cylinder 7 is provided with an opening, the box body 1 is arranged on the silencing cylinder 7 and is communicated with the silencing cylinder 7 through the opening, the air inlet 2 is arranged on a wall of the silencing cylinder 7, and the air outlet 3 is arranged on an upper wall of the box body 1 on one side far away from the silencing cylinder 7.

Wherein, the silencing pot 7 is a cement structure silencing pot, reduces the impact noise of the gas flowing into the gas inlet 2, and leads the gas to flow to the box body 1 along the internal channel of the silencing pot 7.

As a preferred scheme of this embodiment, silencing device still includes flashing board 8, and flashing board 8 passes through vaulting pole 9 with box 1 and is connected, and the orthographic projection of flashing board 8 on the box covers gas outlet 3.

Wherein, set up flashing board 8 and can effectually shelter from gas outlet 3, prevent that the rainwater from 3 entering from the gas outlet and soaking first acoustical panel and second acoustical panel, prevent that the silencing device of this embodiment from reducing at rainwater weather noise cancelling effect.

As a preferable scheme of this embodiment, a connecting plate 10 is disposed between the muffling barrel 7 and the box body 1, the connecting plate 10 is provided with a vent hole and is communicated with the opening, and a plurality of support rods 11 are disposed between the connecting plate 10 and the muffling barrel 7 along the circumferential direction of the muffling barrel 7.

Wherein, the connection stability of a section of thick bamboo of eliminating noise and box can be strengthened with bracing piece 11 office to connecting plate 10, promotes the overall stability of this embodiment device.

As a preferable scheme of this embodiment, a base 12 is disposed on one end of the muffling cylinder 7 away from the box 1.

Wherein, the base 12 is arranged at the bottom of the device of the embodiment, so as to further improve the overall stability of the device of the embodiment.

As a preferable scheme of this embodiment, a drainage port 13 is provided on a wall of the muffling cylinder 7 on a side away from the box body 1, and a filter 14 and a valve 15 are provided on the drainage port 13.

The filter screen can filter impurities in water, and the valve is used for controlling the opening and closing of the water outlet.

The working process of the embodiment is as follows:

compressed gas enters the box body 1 from the air inlet, flows between the first silencing plate and the second silencing plate through the air flow channel, noise reduction treatment is carried out on high-frequency noise in the compressed gas through the first silencing plate, noise reduction treatment is carried out on low-frequency noise in the compressed gas through the second silencing plate, and the compressed air subjected to noise reduction is discharged from the air outlet.

Claims

1. The utility model provides a silencing device, includes box (1), establishes the installation cavity in box (1), and relative both sides set up air inlet (2) and gas outlet (3) on the box, set up a plurality of first acoustical panel (4) in the installation cavity, its characterized in that, still including a plurality of second acoustical panel (5) of locating the installation cavity, form airflow channel between each second acoustical panel (5) and first acoustical panel (4), box (1) lateral wall.

2. The sound-deadening apparatus according to claim 1, wherein each of the first sound-deadening plates (4) is disposed along a circumferential direction of a side wall of the casing (1) and is connected to upper and lower walls of the casing (1), an air flow passage (6) is formed between the first sound-deadening plates (4) adjacent to the side wall of the casing (1) and the side wall of the casing (1), each of the second sound-deadening plates (5) is disposed in a cavity defined by the circumferential direction of the first sound-deadening plate (4) on a side away from the side wall of the casing (1), the air flow passage (6) is formed between the second sound-deadening plates (5), and the air flow passage (6) is formed between the second sound-deadening plate (5) adjacent to the first sound-deadening plate (4) and the first sound-deadening plate (4).

3. The acoustic abatement apparatus of claim 2, wherein the first panel comprises a microperforated panel and the second panel comprises a resistive panel.

4. The silencing apparatus according to claim 1, wherein the silencing apparatus further comprises a silencing barrel (7), the silencing barrel (7) is provided with an opening, the box body (1) is arranged on the silencing barrel (7) and communicated with the silencing barrel (7) through the opening, the air inlet (2) is arranged on the barrel wall of the silencing barrel (7), and the air outlet (3) is arranged on the upper wall of the box body (1) at the side far away from the silencing barrel (7).

5. The silencer device according to claim 1, further comprising a rain shield (8), wherein the rain shield (8) is connected with the box body (1) through a support rod (9), and an orthographic projection of the rain shield (8) on the box body covers the air outlet (3).

6. A silencer according to claim 4, characterized in that a connecting plate (10) is arranged between the silencer casing (7) and the box body (1), the connecting plate (10) is provided with vent holes and communicated with the openings, and a plurality of support rods (11) are arranged between the connecting plate (10) and the silencer casing (7) along the circumferential direction of the silencer casing (7).

7. A silencer device according to claim 4, characterized in that a base (12) is arranged at the end of the silencer cartridge (7) remote from the tank (1).

8. The silencing apparatus according to claim 7, wherein the base (12) is provided with a drain opening (13), and the drain opening (13) is provided with a filter (14) and a valve (15).

9. A silencer device according to claim 4, characterized in that the silencer cartridge (7) is provided with an access opening (16).

10. A sound-damping arrangement as claimed in claim 2, characterized in that the second sound-damping panels (5) are connected to the upper wall of the cabinet (1) by means of connecting elements (17), the connecting elements (17) being fastened to the cabinet (1) by means of bolts.