CN213235189U

CN213235189U - Exhaust vertical silencer of marine high-pressure gas generator

Info

Publication number: CN213235189U
Application number: CN202021710473.8U
Authority: CN
Inventors: 李华诚; 周伟; 李文伟
Original assignee: Zhejiang Power Co Ltd
Current assignee: Zhejiang Power Co Ltd
Priority date: 2020-08-17
Filing date: 2020-08-17
Publication date: 2021-05-18
Anticipated expiration: 2030-08-17

Abstract

The utility model belongs to the technical field of generator exhaust noise control, and discloses an exhaust silencer for a marine high-pressure gas generator, which is characterized in that high-pressure and high-flow-rate gas generated in the generator directly enters a gas distributor for division; the uniformly distributed high-pressure gas enters the first chamber and is absorbed by the stainless steel wire mesh; then the mixture enters a second chamber and a third chamber in sequence for absorption; the partition of the chamber is convex; all the upper and lower ends of the partition board are provided with a tangent plane, and the reinforcing plates are welded; the interiors of the three chambers are communicated; the opening in the third chamber is connected with a stop valve, so that accumulated water in the silencer can be discharged. The utility model discloses utensil low noise, to the output influence characteristics such as less of generator.

Description

Exhaust vertical silencer of marine high-pressure gas generator

Technical Field

The utility model belongs to the technical field of generator exhaust noise control, a vertical muffler of marine high-pressure gas generator exhaust of specific design.

Background

Along with the gradual increase of environmental protection consciousness of people to self work and living environment, noise is regarded as the recognized pollution to earth's environment now, and everybody pays more attention to the noise pollution of environment, and in addition, most countries all have legislation, have formulated relevant standards such as industry enterprise noise standard management. The high-pressure gas generator has the disadvantages of huge noise caused during working, wide noise pollution radiation range and negative influence on workers and the surrounding environment. Among them, especially, the exhaust gas having high pressure and high flow rate generates noise. It is necessary to suppress the noise of the exhaust gas.

The prior art commonly used in the industry at present is:

the amortization technique of large-scale generator in the industry is usually used is the resistance amortization method, and the resistance muffler that corresponds is many air chambers structure, and every air chamber just is similar to an acoustic filter, and after the sound wave of various frequencies got into the air chamber, only the sound wave of specific frequency could go out from the breather pipe of baffle, consequently can filter the noise of certain frequency to reach the effect of amortization. The silencer has good silencing effect on medium and low frequency noise, but has slightly insufficient absorption capacity on high frequency noise, and the silencing effect is not ideal. Moreover, when the silencer is used for a long time, condensed water inevitably generated in the silencer cannot be discharged, and the silencing effect of the silencer is seriously influenced.

Therefore, to solve the above problems, an impedance hybrid muffler is used. The resistive silencer mainly utilizes porous sound-absorbing materials to reduce noise, the sound-absorbing materials are generally distributed on the inner wall surface of a flowing pipeline and are arranged in a reasonable mode, when sound waves enter the pipeline, a part of sound energy generates friction in pores of the porous materials, and the sound energy is finally converted into heat energy to be consumed. Because, resistive muffler, it is good to centering high frequency noise cancelling effect, and reactive muffler centering, low frequency noise cancelling effect are good, and both combine together, are about to resistive structure and resistive structure combine together to noise reduction reaches good noise cancelling effect.

Under the action of high-speed pulsating gas flow, the partition board can produce strong vibration, which can produce adverse effect on the performance of the silencer, so that the wall surfaces of the front partition board and the rear partition board are designed into convex surfaces, the advantages of increasing the rigidity of the partition board and raising the natural modal frequency of the partition board are achieved.

And a liquid detector is arranged at the lower part of the silencer and used for detecting whether condensed water is generated in the silencer or not.

A stop valve is arranged at the low position of the silencer so as to timely discharge water, thus ensuring that the silencer has good silencing effect.

A Y-shaped filter is arranged in front of the stop valve to prevent impurities from blocking the stop valve.

SUMMERY OF THE UTILITY MODEL

Problem to prior art existence, the utility model provides a vertical muffler of marine high-pressure gas generator exhaust.

The utility model adopts the following technical proposal to achieve the purpose:

a vertical exhaust silencer of a marine high-pressure gas generator comprises a gas distributor, a stainless steel wire mesh, a vent pipe, a front partition plate, a rear partition plate, a reinforcing plate, an exhaust port, a Y-shaped filter, a stop valve, a silencer shell, a liquid detector and a gas inlet, wherein the gas distributor is connected with the gas inlet, and the stainless steel wire mesh is fixed in the silencer shell; the welding part of the front partition plate and the rear partition plate is a convex surface, the welding part is positioned in the shell of the silencer, the vent pipe is welded on the front partition plate and the rear partition plate, the front end and the rear end of the vent pipe are positioned in adjacent chambers, and the adjacent chambers are communicated; the reinforcing plate is welded with the partition plate and the shell of the silencing device, and the partition plate is fixed on the shell of the silencing device; the surface of the shell of the silencing device is provided with holes which are distributed and connected with the Y-shaped filter and the stop valve; and the liquid detector is fixed at the lowest point of the third chamber of the silencer through an opening on the shell of the silencer.

Preferably, the number of the chambers is three, and the three horizontal lowest points in the chambers are communicated; the lowest position of the silencer in the horizontal direction is provided with a hole in the shell of the silencer, and the hole is connected with a stop valve.

Preferably, a liquid detector is installed at the lowest horizontal point inside the silencer.

To sum up, the utility model discloses can reach following effect:

the utility model discloses can absorb well, low frequency sound, play the absorption effect to high frequency sound again, play actual effect to the reduction of engine exhaust noise. The exhaust noise of the high-voltage gas generator can be reduced to be below 100 decibels. Meeting relevant ship regulations.

To the condensate water in the muffler, liquid detector and stop valve have also been designed, have a Y type filter before cutting the stop valve, can guarantee that the stop valve normally works, so can be timely with the moisture discharge in the muffler, guarantee that the muffler can normally function.

Drawings

Fig. 1 is a schematic view of an embodiment of the present invention;

FIG. 2 is a schematic view of the front baffle of the present invention;

FIG. 3 is a schematic view of a gas distributor according to the present invention;

FIG. 4 is a schematic view of a front bulkhead according to another embodiment of the present invention;

in the figure: 1. a gas distributor; 2. a stainless steel wire mesh; 3. a breather pipe; 4. a front bulkhead; 5. a rear bulkhead; 6. a reinforcing plate; 7. an exhaust port; 8. a Y-type filter; 9. a stop valve; 10. a muffler housing; 11. a liquid detector.

Detailed Description

In order to make the effects, technical solutions and advantages of the present invention clearer, the present invention will be further explained with reference to the accompanying drawings and embodiments, but the present invention is not limited to these embodiments

The prior art reactive muffler includes a plurality of vent tubes and air chambers. Its shortcoming is that it can't deal with high-frequency sound, and the condensate water produced in the interior of the silencer can't deal with, and it has great influence on the silencing effect of the silencer.

As shown in fig. 1-4, an embodiment of the present invention provides a vertical exhaust silencer for a marine high-pressure gas generator, which includes a gas distributor 1, a stainless steel wire mesh 2, a vent pipe 3, a front partition plate 4, a rear partition plate 5, a reinforcing plate 6, an exhaust port 7, a Y-shaped filter 8, a stop valve 9, a silencer housing 10, a liquid detector 11, and an air inlet, wherein the gas distributor 1 is connected to the air inlet, and the stainless steel wire mesh 2 is fixed in the silencer housing 10; the welding part of the front partition plate 4 and the rear partition plate 5 is a convex surface, the welding part is positioned in the shell 10 of the silencer, the vent pipe 3 is welded on the front partition plate 4 and the rear partition plate 5, the front end and the rear end of the vent pipe 3 are positioned in adjacent chambers, and the adjacent chambers are communicated; the reinforcing plate 6 is welded with a partition plate and a silencer shell 10, and the partition plate is fixed on the silencer shell 10; the surface of the shell 10 of the silencing device is provided with holes which are connected with the Y-shaped filter 8 and the stop valve 9 in a distributed manner; the liquid detector 11 is fixed at the lowest point of the third chamber of the silencer by opening a hole on the shell 10 of the silencer.

Furthermore, the number of the chambers is three, and the three horizontal lowest points in the chambers are communicated; the lowest level of the silencer is arranged at the opening of the silencer shell 10 and is connected with the stop valve 9.

Further, a liquid detector 11 is installed at the lowest horizontal point inside the silencer.

A front partition plate 4 and a rear partition plate 5 are welded in the shell 10 of the silencer, and the interior of the silencer is divided into three chambers by the front partition plate 4 and the rear partition plate 5; the bottom of the partition board is provided with a notch, so that the bottom ends of the three chambers are communicated, and accumulated water in the silencer can be conveniently discharged; a reinforcing plate 6 is welded between the partition board and the shell 10 of the silencer to increase the strength of the partition board and prevent the partition board from falling off under the impact of high-pressure fluid;

the front partition plate 4 and the rear partition plate 5 are both convex structures, the structure can increase the rigidity of the partition plates and improve the natural modal frequency of the partition plates, and the partition plates and the silencer shell 10 are welded together through the reinforcing plate 6 and are structurally enhanced, so that the partition plates cannot fall off under the impact of high-pressure gas.

Stainless steel net 2 fixes at silencing device shell 10 inner wall through the welded mode, to the gas of high velocity of flow high pressure high temperature, also can not drop, produces the incomplete bits.

The inlet of the silencer is welded with the gas distributor 1, so that gas can be uniformly distributed in the cavity, the silencer cannot be locally impacted too much, and the silencing effect is enhanced.

A plurality of breather pipes 3 are evenly welded on the baffle, play the purpose of connecting adjacent cavity.

An opening is formed in the outlet sealing plate, and the liquid detector 11 is introduced, so that whether liquid exists in the silencer or not can be detected timely.

A flange hole with the diameter phi of 25mm is formed in the bottom end of a shell 10 of the silencing device of the first chamber, the bottom end is connected with a Y-shaped filter 8 and a stop valve 9 through a flange, the Y-shaped filter 8 can play a role in filtering impurities, and the normal work of the stop valve 9 is ensured; the liquid in the silencer is discharged through the stop valve 9 in time, so that the silencing effect of the silencer is not influenced.

Claims

1. The utility model provides a vertical muffler of marine high-pressure gas generator exhaust, includes gas distributor (1), stainless wire net (2), breather pipe (3), preceding baffle (4), back baffle (5), reinforcing plate (6), gas vent (7), Y type filter (8), stop valve (9), silencing device shell (10), liquid detector (11), air inlet, its characterized in that: the gas distributor (1) is connected with the gas inlet, and the stainless steel wire mesh (2) is fixed in the shell (10) of the silencer; the welding part of the front partition plate (4) and the rear partition plate (5) is a convex surface, the welding part is positioned in the shell (10) of the silencer, the vent pipe (3) is welded on the front partition plate (4) and the rear partition plate (5), the front end and the rear end of the vent pipe (3) are positioned in adjacent chambers, and the adjacent chambers are communicated; the reinforcing plate (6) is welded with a partition plate and a shell (10) of the silencing device, and the partition plate is fixed on the shell (10) of the silencing device; the surface of the shell (10) of the silencing device is provided with holes, and the holes are distributed and connected with the Y-shaped filter (8) and the stop valve (10); the liquid detector (11) is fixed at the lowest point of the third chamber of the silencer through an opening on the shell (10) of the silencer.

2. The vertical muffler for exhaust gas of a marine high-pressure gas generator according to claim 1, wherein: the number of the chambers is three, and the horizontal lowest points in the three chambers are communicated; the lowest position of the horizontal silencing device is positioned at the opening of a shell (10) of the silencing device and is connected with a stop valve (9).

3. The vertical muffler for exhaust gas of a marine high-pressure gas generator according to claim 1, wherein: and a liquid detector (11) is arranged at the lowest horizontal point in the silencer.