CN215981400U

CN215981400U - Waste nitrogen silencer

Info

Publication number: CN215981400U
Application number: CN202121752640.XU
Authority: CN
Inventors: 陈睿轩; 陈红
Original assignee: Wuhan Bozhi Ruiyuan Environmental Protection Technology Co ltd
Current assignee: Wuhan Bozhi Ruiyuan Environmental Protection Technology Co ltd
Priority date: 2021-07-29
Filing date: 2021-07-29
Publication date: 2022-03-08
Anticipated expiration: 2031-07-29

Abstract

The utility model provides a waste nitrogen silencer, which relates to the technical field of silencers and comprises a shell, an outlet elbow and an inlet end, wherein one side in the shell is provided with a silencing section, the other side in the shell is provided with a throttling depressurization section, a silencing hole is horizontally arranged in the shell where the silencing section is positioned, a silencing pipe penetrates through the silencing hole, sound-absorbing cotton is filled in the silencing pipe, the central position of one end of the shell, which is close to the throttling depressurization section, is provided with the inlet pipe, the central position of one end of the shell, which is close to the silencing section, penetrates through the outlet elbow, the throttling depressurization section is additionally arranged in the shell, the entering gas and liquid are buffered and depressurized through a resistive sheet type structure, the gas and liquid are intensively circulated through the silencing pipe of the silencing section, the internal filling throttling and silencing are performed through the sound-absorbing cotton, so that the damping shape in the silencer is strong, and the low frequency is reduced, the high-frequency noise reduction effect is good, the steel plate is formed by materials, and the service life is prolonged.

Description

Waste nitrogen silencer

Technical Field

The utility model relates to the technical field of silencers, in particular to a waste nitrogen silencer.

Background

The waste nitrogen emptying noise is mostly subsonic injection, has the characteristics of certain pressure, temperature, humidity and speed, is required by a waste nitrogen emptying silencer, has small silencer resistance, ensures smooth exhaust and rapid pressure relief, can weaken the generation and transmission of noise after a silencer is additionally arranged in the waste nitrogen emptying silencer, ensures that the noise elimination quantity of an outlet noise reaches 20-30 decibels (A sound level), correspondingly reduces the loudness by more than 60 percent, has obvious subjective feeling effect, and the noise elimination quantity is more than 30 dB.

The maximum value of the noise elimination amount of the traditional throttling pressure reduction silencer is about 20dB, the requirement of the noise elimination amount is not enough, meanwhile, the traditional silencer is internally silencing by adopting a single-structure cavity, the traditional silencer is in direct contact with the inside of the gas firstly, the buffer cannot be carried out, the shell of the silencer is easily damaged, and the service life of the silencer is shortened.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the defects in the prior art and provides a waste nitrogen silencer.

In order to achieve the purpose, the utility model adopts the following technical scheme: dirty nitrogen silencer, including shell, export elbow and entrance point, the inside one side of shell is equipped with the noise elimination section, the inside opposite side of shell is equipped with the throttle and steps down the section, the noise elimination hole has been seted up to the inside level of shell at noise elimination section place, the inside muffler pipe that runs through of noise elimination hole is equipped with, the inside sound absorption cotton that is filled of muffler pipe, the shell is close to the one end central point of throttle and steps down the section and puts to run through and be equipped with the import pipe, the shell is close to the one end central point of noise elimination section and puts to run through and be equipped with the export elbow.

Preferably, the shell adopts steel sheet extrusion, and thickness is 3mm between shell inner wall and the outer wall, shell surface edge all adopts the burr treatment of polishing.

Preferably, the throttling and pressure reducing section is formed by uniformly distributing steel plates with the thickness of 3mm in a straight line inside the shell, and the outer edges of the steel plates are welded with the inner wall of the shell.

Preferably, the two ends of the silencing section are fixed to the inner wall of the shell by steel plates with the thickness of 3mm, and the silencing holes penetrate through two end faces of the silencing section.

Preferably, the silencing pipe is fixed with the inside of the shell by a steel pipe with the thickness of 1mm, and the diameter of the outer wall of the silencing pipe is the same as that of the inner wall of the silencing hole.

Preferably, the outlet elbow is welded with the end part of the shell by adopting a two-way bent steel pipe with the thickness of 3mm, and the inlet pipe is welded with the end surface of the shell by adopting a two-way linear steel pipe with the thickness of 3 mm.

Preferably, the edge of the outlet elbow abutted against the end face of the shell is subjected to sealing treatment, and the edge of the inlet pipe abutted against the end face of the shell is subjected to sealing treatment.

Advantageous effects

According to the utility model, the throttling depressurization section is added in the shell, the entering gas and liquid are buffered and depressurized through the resistive sheet type structure, the gas and liquid are intensively circulated through the silencing pipe of the silencing section, and the internal filling throttling silencing is carried out through the sound absorption cotton, so that the damping shape in the silencer is strong, the low-frequency and high-frequency noise reduction effect is good, the steel plate is formed by the material, and the service life is prolonged.

Drawings

FIG. 1 is a schematic perspective view of a waste nitrogen muffler;

FIG. 2 is an enlarged view at A of FIG. 1;

FIG. 3 is a side cross-sectional view of the muffling segment of the dirty nitrogen muffler.

Illustration of the drawings:

1. a housing; 2. a throttling and pressure reducing section; 3. a sound-deadening segment; 301. a sound-deadening aperture; 302. a muffler pipe; 303. sound absorbing cotton; 4. an outlet elbow; 5. an inlet pipe.

Detailed Description

In order to make the technical means, the original characteristics, the achieved purposes and the effects of the utility model easily understood, the utility model is further described below with reference to the specific embodiments and the attached drawings, but the following embodiments are only the preferred embodiments of the utility model, and not all embodiments. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative efforts belong to the protection scope of the present invention.

Specific embodiments of the present invention are described below with reference to the accompanying drawings.

The specific embodiment is as follows:

referring to fig. 1-3, the waste nitrogen silencer comprises a shell 1, an outlet elbow 4 and an inlet end, wherein one side inside the shell 1 is provided with a silencing section 3, the other side inside the shell 1 is provided with a throttling depressurization section 2, a silencing hole 301 is horizontally arranged inside the shell 1 where the silencing section 3 is positioned, a silencing pipe 302 is arranged inside the silencing hole 301 in a penetrating manner, sound absorption cotton 303 is filled inside the silencing pipe 302, an inlet pipe 5 is arranged at the center position of one end of the shell 1 close to the throttling depressurization section 2 in a penetrating manner, an outlet elbow 4 is arranged at the center position of one end of the shell 1 close to the silencing section 3 in a penetrating manner, the throttling depressurization section 2 is additionally arranged inside the shell 1, the entering gas and liquid are buffered and depressurized through a resistive sheet type structure, the gas and liquid are intensively circulated through the silencing pipe 302 of the silencing section 3, the internal throttling and silencing are performed through the sound absorption cotton 303, so that the damping shape inside the silencer is strong, the low-frequency and high-frequency noise reduction effect is good, the steel plate is formed by materials, the service life is prolonged, the shell 1 is formed by extrusion of steel plates, the thickness between the inner wall and the outer wall of the shell 1 is 3mm, the surface edge of the shell 1 is processed by polishing burrs, the throttling and pressure reduction section 2 is formed by linearly and uniformly distributing the steel plates with the thickness of 3mm in the shell 1, the outer edges of the steel plates are welded with the inner wall of the shell 1, the two ends of the silencing section 3 are fixed with the inner wall of the shell 1 by the steel plates with the thickness of 3mm, silencing holes 301 penetrate through the two end faces of the silencing section 3, a silencing pipe 302 is fixed with the inner part of the shell 1 by the steel pipes with the thickness of 1mm, the diameter of the outer wall of the silencing pipe 302 is the same as that of the inner wall of the silencing holes 301, the unbalanced expansion process under the condition that gas or steam flows through the holes under the action of great local resistance is realized, the entropy of the fluid is increased and the pressure is reduced due to the release of friction heat, the structure of the throttling depressurization section 2 is formed by connecting a plurality of layers of throttling orifice plates in series, and as the acoustic power of jet noise is in direct proportion to the 2.3 power of the pressure drop, the through-flow section is designed according to the size of the exhaust flow, so thatThe original direct evacuation of high-pressure gas is changed into the gradual pressure reduction and then evacuation through a multilayer pressure reduction device, so that a better noise elimination effect is achieved, the value of the friction resistance coefficient in the silencer shell 1 is 0.6, the gas flow rate in each second time per square area in a silencer channel in the silencer channel is m 3/second and 18, the coefficient value related to the structure of a sound absorption material is 0.5, and the value of the gas flow density is 1.34Kg/m²The air velocity and the flow velocity are 18m/s, the combined steam emptying silencer noise elimination quantity of the throttling depressurization section 2 and the noise elimination section 3 is more than 40dB, the noise reduction requirement is completely met, the outlet elbow 4 is welded with the end part of the shell 1 by adopting a two-way bent steel pipe with the thickness of 3mm, the inlet pipe 5 is welded with the end surface of the shell 1 by adopting a two-way straight steel pipe with the thickness of 3mm, the abutting edge of the outlet elbow 4 and the end surface of the shell 1 is sealed, the abutting edge of the inlet pipe 5 and the end surface of the shell 1 is sealed, the internal sealing performance of the shell 1 is guaranteed, and leakage is prevented.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The foregoing shows and describes the general principles, essential features, and advantages of the utility model. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. Dirty nitrogen silencer, including shell (1), export elbow (4) and entrance point, its characterized in that: the utility model discloses a silencer, including shell (1), noise elimination section (3), noise elimination hole (301), muffler hole (301) are run through to be equipped with in the inside opposite side of shell (1) is equipped with throttle pressure reduction section (2), noise elimination hole (301) have been seted up to the inside level of shell (1) at noise elimination section (3) place, noise elimination pipe (302) inside is filled and is equipped with sound absorption cotton (303), shell (1) is close to the one end central point of throttle pressure reduction section (2) and puts and runs through and be equipped with import pipe (5), the one end central point that shell (1) is close to noise reduction section (3) puts and runs through to be equipped with outlet elbow (4).

2. The dirty nitrogen muffler of claim 1, wherein: the shell (1) adopts steel sheet extrusion, and thickness is 3mm between shell (1) inner wall and the outer wall, shell (1) surface edge all adopts the burr treatment of polishing.

3. The dirty nitrogen muffler of claim 1, wherein: the throttling and pressure reducing section (2) is formed by linearly and uniformly distributing steel plates with the thickness of 3mm in the shell (1), and the outer edges of the steel plates are welded with the inner wall of the shell (1).

4. The dirty nitrogen muffler of claim 1, wherein: the two ends of the muffling segment (3) are fixed to the inner wall of the shell (1) by steel plates with the thickness of 3mm, and the muffling holes (301) penetrate through the two end faces of the muffling segment (3).

5. The dirty nitrogen muffler of claim 1, wherein: the silencing pipe (302) is fixed with the inside of the shell (1) by adopting a steel pipe with the thickness of 1mm, and the diameter of the outer wall of the silencing pipe (302) is the same as that of the inner wall of the silencing hole (301).

6. The dirty nitrogen muffler of claim 1, wherein: the outlet elbow (4) is welded with the end of the shell (1) by adopting a two-way bent steel pipe with the thickness of 3mm, and the inlet pipe (5) is welded with the end face of the shell (1) by adopting a two-way linear steel pipe with the thickness of 3 mm.

7. The dirty nitrogen muffler of claim 1, wherein: the outlet elbow (4) and the end face abutting edge of the shell (1) are subjected to sealing treatment, and the inlet pipe (5) and the end face abutting edge of the shell (1) are subjected to sealing treatment.