CN214123487U - Silencer for air separation plant - Google Patents
Silencer for air separation plant Download PDFInfo
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- CN214123487U CN214123487U CN202022505273.5U CN202022505273U CN214123487U CN 214123487 U CN214123487 U CN 214123487U CN 202022505273 U CN202022505273 U CN 202022505273U CN 214123487 U CN214123487 U CN 214123487U
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Abstract
The utility model relates to a silencer for an air separation plant, which comprises a silencer shell, wherein one end of the silencer shell is provided with an air inlet pipe, and the other end of the silencer shell is provided with an air outlet pipe; the silencer is characterized in that a first inner sleeve and a second inner sleeve are arranged in the silencer shell, and the first inner sleeve, the second inner sleeve and the silencer shell are coaxially sleeved at intervals; the second inner sleeve is positioned between the first inner sleeve and the muffler shell; the opening ends of the first inner sleeve and the second inner sleeve are respectively fixedly and hermetically connected with one end of the silencer shell close to the air inlet pipe, a first air hole and a second air hole are respectively formed in the first inner sleeve and the second inner sleeve, and air-permeable buffer cotton is filled between the second inner sleeve and the first inner sleeve; the air inlet pipe is inserted into the first inner sleeve and forms an insertion section; this muffler for air separation equipment has simple structure, characteristics that noise reduction effect is good.
Description
Technical Field
The utility model belongs to the technical field of silencing equipment, concretely relates to muffler for air separation plant.
Background
The air separation equipment is equipment which takes air as a raw material, changes the air into liquid by adopting a compression cycle deep freezing mode according to the difference of the critical temperature from gas state to liquid state of air components, and gradually separates inert gases such as oxygen, carbon dioxide, nitrogen, helium, argon and the like from the liquid air by rectification. At present, when air separation equipment such as pressure swing adsorption oxygen generation, nitrogen generation, argon generation, air compression, separation and the like works, noise is generated, and noise pollution is extremely easy to form. In order to reduce noise pollution, a silencing structure is generally connected to the air separation plant.
The patent of the Chinese utility model with the publication number of CN204680371U discloses a secondary silencing structure of an air separation plant, which comprises a silencer valve group of a nitrogen making machine, a primary silencer, a nitrogen making machine body and a secondary silencer, wherein the primary silencer is structurally characterized in that a first outer sleeve, a first middle sleeve and a first inner sleeve are sequentially sleeved from outside to inside, and the top end of the first outer sleeve is provided with a first air outlet connecting pipe; the secondary muffler is structurally characterized in that a second outer sleeve, a second middle sleeve and a second inner sleeve are sleeved in sequence from outside to inside; and a first flange of a first air outlet connecting pipe of the first-stage silencer is fixedly connected with a second sleeve flange of the second-stage silencer. Through adopting two-stage muffler amortization, realize carrying out noise cancelling treatment to the air separation equipment. However, the two-stage silencer has the characteristics of complex structure and inconvenient connection.
SUMMERY OF THE UTILITY MODEL
In order to improve the simplified silencer structure and improve the silencing effect, the utility model provides a silencer for an air separation plant; in order to achieve the above object, the utility model discloses a technical scheme specifically as follows:
a silencer for an air separation plant comprises a silencer shell, wherein an air inlet pipe is arranged at one end of the silencer shell, and an air outlet pipe is arranged at the other end of the silencer shell; the silencer is characterized in that a first inner sleeve and a second inner sleeve are arranged in the silencer shell, and the first inner sleeve, the second inner sleeve and the silencer shell are coaxially sleeved at intervals; the second inner sleeve is positioned between the first inner sleeve and the muffler shell; the opening ends of the first inner sleeve and the second inner sleeve are respectively fixedly and hermetically connected with one end of the silencer shell close to the air inlet pipe, a first air hole and a second air hole are respectively formed in the first inner sleeve and the second inner sleeve, and air-permeable buffer cotton is filled between the second inner sleeve and the first inner sleeve; the air inlet pipe is inserted into the first inner sleeve and forms an insertion section.
The utility model discloses a beneficial effect of muffler for air separation equipment: air flow with noise enters the first inner sleeve through the air inlet pipe, is mixed and convected in the first inner sleeve, enters a cavity formed by enclosing between the first inner sleeve and the second inner sleeve through the first air holes, decelerates and filters the air flow under the action of the breathable buffer cotton in the filled cavity, enters a cavity formed by enclosing between the second inner sleeve and the shell of the silencer through the second air holes, is discharged from the air outlet pipe, eliminates the noise in the air flow, and avoids noise pollution; this muffler for air separation equipment has simple structure, characteristics that noise reduction effect is good.
Furthermore, the air inlet pipe comprises a header pipe and a plurality of branch pipes, one ends of the branch pipes are respectively communicated with one end of the header pipe, the branch pipes are inserted into the insertion sections formed in the first inner sleeves, one ends of the branch pipes, far away from the header pipe, are plugged, and a plurality of air outlet holes are formed in the branch pipes.
Has the advantages that: through setting up a plurality of branch pipes, the branch pipe inserts in the first inner skleeve and forms and inserts the section, when the venthole outflow of air current follow different branch pipes, offset and mix in first inner skleeve, and the back is discharged from first venthole, through offset and mix, improves the noise reduction effect.
Furthermore, a connecting sleeve is arranged between the branch pipe and the main pipe, one end of the main pipe is fixed at the center of one end of the connecting sleeve in a sealing mode, and the branch pipe is provided with a connecting sleeve and is far away from one end of the main pipe.
Has the advantages that: through setting up the connecting sleeve, when being convenient for the installation of a plurality of branch pipes, form the hole enlargement section between branch pipe and house steward, be favorable to the air current steady to get into in the branch pipe.
Further, the branch pipes comprise 3 branch pipes, and the branch pipes are arranged in a 'T' shape on the end face of one end of the connecting sleeve far away from the main pipe.
Has the advantages that: 3 branch pipes are arranged in a 'pin' shape, so that the problem of inconvenient connection caused by excessive branch pipes is avoided while the problem that the excessive branch pipes are not beneficial to opposite flushing and mixing is avoided; the 'pin' shaped arrangement facilitates the opposed mixing of the air streams.
Further, the air outlet holes are respectively formed in the circumferential side surfaces of the branch pipes; in the axial direction of the main pipe, air outlet holes arranged on the same branch pipe are uniformly arranged at intervals, and air outlet holes arranged on different branch pipes are alternately and uniformly arranged at intervals; and the air outlet holes arranged on the same branch pipe are uniformly arranged at intervals in the circumferential direction of the branch pipe.
Has the advantages that: the air outlet holes arranged on the same branch pipe are arranged at uniform intervals, and the air outlet holes arranged on different branch pipes are alternately arranged at uniform intervals, so that the opposite impact mixing of air flow in the first inner sleeve pipe is facilitated, and the noise reduction effect is improved.
Further, be provided with loudspeaker form baffle in the house steward, the big footpath section of loudspeaker form baffle with house steward inner wall fixed connection, the path section opening of loudspeaker form baffle, loudspeaker form baffle include a plurality of, with house steward is coaxial to be set up and follows house steward's the even interval arrangement of axial.
Has the advantages that: the horn-shaped partition plates are arranged in the main pipe, so that the air flow in the main pipe is damped, and the noise in the air flow is favorably eliminated.
Furthermore, flanges are respectively arranged at one ends, far away from the silencer shell, of the air inlet pipe and the air outlet pipe, the flange arranged at one end of the air inlet pipe is a first flange, and the flange arranged at one end of the air outlet pipe is a second flange.
Has the advantages that: through setting up first flange and second flange, be convenient for air separation plant with muffler sealing connection on air separation plant.
Furthermore, a groove is formed in the inner surface of the silencer shell, and silencing cotton is filled in the groove.
Has the advantages that: the noise reduction cotton absorbs the noise in the air flow discharged by the air outlet pipe, and is favorable for further improving the noise reduction effect of the silencer for the air separation plant.
Drawings
Fig. 1 is a schematic perspective view of an embodiment of a silencer for an air separation plant according to the present invention;
FIG. 2 is a right side view of FIG. 1;
FIG. 3 is a cross-sectional view taken at A-A of FIG. 2;
fig. 4 is a schematic perspective view of an intake pipe of an embodiment of a silencer for an air separation plant according to the present invention.
Reference numbers in the figures: 1-silencer shell, 2-air inlet pipe, 3-air outlet pipe, 4-first inner sleeve, 5-second inner sleeve, 6-first flange, 7-second flange, 8-silencing cotton, 9-first air vent, 10-second air vent, 11-air-permeable buffering cotton, 12-header pipe, 13-branch pipe, 14-air outlet hole, 15-connecting sleeve pipe and 16-horn-shaped partition plate.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments:
the concrete structure of the embodiment of the silencer for the air separation plant of the utility model is shown in fig. 1-4, and comprises a silencer shell 1, an air inlet pipe 2, an air outlet pipe 3, a first inner sleeve 4 and a second inner sleeve 5; an inlet pipe 2 and an outlet pipe 3 are respectively arranged at two ends of the silencer shell 1. In the embodiment, flanges are respectively arranged at one ends of the air inlet pipe 2 and the air outlet pipe 3 far away from the silencer shell 1, the flange arranged at one end of the air inlet pipe 2 is a first flange 6, and the flange arranged at one end of the air outlet pipe 3 is a second flange 7; the first flange 6 and the second flange 7 are arranged, so that the silencer for the air separation plant is convenient to be connected on the air separation plant in a sealing mode. A groove is formed in the inner surface of the silencer shell 1, the groove is an annular groove, silencing cotton 8 is filled in the annular groove, and the silencing cotton 8 is fixedly connected with the inner bottom surface of the annular groove; the noise reduction cotton 8 absorbs the noise in the airflow to be discharged by the air outlet pipe 3, and is favorable for further improving the noise reduction effect of the silencer for the air separation plant. In other embodiments, the air inlet pipe and the air outlet pipe may be connected to the air separation plant by other methods such as plugging or other welding, on the premise that the two ends of the silencer for the air separation plant are respectively connected to the air separation plant.
The first inner sleeve 4 and the second inner sleeve 5 are arranged in the silencer shell 1, and the first inner sleeve 4, the second inner sleeve 5 and the silencer shell 1 are coaxially sleeved at intervals; the second inner sleeve 5 is located between the first inner sleeve 4 and the muffler shell 1; the open ends of the first inner sleeve 4 and the second inner sleeve 5 are respectively fixedly and hermetically connected with one end of the silencer shell 1 close to the air inlet pipe 2. A first air hole 9 and a second air hole 10 are respectively arranged on the first inner sleeve 4 and the second inner sleeve 5, and air permeable buffer cotton 11 is filled between the second inner sleeve 5 and the first inner sleeve 4; the air-permeable cushion cotton 11 is a cotton wool which is in a fluffy state and has certain air permeability.
The air inlet tube 2 is inserted into the first inner sleeve 4 and forms an insertion section. In this embodiment, the air inlet pipe 2 includes a main pipe 12 and a plurality of branch pipes 13, one end of each branch pipe 13 is respectively communicated with one end of the main pipe 12, the branch pipes 13 are inserted into the first inner sleeves 4 to form insertion sections, one ends of the branch pipes 13 far away from the main pipe 12 are blocked, and a plurality of air outlet holes 14 are formed in the branch pipes 13; through setting up a plurality of branch pipes 13, branch pipe 13 inserts in first inner skleeve 4 and forms the insertion section, when the air current flows out from the venthole 14 of different branch pipes 13, counterpulsation and mixing in first inner skleeve 4, discharge in first bleeder vent 9 after, through counterpulsation and mixing, improve the noise reduction effect. A connecting sleeve 15 is arranged between the branch pipe 13 and the main pipe 12, one end of the main pipe 12 is fixed at the center of one end of the connecting sleeve 15 in a sealing manner, and the branch pipe 13 is provided with one end of the connecting sleeve 15 far away from the main pipe 12; by arranging the connecting sleeve 15, the installation of the plurality of branch pipes 13 is facilitated, and meanwhile, an expanding section is formed between the branch pipes 13 and the main pipe 12, so that airflow can smoothly enter the branch pipes 13. The number of the branch pipes 13 is 3, and the branch pipes 13 are arranged in a 'pin' shape on the end face of one end of the connecting sleeve 15 far away from the main pipe 12; the branch pipe 13 is fixedly connected with the connecting sleeve 15 in a sealing way, and the branch pipe 13 is communicated with the connecting sleeve 15; 3 branch pipes 13 are arranged in a shape of a Chinese character 'pin', so that the problem that the number of the branch pipes 13 is too large to cause inconvenient connection when the number of the branch pipes 13 is too small to facilitate opposite flushing and mixing is avoided; the 'pin' shaped arrangement facilitates the opposed mixing of the air streams. In other embodiments, the number of the branch pipes may be 2 or more than 4, and the branch pipes are arranged on the end surface of the connecting sleeve at regular intervals. In the present embodiment, the air outlet holes 14 are respectively opened on the circumferential side surfaces of the branch pipes 13; in the axial direction of the main pipe 12, the air outlet holes 14 arranged on the same branch pipe 13 are uniformly arranged at intervals, and the air outlet holes 14 arranged on different branch pipes 13 are alternately and uniformly arranged at intervals; the air outlet holes 14 arranged on the same branch pipe 13 are uniformly arranged at intervals in the circumferential direction of the branch pipe 13; the air outlet holes 14 arranged on the same branch pipe 13 are uniformly arranged at intervals, and the air outlet holes 14 arranged on different branch pipes 13 are alternately and uniformly arranged at intervals, so that the opposite impact mixing of air flow in the first inner sleeve pipe is facilitated, and the noise reduction effect is improved.
In this embodiment, a trumpet-shaped partition plate 16 is arranged in the main pipe 12, a large-diameter section of the trumpet-shaped partition plate 16 is fixedly connected with the inner wall of the main pipe 12, a small-diameter section of the trumpet-shaped partition plate 16 is open, and the trumpet-shaped partition plate 16 comprises a plurality of trumpet-shaped partition plates which are arranged coaxially with the main pipe 12 and are uniformly spaced along the axial direction of the main pipe 12; the number of the horn-shaped partition plates 16 is 4; the horn-shaped baffles 16 are arranged in the main pipe 12 to damp the air flow in the main pipe 12, so that the noise in the air flow is eliminated. In other embodiments, no flared baffles are provided in the manifold, or baffles at an oblique angle are provided in place of the flared baffles.
When the device is used, air flow with noise enters the first inner sleeve 4 through the air inlet pipe 2, and primary noise reduction is carried out under the damping action of the horn-shaped partition plate 16 in the main pipe 12 of the air inlet pipe 2; the air flow flows into the first inner sleeve 4 through the air outlet holes 14 on the branch pipes 13, and the mixed convection noise is reduced in the first inner sleeve 4; and the air flow is decelerated and filtered under the action of the ventilating buffering cotton 11 in the filled cavity, enters the cavity formed by the enclosure of the second inner sleeve 5 and the silencer shell 1 from the second air hole 10 and is discharged from the air outlet pipe 3, the noise in the air flow is eliminated, and the noise pollution is avoided.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and replacements can be made without departing from the technical principle of the present invention, and these modifications and replacements should also be regarded as the protection scope of the present invention.
Claims (8)
1. A silencer for an air separation plant comprises a silencer shell, wherein an air inlet pipe is arranged at one end of the silencer shell, and an air outlet pipe is arranged at the other end of the silencer shell; the silencer is characterized in that a first inner sleeve and a second inner sleeve are arranged in the silencer shell, and the first inner sleeve, the second inner sleeve and the silencer shell are coaxially sleeved at intervals; the second inner sleeve is positioned between the first inner sleeve and the muffler shell; the opening ends of the first inner sleeve and the second inner sleeve are respectively fixedly and hermetically connected with one end of the silencer shell close to the air inlet pipe, a first air hole and a second air hole are respectively formed in the first inner sleeve and the second inner sleeve, and air-permeable buffer cotton is filled between the second inner sleeve and the first inner sleeve; the air inlet pipe is inserted into the first inner sleeve and forms an insertion section.
2. The silencer for the air separation equipment according to claim 1, wherein the air inlet pipe comprises a header pipe and a plurality of branch pipes, one ends of the branch pipes are respectively communicated with one end of the header pipe, the branch pipes are inserted into the first inner sleeve to form an insertion section, one ends of the branch pipes, which are far away from the header pipe, are blocked, and a plurality of air outlet holes are formed in the branch pipes.
3. The silencer for the air separation plant according to claim 2, wherein a connecting sleeve is arranged between the branch pipe and the main pipe, one end of the main pipe is hermetically fixed at the center of one end of the connecting sleeve, and the branch pipe is provided with a connecting sleeve at one end far away from the main pipe.
4. The silencer according to claim 3, wherein the number of the branch pipes is 3, and the branch pipes are arranged in a 'pin' shape on the end face of the connecting sleeve, which is far away from the header pipe.
5. The silencer for an air separation plant according to claim 4, wherein the air outlet holes are respectively opened on circumferential side surfaces of the branch pipes; in the axial direction of the main pipe, air outlet holes arranged on the same branch pipe are uniformly arranged at intervals, and air outlet holes arranged on different branch pipes are alternately and uniformly arranged at intervals; and the air outlet holes arranged on the same branch pipe are uniformly arranged at intervals in the circumferential direction of the branch pipe.
6. The silencer according to claim 2, wherein a trumpet-shaped partition plate is arranged in the header pipe, a large-diameter section of the trumpet-shaped partition plate is fixedly connected with the inner wall of the header pipe, a small-diameter section of the trumpet-shaped partition plate is opened, and the trumpet-shaped partition plate comprises a plurality of trumpet-shaped partition plates which are arranged coaxially with the header pipe and are uniformly spaced in the axial direction of the header pipe.
7. The silencer according to claim 1, wherein flanges are respectively provided at ends of the inlet pipe and the outlet pipe, which are away from the silencer housing, the flange provided at the end of the inlet pipe being a first flange, and the flange provided at the end of the outlet pipe being a second flange.
8. The silencer according to claim 1, wherein a groove is formed in an inner surface of the silencer casing, and silencing cotton is filled in the groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022505273.5U CN214123487U (en) | 2020-11-03 | 2020-11-03 | Silencer for air separation plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022505273.5U CN214123487U (en) | 2020-11-03 | 2020-11-03 | Silencer for air separation plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214123487U true CN214123487U (en) | 2021-09-03 |
Family
ID=77501711
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022505273.5U Active CN214123487U (en) | 2020-11-03 | 2020-11-03 | Silencer for air separation plant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214123487U (en) |
-
2020
- 2020-11-03 CN CN202022505273.5U patent/CN214123487U/en active Active
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