CN108571635B

CN108571635B - High-pressure large-flow spherical silencer

Info

Publication number: CN108571635B
Application number: CN201710136281.7A
Authority: CN
Inventors: 黄福友; 王青宇; 刘忠明; 何燚; 陈世超; 陈山; 文小平
Original assignee: China Academy of Launch Vehicle Technology CALT; Beijing Institute of Space Launch Technology
Current assignee: China Academy of Launch Vehicle Technology CALT; Beijing Institute of Space Launch Technology
Priority date: 2017-03-09
Filing date: 2017-03-09
Publication date: 2020-03-03
Anticipated expiration: 2037-03-09
Also published as: CN108571635A

Abstract

The invention relates to a high-pressure large-flow spherical silencer, which comprises a tubular silencing piece and a spherical silencing piece, wherein a sleeve communicated with a spherical inner cavity of the spherical silencing piece is arranged on the right side of the spherical silencing piece; the tubular silencing piece is provided with a plurality of first silencing holes in the peripheral wall of the inner cavity of the spherical silencing piece, and the peripheral wall of the spherical silencing piece is provided with a plurality of second silencing holes. The invention has the advantages of simple structure, good noise reduction effect and wide adaptive pressure range, can be widely applied to the discharge and the exhaust of various high-low pressure gas supply systems and valves, and can effectively reduce the flow resistance and the volume displacement ratio, thereby ensuring the discharge efficiency.

Description

High-pressure large-flow spherical silencer

Technical Field

The invention relates to a silencing device, in particular to a spherical silencing and noise-reducing device for high-pressure and low-pressure gas supply systems and large-flow discharge of electromagnetic valves.

Background

The air supply system usually generates large noise when being discharged, and particularly, the noise generated by the discharge of the high-pressure air supply system is usually over 100 dB. When the device works and lives in the noise environment for a long time, the spirit and the hearing of people are greatly damaged, and even certain work can not be smoothly carried out due to overlarge noise. In order to reduce noise pollution, the prior art generally adopts a silencer arranged at a discharge port to achieve the purposes of silencing and reducing noise. However, the existing muffler generally has the problems of large volume and low efficiency, and is only suitable for a low-pressure air supply system, but the emission of the high-pressure air supply system cannot reach the purpose of effective noise reduction, and the application range is limited to a certain extent.

Disclosure of Invention

The invention aims to provide a high-pressure large-flow spherical silencer which has the advantages of simple structure, good noise reduction effect and wide adaptive pressure range, can be widely applied to the discharge and exhaust of various high-pressure and low-pressure air supply systems and valves, and can effectively reduce the flow resistance and the volume-discharge ratio, thereby ensuring the discharge efficiency.

In order to solve the problems of larger volume, lower efficiency and inapplicability to the discharge of a high-pressure gas supply system of the silencer in the prior art, the invention provides a high-pressure large-flow spherical silencer, which comprises a tubular silencing piece and a spherical silencing piece, wherein a sleeve communicated with a spherical inner cavity of the spherical silencing piece is arranged on the right side of the spherical silencing piece; the tubular silencing piece is provided with a plurality of first silencing holes in the peripheral wall of the inner cavity of the spherical silencing piece, and the peripheral wall of the spherical silencing piece is provided with a plurality of second silencing holes.

Further, the high-pressure large-flow spherical silencer is characterized in that the right end of the tubular silencing piece is located on the outer side of the sleeve, a hexagonal head is arranged on the outer side wall of the right end of the tubular silencing piece, and internal threads are arranged on the inner side wall of the right end of the tubular silencing piece.

Further, the high-pressure large-flow spherical silencer is characterized in that a first silencing layer is wrapped on the outer side of the peripheral wall of the tubular silencing piece in the inner cavity of the spherical silencing piece, the first silencing layer covers all the first silencing holes, and the first silencing layer is made of a porous material.

Further, the spherical silencer with high pressure and large flow rate is characterized in that a second silencing layer is wrapped on the outer side of the peripheral wall of the spherical silencing piece and covers all the second silencing holes, and the second silencing layer is made of a porous material.

Further, the high-pressure large-flow spherical silencer provided by the invention is characterized in that the second silencing layer extends to the outer side of the sleeve, a protective fixing net is arranged on the outer side of the second silencing layer, and a fixing ring is arranged on the outer side of the protective fixing net and in a position corresponding to the sleeve.

Further, the high-pressure large-flow spherical silencer is characterized in that the first silencing holes are uniformly distributed on the peripheral wall of the tubular silencing piece, and an expansion structure with a small inside and a large outside is adopted.

Further, the high-pressure large-flow spherical silencer is characterized in that the second silencing holes are uniformly distributed on the peripheral wall of the spherical silencing piece, and an expansion structure with a small inside and a large outside is adopted.

Compared with the prior art, the high-pressure large-flow spherical silencer has the following advantages: the spherical silencer is provided with the tubular silencer and the spherical silencer, the sleeve communicated with the spherical inner cavity of the spherical silencer is arranged on the right side of the spherical silencer, the tubular silencer penetrates through the sleeve, the outer side wall of the tubular silencer is fixedly connected with the inner side wall of the sleeve in a sealing mode, the left end of the tubular silencer is closed and is positioned in the inner cavity of the spherical silencer, the right end of the tubular silencer is opened, the peripheral wall of the tubular silencer, which is positioned in the inner cavity of the spherical silencer, is provided with the first silencing holes, and the peripheral wall of the spherical silencer is provided with the second silencing holes. Therefore, the high-pressure large-flow spherical silencer with simple structure, good noise reduction effect and wide adaptive pressure range is formed. In practical application, the right end of the tubular silencing piece is connected with a discharge pipe or a valve of an air supply system, in the process of discharging and exhausting, a fluid medium firstly passes through a first silencing hole on the peripheral wall of the tubular silencing piece to perform primary uniform distribution and silencing of pressure and flow, then enters between the tubular silencing piece and the spherical silencing piece, and passes through a second silencing hole on the peripheral wall of the spherical silencing piece to perform secondary uniform distribution and silencing of pressure and flow, and then is diffused into the air. The structure arrangement for twice pressure and flow uniform distribution and noise reduction of the discharged fluid medium can effectively improve the noise reduction effect. Experiments show that the invention is used in the pressure range of 0.1MPThe air supply system with a-35 MPa can achieve the purposes of effectively eliminating noise and reducing noise, is particularly used for discharging of a high-pressure air supply system, and can reduce the noise of direct discharge of 100-120 dB to 80-90 dB. Meanwhile, the structural design of the invention realizes a smaller volume-to-displacement ratio which can reach 0.1(L: m)³And/s) and the ratio of the straight discharge flow rate to the silencing discharge flow rate is less than 1.5, so that the high discharge efficiency is realized. As an optimized scheme, the first silencing layer is coated on the outer side of the peripheral wall of the tubular silencing piece, which is positioned in the inner cavity of the spherical silencing piece, and covers all the first silencing holes, so that the uniformity of the pressure and the flow of a fluid medium can be improved through the first silencing layer, and the silencing and noise reducing effects are enhanced; in a similar way, the second silencing layer is coated on the outer side of the peripheral wall of the spherical silencing piece and covers all the second silencing holes, so that the uniformity of the pressure and the flow of the fluid medium can be further improved through the second silencing layer, and the silencing and noise reducing effects are better. In addition, the protective fixing net and the fixing ring are arranged on the outer side of the second silencing layer, so that the structural stability of the silencer is enhanced, and the service life of the silencer is prolonged.

The high-pressure large-flow spherical silencer of the invention is further described in detail with reference to the following specific embodiments shown in the attached drawings:

drawings

FIG. 1 is a perspective view of a first embodiment of a high pressure, high flow spherical muffler of the present invention;

FIG. 2 is a plan view of a first embodiment of a high pressure, high flow spherical muffler of the present invention;

FIG. 3 is a view taken along line A-A of FIG. 2;

FIG. 4 is a perspective view of a second embodiment of a high pressure, high flow spherical muffler of the present invention;

FIG. 5 is a plan view of a second embodiment of a high pressure, high flow spherical muffler of the present invention;

fig. 6 is a view from the direction B-B in fig. 5.

Detailed Description

It should be noted that, the terms of orientation such as up, down, left, right, etc. described herein are merely convenient for description based on the drawings, and do not limit the technical solution of the present invention, and those skilled in the art can make corresponding changes according to the actual use situation.

Fig. 1 to fig. 3 show a schematic diagram of a first embodiment of a high-pressure large-flow spherical muffler according to the present invention, which includes a tubular muffler 1 and a spherical muffler 2, wherein a sleeve 21 communicating with a spherical inner cavity of the spherical muffler 2 is disposed on the right side of the spherical muffler 2, the tubular muffler 1 penetrates through the sleeve 21, the outer sidewall of the tubular muffler 1 is hermetically and fixedly connected with the inner sidewall of the sleeve 21, the left end of the tubular muffler 1 is closed and located in the inner cavity of the spherical muffler 2, and the right end of the tubular muffler 1 is open. Meanwhile, a plurality of first silencing holes are formed in the peripheral wall, located in the inner cavity of the spherical silencing piece 2, of the tubular silencing piece 1, and a plurality of second silencing holes are formed in the peripheral wall of the spherical silencing piece 2. Through the structure, the high-pressure large-flow spherical silencer with simple structure, good noise reduction effect and wide adaptive pressure range is formed. In practical application, the right end of the tubular silencing piece 1 is connected with a discharge pipe or a valve of an air supply system, in the process of discharging and exhausting, a fluid medium firstly passes through a first silencing hole on the peripheral wall of the tubular silencing piece 1 to perform primary uniform distribution and silencing of pressure and flow, then enters between the tubular silencing piece 1 and the spherical silencing piece 2, passes through a second silencing hole on the peripheral wall of the spherical silencing piece 2 to perform secondary uniform distribution of pressure and flow, and is diffused into the air after silencing. The structure arrangement for twice pressure and flow uniform distribution and noise reduction of the discharged fluid medium can effectively improve the noise reduction effect. Experiments show that the invention can achieve the purposes of effectively silencing and reducing noise when being used in an air supply system with the pressure ranging from 0.1MPa to 35MPa, is particularly used for discharging of a high-pressure air supply system, can reduce the noise of direct discharge of 100dB to 120dB to 80 dB to 90dB, and has good benefits for improving the working environment and protecting the environment. Meanwhile, the structural design of the invention realizes a smaller volume-to-displacement ratio which can reach 0.1(L: m)³And/s) and the ratio of the straight discharge flow rate to the silencing discharge flow rate is less than 1.5, so that the high discharge efficiency is realized.

As an optimized scheme, in the present embodiment, the right end of the tubular sound-deadening member 1 is located outside the sleeve 21 (so as to extend out of the sleeve 21), the hexagonal head 11 is arranged on the outer side wall of the right end of the tubular sound-deadening member 1, and the inner side wall of the right end of the tubular sound-deadening member 1 is provided with an internal thread. The structure can effectively improve the disassembly and assembly operation efficiency, and is more convenient and faster to use. As a further optimization scheme, in the present embodiment, the first muffling holes are uniformly distributed on the circumferential wall of the tubular muffling element 1, and the first muffling holes are formed in an expanding structure with a small inside and a large outside, and the expanding structure can be implemented in various ways such as setting a chamfer or a fillet at the outer opening of the first muffling holes. The structure can improve the distribution uniformity of the fluid medium, enhance the noise reduction effect, and enable the first muffling hole to adopt an expansion structure with a small inside and a large outside, thereby effectively reducing the pressure of the fluid medium and achieving better noise reduction effect. In a similar way, the second muffling holes are uniformly distributed on the peripheral wall of the spherical muffling piece 2, and the second muffling holes adopt an expansion structure with a small inside and a large outside, so that the noise reduction effect is further improved, and the practicability is higher.

As shown in fig. 4 to fig. 6, a schematic diagram of a second embodiment of the spherical muffler with high pressure and high flow rate according to the present invention is different from the first embodiment in that the second embodiment is formed by coating a first muffling layer 12 on the outer side of the circumferential wall of the tubular muffling member 1 in the inner cavity of the spherical muffling member 2, so that the first muffling layer 12 covers all the first muffling holes, and the first muffling layer 12 is made of porous material. The first silencing layer 12 can improve the uniformity of pressure and flow when the fluid medium is discharged, and enhance the silencing and noise reduction effects. Further, in this embodiment, the second muffling layer 22 is coated outside the peripheral wall of the spherical muffling member 2, so that the second muffling layer 22 covers all the second muffling holes, and the second muffling layer 22 is made of a porous material. The second silencing layer 22 can further improve the pressure and flow uniformity when the fluid medium is discharged, and the silencing and noise reducing effects are better. The first sound-absorbing layer 12 and the second sound-absorbing layer 22 can be made of various porous materials such as felt, chemical fiber felt, metal mesh, etc., and all the technical purposes of the present invention can be achieved. In addition, for the stability of reinforcing structure, prevent that second noise damping layer 22 from damaging and influencing amortization noise reduction effect, this embodiment lets second noise damping layer 22 extend to the outside of sleeve pipe 21 to set up protection fixed network 23 in the outside of second noise damping layer 22, set up solid fixed ring 24 in the outside of protection fixed network 23 and the position that corresponds with sleeve pipe 21, thereby guaranteed the dependable performance of muffler, and prolonged its life.

To assist those skilled in the art to understand the present invention, the operation of a high pressure high flow spherical muffler of the present invention will be briefly described as a second embodiment.

When the gas supply system needs to discharge and exhaust, a discharge pipe or a valve of the gas supply system is connected with the right end of the tubular silencing piece 1, fluid medium with certain pressure enters the tubular silencing piece 1 through the right end of the tubular silencing piece, and firstly, the fluid medium is subjected to primary uniform distribution and silencing of pressure and flow through a first silencing hole in the peripheral wall of the tubular silencing piece 1; then, the pressure and the flow of the fluid medium are uniformly distributed and silenced again through the first silencing layer 12; then, the fluid medium enters between the first silencing layer 12 and the spherical silencing piece 2, and is subjected to third uniform distribution of pressure and flow and silencing through the second silencing holes in the peripheral wall of the spherical silencing piece 2; finally, the fluid medium is subjected to fourth uniform distribution and silencing of pressure and flow through the second silencing layer 22 and is diffused into the air through the protective fixing net 23. The structure for uniformly distributing pressure and flow and silencing discharged fluid medium for multiple times can effectively ensure the noise reduction effect, and is particularly suitable for the discharge of a high-pressure gas supply system.

The above examples are only for describing the preferred embodiments of the present invention, and do not limit the scope of the claimed invention, and various modifications made by the skilled in the art according to the technical solution of the present invention should fall within the scope of the invention defined by the claims without departing from the spirit of the present invention.

Claims

1. The high-pressure large-flow spherical silencer is characterized by comprising a tubular silencing piece (1) and a spherical silencing piece (2), wherein a sleeve (21) communicated with a spherical inner cavity of the spherical silencing piece (2) is arranged on the right side of the spherical silencing piece (2), the tubular silencing piece (1) penetrates through the sleeve (21) and enables the outer side wall of the tubular silencing piece (1) to be fixedly connected with the inner side wall of the sleeve (21) in a sealing mode, the left end of the tubular silencing piece (1) is closed and located in the inner cavity of the spherical silencing piece (2), and the right end of the tubular silencing piece (1) is open; the tubular silencing piece (1) is provided with a plurality of first silencing holes on the peripheral wall in the inner cavity of the spherical silencing piece (2), and the spherical silencing piece (2) is provided with a plurality of second silencing holes on the peripheral wall; the tubular silencing piece (1) is coated with a first silencing layer (12) on the outer side of the peripheral wall in the inner cavity of the spherical silencing piece (2), the first silencing layer (12) covers all first silencing holes, and the first silencing layer (12) is made of a porous material; a second silencing layer (22) is coated outside the peripheral wall of the spherical silencing piece (2), the second silencing layer (22) covers all the second silencing holes, and the second silencing layer (22) is made of a porous material; the second noise reduction layer (22) extends to the outer side of the sleeve (21), a protective fixing net (23) is arranged on the outer side of the second noise reduction layer (22), and a fixing ring (24) is arranged on the outer side of the protective fixing net (23) and in a position corresponding to the sleeve (21).

2. A high-pressure high-flow spherical muffler according to claim 1, wherein the right end of the tubular muffler (1) is located outside the casing (21), the outer side wall of the right end of the tubular muffler (1) is provided with a hexagon head (11), and the inner side wall of the right end of the tubular muffler (1) is provided with internal threads.

3. A high pressure high flow spherical muffler according to claim 1, wherein said first muffling holes are uniformly distributed on the peripheral wall of the tubular muffling element (1) and have an expanded structure with a small inside and a large outside.

4. A high pressure high flow rate spherical silencer according to claim 1, characterized in that said second silencing holes are uniformly distributed on the peripheral wall of the spherical silencer (2) and adopt an expanding structure with a small inside and a large outside.