CN213177022U

CN213177022U - Silencer

Info

Publication number: CN213177022U
Application number: CN202021111794.6U
Authority: CN
Inventors: 马容忠; 王永华
Original assignee: Yangzhou Giant Machinery Co ltd
Current assignee: Yangzhou Giant Machinery Co ltd
Priority date: 2020-06-16
Filing date: 2020-06-16
Publication date: 2021-05-11
Anticipated expiration: 2030-06-16

Abstract

The utility model discloses a silencer, including the straight tube, the straight tube periphery is provided with first outer tube, and first outer tube periphery is provided with the second outer tube, and the second outer tube end is provided with the shrouding, the end of first outer tube with the shrouding is fixed mutually, is provided with the second shrouding in the second outer tube, the end of straight tube with the second shrouding links to each other, and first outer tube front end is provided with the third shrouding with second outer tube front end, and the air inlet is connected to the straight tube front end, a plurality of first apertures have been seted up on the straight tube, a plurality of second apertures have been seted up on the first outer tube, the third aperture has been seted up on the shrouding, the third aperture is located between first outer tube. The utility model discloses a set up a plurality of apertures, replace the current direct mode that the straight tube was given vent to anger, under the unchangeable condition of the area of giving vent to anger, when the air current flowed through a plurality of apertures, the frequency spectrum of jet noise will move to high frequency or hyperfrequency, makes the audible component in the frequency spectrum obviously reduce to reduce interference and injury to the people.

Description

Silencer

Technical Field

The utility model relates to a cryogenic liquids storage tank technical field, concretely relates to apply to silencer of liquid storage tank relief valve department.

Background

In the process of air leakage of the safety valve of the low-temperature liquid storage tank, because the pressure in the pipeline is higher, the flow rate of the air flow is also higher during air leakage, the generated noise is also higher, and the higher noise can cause certain influence on the hearing of workers, so that the simple and effective noise elimination device is particularly necessary to manufacture.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a simple structure, silencer that noise elimination effect is good to the not enough that exists among the above-mentioned background art.

In order to achieve the above object, the utility model relates to a silencer has adopted following technical scheme:

the utility model provides a silencer, includes the straight tube, the straight tube periphery is provided with first outer tube, first outer tube periphery is provided with the second outer tube, second outer tube end is provided with the shrouding, the end of first outer tube with the shrouding is fixed mutually, be provided with the second shrouding in the second outer tube, the end of straight tube with the second shrouding links to each other, first outer tube front end is provided with the third shrouding with second outer tube front end, the air inlet is connected to the straight tube front end, a plurality of first apertures have been seted up on the straight tube, a plurality of second apertures have been seted up on the first outer tube, the third aperture has been seted up on the shrouding, the third aperture is located between first outer tube and the second outer tube. The small holes are formed to split the jet air, so that noise reduction is realized, and the structure is simple and easy to realize.

The utility model relates to a silencer further improves part lies in, and a plurality of first apertures are located the latter half of straight tube, a plurality of second apertures are located the first half of first outer tube, the lowest position of first aperture is higher than and equals the highest position of second aperture. The jet air flows in the pipeline, and part of sound energy is lost in the flowing process, so that the silencing effect is ensured.

The utility model relates to a silencer further improves part lies in, and a plurality of first apertures divide into three groups and evenly lay in the straight tube periphery, and every group first aperture evenly lays along straight tube axis direction interval, and a plurality of second apertures divide into three groups and evenly lay in first outer tube periphery, and every group second aperture evenly lays along first outer tube axis direction interval. The small holes are distributed according to a certain mode, and then the feasibility of noise elimination is guaranteed.

The utility model relates to a silencer further improves part lies in, the through-hole has been seted up on the second shrouding, the through-hole is located between straight tube and the first outer tube.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses a set up a plurality of apertures, replace the current direct mode that the straight tube was given vent to anger, under the unchangeable condition of the area of giving vent to anger, when the air current flowed through a plurality of apertures, the frequency spectrum of jet noise will move to high frequency or hyperfrequency, makes the audible component in the frequency spectrum obviously reduce to reduce interference and injury to the people.

Drawings

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

FIG. 2 is a sectional view taken along line A-A of FIG. 1;

in the figure: 10 straight tubes, 20 first outer tubes, 30 second outer tubes, 40 sealing plates, 50 second sealing plates, 60 third sealing plates, 70 first small holes, 80 second small holes and 90 air inlets.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1 and 2, a muffler includes a straight pipe 10, a first outer pipe 20 is disposed on the periphery of the straight pipe 10, a second outer pipe 30 is disposed on the periphery of the first outer pipe 20, a sealing plate 40 is disposed at the end of the second outer pipe 30, the end of the first outer pipe 20 is fixed to the sealing plate 40, a second sealing plate 50 is disposed in the second outer pipe 20, the end of the straight pipe 10 is connected to the second sealing plate 50, a third sealing plate 60 is disposed at the front end of the first outer pipe 20 and the front end of the second outer pipe 30, the front end of the straight pipe 10 is connected to an air inlet 90, a plurality of first small holes 70 are disposed on the straight pipe 10, a plurality of second small holes 80 are disposed on the first outer pipe 20, a third small hole (not shown) is disposed on the sealing plate 40, and the third small hole is located between the first outer pipe 20 and the second outer pipe 30.

Further, a plurality of first small holes 70 are located at the lower half portion of the straight pipe 10, a plurality of second small holes 80 are located at the upper half portion of the first outer pipe 20, and the lowest positions of the first small holes are higher than the highest positions of the second small holes.

Furthermore, the first small holes 70 are divided into three groups and evenly distributed on the periphery of the straight pipe 10, the first small holes of each group are evenly distributed at intervals along the central axis direction of the straight pipe, the second small holes 80 are divided into three groups and evenly distributed on the periphery of the first outer pipe 20, and the second small holes of each group are evenly distributed at intervals along the central axis direction of the first outer pipe.

The second sealing plate is provided with a through hole (not shown in the figure), and the through hole is positioned between the straight pipe and the first outer pipe. The through holes are formed, so that part of the air is divided and enters a cavity formed by the sealing plate and the second sealing plate, and further noise elimination is realized.

In addition, sound absorbing materials can be arranged on the inner walls of the straight pipe, the first outer pipe and the second outer pipe, so that a better sound absorbing effect is achieved.

The utility model discloses a theory of operation does: when the relief valve of low temperature storage tank is disappointing, jet-propelled enters from the air inlet, through the first aperture on straight tube and the straight tube, sound absorbing material on the straight tube inner wall in addition carries out the noise elimination once, passes through sound absorbing material on second aperture and the first outer tube again, reaches the secondary noise elimination, flows through the second outer tube at last, through sound absorbing material on the second outer tube, realizes final noise elimination, later discharges, has reduced the injury to the human body.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. A muffler characterized by: the straight pipe comprises a straight pipe body, the straight pipe periphery is provided with first outer pipe, first outer pipe periphery is provided with the second outer pipe, the second outer pipe end is provided with the shrouding, the end of first outer pipe with the shrouding is fixed mutually, be provided with the second shrouding in the second outer pipe, the end of straight pipe with the second shrouding links to each other, first outer pipe front end and second outer pipe front end are provided with the third shrouding, the air inlet is connected to the straight pipe front end, a plurality of first apertures have been seted up on the straight pipe, a plurality of second apertures have been seted up on the first outer pipe, the third aperture has been seted up on the shrouding, the third aperture is located between first outer pipe and the second outer pipe.

2. A muffler according to claim 1, wherein: the plurality of first small holes are positioned on the lower half part of the straight pipe, the plurality of second small holes are positioned on the upper half part of the first outer pipe, and the lowest positions of the first small holes are higher than the highest positions of the second small holes.

3. A muffler according to claim 2, wherein: the first small holes are evenly distributed on the periphery of the straight pipe in three groups, the first small holes in each group are evenly distributed in the middle axis direction of the straight pipe at intervals, the second small holes in each group are evenly distributed on the periphery of the first outer pipe in three groups, and the second small holes in each group are evenly distributed in the middle axis direction of the first outer pipe at intervals.

4. A muffler according to claim 1, wherein: the second sealing plate is provided with a through hole, and the through hole is located between the straight pipe and the first outer pipe.