CN202733311U

CN202733311U - Gas silencer

Info

Publication number: CN202733311U
Application number: CN 201220385238
Authority: CN
Inventors: 郑亚青; 马琳; 艾国; 马振宇
Original assignee: BEIJING STARTECH Co Ltd
Current assignee: BEIJING STARTECH Co Ltd
Priority date: 2012-08-03
Filing date: 2012-08-03
Publication date: 2013-02-13
Anticipated expiration: 2022-08-03

Abstract

The utility model discloses a gas silencer which comprises an outer decompression pipe, middle decompression pipes and an inner decompression pipe, wherein the outer decompression pipe, the middle decompression pipes and the inner decompression pipe are sheathed in sequence from outside to inside. The gas silencer is characterized in that the outer decompression pipe, the middle decompression pipes and the inner decompression pipe are coaxially arranged, a plurality of rows of exhaust holes which are arranged in accordance with a certain rule are formed in side walls of the outer decompression pipe, the middle decompression pipes and the inner decompression pipe, and sound absorbing materials are arranged between two adjacent middle decompression pipes and between the middle decompression pipes and the outer decompression pipe. Multiple stages of the decompression pipes which are mutually sheathed are arranged, the exhaust holes are formed in the decompression pipes, and sound absorbing cotton is arranged among the decompression pipes, so that the level of noise of exhausted gas is obviously reduced through small hole silencing, sound absorption of the sound absorbing cotton and the arrangement of the multiple stages of the decompression pipes. Additionally, the gas silencer has the advantages of simple structure, light weight and low manufacturing cost.

Description

A kind of gas baffler

Technical field

The utility model relates to the noise reduction technology field of gas discharging process, relates in particular to a kind of gas baffler.

Background technique

The gas baffler is mounted in the silencer of the gas exhaust piping ends such as outlet valve, safety valve.Its objective is and eliminate the noise that the pipeline exhaust causes.Existing pipeline muffler mainly adopts copper pearl sintering structure, and its shortcoming is under high pressure to use, high pressure can make the sintered copper pearl broken, and the working pressure occasion is below 1MPa, and another shortcoming is that resistance is large, exhaust has some setbacks, and is not suitable for requiring the occasion without back pressure.

Simultaneously people never arouse enough attention for the noise reduction of high pressure gas pipeline to noise pollution understanding not, and especially on operator's impact, and the operator is accustomed to, can put forward solution.Think little of, also often do not take measures, high pressure air is in line in atmosphere, and moment is caused noise pollution and personnel's actual bodily harm.

For above problem scientific and technological work personnel some corrective measures have been proposed also, such as Chinese patent application 200810021382.0 disclosed a kind of bafflers, it is characterized in that, suction tude, housing and end socket, have the inlet hole of a plurality of small pore-like on the described suction tude, described suction tude top seal, it is characterized in that being provided with a fixed dam near the end socket place in the described housing is divided into housing ante-chamber and housing back cavity with housing, have many inner tubes on the described fixed dam and be communicated with housing ante-chamber and housing back cavity, have a plurality of annular slotted holes on the described housing back cavity, and baffler increases fixed dam, makes urceolus be divided into chamber, front and back two parts, and erasure effect obtains increasing; The increase of inner tube produces air-flow and refluxes, and meets simultaneously the effect of aperture noise reduction; Although the noise that this device produces during to a certain extent to gas discharging has certain abated effect, to the right Shortcomings of the discharging of pressurized gas, and its noise reduction capability is also on the weak side.

The model utility content

The purpose of this utility model is to propose a kind of gas baffler, adopt the socket of multi-step pressure reduction pipe, between relief pipe, be provided with sound absorbing material, and be provided with exhaust port at relief pipe, can so that baffler have higher decrease of noise functions and have higher Security, stability and reliability.

For reaching this purpose, the utility model by the following technical solutions:

A kind of gas baffler comprises, the outer relief pipe, intermediate relief pipe and the interior relief pipe that are socketed successively from outside to inside is characterized in that described outer relief pipe, intermediate relief pipe and interior relief pipe are coaxial setting;

Be provided with the exhaust port that many rows arrange according to certain rules on the sidewall of described outer relief pipe, intermediate relief pipe and interior relief pipe;

Between the described two adjacent intermediate relief pipes and be provided with sound absorbing material between intermediate relief pipe and the outer relief pipe.

As a kind of preferred version of above-mentioned gas baffler, described intermediate relief comprises a relief pipe at least.

As a kind of preferred version of above-mentioned gas baffler, exhaust port always successively increases progressively from inside to outside by area.

As a kind of preferred version of above-mentioned gas baffler, described sound absorbing material is glass fibre or silencing cotton.

As a kind of preferred version of above-mentioned gas baffler, the constouctional material of described silencing cotton is steel wool or organic cotton.

As a kind of preferred version of above-mentioned gas baffler, described outer relief pipe and intermediate relief pipe are end sealing, and the other end is hatch frame; The opening end of described outer relief pipe and intermediate relief pipe is all towards same direction and pass through end bracket enclosed.

As a kind of preferred version of above-mentioned gas baffler, described end cap is connected with outer relief pipe by welding or being threaded.

As a kind of preferred version of above-mentioned gas baffler, described interior relief pipe two ends are hatch frame, and an end of described interior relief pipe is connected with interface, and its other end is positioned at the tube chamber of one deck intermediate relief pipe.

As a kind of preferred version of above-mentioned gas baffler, described interface is connected with the relief opening of gas outlet means by inipple, flanged joint or welded joint.

The beneficial effects of the utility model are: the utility model is by providing a kind of gas baffler, by the relief pipe of multistage mutual socket is set, and relief pipe be provided with exhaust port and between be provided with acoustical cotton, by aperture noise reduction and acoustical cotton to the absorption of sound and the setting of multi-step pressure reduction pipe, when significantly reducing the exhausting air level of noise, also have simple in structure, quality light and the advantage of low cost of manufacture.

Description of drawings

Fig. 1 is the structural representation of the gas baffler that provides of the utility model embodiment.

Wherein:

1: outer relief pipe; 2: the intermediate relief pipe; 3: interior relief pipe; 4: exhaust port; 5: sound absorbing material; 6: end cap; 7: interface; 21: the one-level relief pipe; 22: the second depressurized pipe.

Embodiment

Further specify the technical solution of the utility model below in conjunction with accompanying drawing and by embodiment.

As shown in Figure 1, a kind of gas baffler comprises from outside to inside successively outer relief pipe 1, intermediate relief pipe 2 and the interior relief pipe 3 of socket, and wherein, outer relief pipe 1, intermediate relief pipe 2 and interior relief pipe 3 are coaxial setting; Be provided with the exhaust port 4 that many rows arrange according to certain rules on the sidewall of outer relief pipe 1, intermediate relief pipe 2 and interior relief pipe 3, exhaust port 4 is to arrange by the mode of matrix in this mode of execution, and exhaust port 4 is by outwards successively increasing progressively by area always, exhaust port 4 always pass through area greater than the area that passes through of inside one-level by the outside one-level of area, it is conducive to gas and spreads to skin, is convenient to low-pressure gas by this gas baffler discharging.

Be provided with sound absorbing material 5 between two adjacent intermediate relief pipes 2 and intermediate relief pipe 2 and the outer relief pipe 1, sound absorbing material 5 can be glass fibre or silencing cotton, and other equivalent sound absorbing material 5, the constouctional material of silencing cotton is steel wool or organic cotton, in this mode of execution, the silencing cotton that is formed by organic cotton that sound absorbing material 5 is selected, when sound is propagated in the acoustical cotton of porous, rubbed and the effect of viscous resistance, make the acoustic energy energy transform into heat energy and dissipate, the effect of advancing too much one-tenth silencing cotton can realize reducing the purpose of noise.

Intermediate relief pipe 2 comprises a relief pipe at least, the setting of the quantity of relief pipe is to consider to determine by the initial level of noise that enters the gas baffler and manufacture cost, in this mode of execution, the quantity of intermediate relief pipe be 2 its be respectively one-level relief pipe 21 and second depressurized pipe 22, more its noise reduction capability of the quantity of the relief pipe that intermediate relief pipe 2 comprises are stronger.

Outer relief pipe 1 and intermediate relief pipe 2 are end sealing, and the other end is the structure of opening; The opening of outer relief pipe 1 and intermediate relief pipe 2 is all towards same end and by end cap 6 sealings, end cap 6 is connected with outer relief pipe 1 by welding or being threaded, in order to make things convenient for the later maintenance of gas baffler, end cap 6 and outer relief pipe 1 are threaded connection, and are convenient to the dismounting between end cap 6 and the relief pipe 1; Outer relief pipe 1 and intermediate relief pipe 2 are arranged to end sealing, one section is the mechanism of opening, it is in order to be that noise only can be discharged by the exhaust port 4 that is arranged on outer relief pipe 1 and the intermediate relief pipe 2, air-flow is by exhaust port 4 time, the frequency spectrum of jet noise will be shifted to high frequency or ultra-high frequency, make in the frequency spectrum section listen composition obviously to reduce, can effectively play the purpose of noise reduction.

The two ends of interior relief pipe 3 are hatch frame, one end of interior relief pipe 3 is connected with interface 7, its the other end is positioned at the tube chamber of one deck intermediate relief pipe 2, because the caliber of interior relief pipe 3 is comparatively speaking less, so in order to make things convenient for air-flow to enter gas baffler inside hatch frame all is arranged at the two ends of interior relief pipe, certainly it also can be arranged to end sealing, and an end is the structure of opening.

Interface 7 is connected with relief opening by inipple, flange arrangement or welded joint, and for the dismounting that makes things convenient for itself and relief opening and strengthen join strength between them, in this mode of execution, both adopt the flange arrangement connection.

Relief pipes at different levels all are to be made by metallic material, can be different according to the gas pressure that enters hush pipes at different levels, and the different set of relief pipe progression is made the intensity of relief pipe materials at different levels.

A kind of method of work of gas baffler, after gas enters the gas baffler, enter intermediate relief pipe 2 after spreading deceleration by interior relief pipe 3, gas is the acoustical cotton decompression reduction of speed through the exhaust port 4 on the relief pipes at different levels in the intermediate relief pipe 2 and between arranging in intermediate relief pipe 2, gets rid of by the exhaust port that is arranged on the outer relief pipe 1 after being arranged on the acoustical cotton decompression reduction of speed between intermediate relief pipe 2 and the outer relief pipe 1 at last.By be arranged on exhaust port 4 on each relief pipe and the acoustical cotton between them to the absorption of sound can be significantly with reducing noise below 80dB.

Know-why of the present utility model has below been described in conjunction with specific embodiments.These are described just in order to explain principle of the present utility model, and can not be interpreted as by any way the restriction to the utility model protection domain.Based on explanation herein, those skilled in the art does not need to pay performing creative labour can associate other embodiment of the present utility model, and these modes all will fall within the protection domain of the present utility model.

Claims

1. a gas baffler comprises, the outer relief pipe, intermediate relief pipe and the interior relief pipe that are socketed successively from outside to inside is characterized in that described outer relief pipe, intermediate relief pipe and interior relief pipe are coaxial setting;

2. gas baffler according to claim 1 is characterized in that, described intermediate relief pipeline comprises a relief pipe at least.

3. gas baffler according to claim 2 is characterized in that exhaust port always successively increases progressively from inside to outside by area.

4. gas baffler according to claim 3 is characterized in that, described sound absorbing material is glass fibre or silencing cotton.

5. gas baffler according to claim 4 is characterized in that, the constouctional material of described silencing cotton is steel wool or organic cotton.

6. gas baffler according to claim 5 is characterized in that, described outer relief pipe and intermediate relief pipe are end sealing, and the other end is hatch frame; The opening end of described outer relief pipe and intermediate relief pipe is all towards same direction and pass through end bracket enclosed.

7. gas baffler according to claim 6 is characterized in that, described end cap is connected with outer relief pipe by welding or being threaded.

8. gas baffler according to claim 1 is characterized in that, described interior relief pipe two ends are hatch frame, and an end of described interior relief pipe is connected with interface, and its other end is positioned at the tube chamber of one deck intermediate relief pipe.

9. gas baffler according to claim 8 is characterized in that, described interface is connected with the relief opening of gas outlet means by inipple, flanged joint or welded joint.