Silencer for air separation equipment

Abstract

The utility model discloses a silencer for air separation equipment, which relates to the technical field of silencing equipment and comprises a silencing cylinder, a first connecting cylinder fixedly mounted at one end of the silencing cylinder, a second connecting cylinder fixedly mounted at the other end of the silencing cylinder, an air inlet pipe fixedly mounted at one end of the first connecting cylinder, and an air outlet plate fixedly mounted at one end of the second connecting cylinder. A mounting pipe is movably mounted in the air inlet pipe, a plurality of interference plates are arranged in the silencing barrel, and connecting columns are movably connected between the interference plates. The multiple interference plates are arranged in the silencing barrel, the air guide pipes in the multiple interference plates are arranged in a staggered mode, the staggered air guide pipes can enable sound waves passing through the silencer to undergo complex path changes when penetrating through different pore plates for multiple times, and when penetrating through the air guide pipes every time, the sound waves can impact on another interference plate through the air guide pipes and are scattered; and the energy of sound waves can be dispersed to all directions, and the directly transmitted sound energy is reduced, so that the effects of attenuating the sound wave energy and reducing the noise are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of silencing equipment, in particular to a silencer for an air separation device. Background Art

[0002] An air separation device is a large industrial device that uses air as a raw material and separates oxygen, nitrogen, argon, and other rare gases through a complex physical process. It is separated by the cryogenic method based on the different liquefaction temperatures and boiling points of air components at low temperatures.

[0003] When the air separation device is working, after a series of processes such as compression, cooling, expansion, and separation, the gas is discharged at high speed from the air outlet. Moreover, when the gas flows through pipelines, valves, or encounters any obstacles, turbulence will be generated, forming high-speed airflow noise. Therefore, the Chinese utility model patent with the publication number CN215183057U: a silencer for an air separation device. In this application, a spiral structure is arranged in the reducing pipe to disperse the discharged gas in a spiral manner, and then the gas is dispersed again through a gas dispersion plate, greatly reducing the flow rate of the discharged gas and avoiding the impact of the concentrated airflow on the internal air guide pipe and orifice plate. However, since the gas is dispersed by two parts, namely the spiral structure and the gas dispersion plate, in this application, when the gas pressure is too high, the flow rate of the gas impacting the gas dispersion plate will be too high, so that after the gas enters the air guide pipe, it is discharged through the round holes on the inner wall of the air guide pipe, which will reduce the exhaust flow rate and affect the normal air separation amount of the air separation device. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a silencer for an air separation device, which can effectively solve the problems in the background art.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0006] A silencer for an air separation device includes a silencing cylinder. One end of the silencing cylinder is fixedly installed with a first connecting cylinder, and the other end of the silencing cylinder is fixedly installed with a second connecting cylinder. One end of the first connecting cylinder is fixedly installed with an air inlet pipe, and one end of the second connecting cylinder is fixedly installed with an air outlet plate. An installation pipe is movably installed in the air inlet pipe. A plurality of interference plates are arranged in the silencing cylinder, and a connecting column is movably connected between the plurality of interference plates. One end of the connecting column is movably installed with an installation frame, and the installation frame is fixedly installed between the silencing cylinder and the second connecting cylinder, that is, the interference plates are movably installed in the silencing cylinder through the connecting column and the installation frame.

[0007] As a further preferred embodiment of the present utility model, a sound insulation cotton is laid inside the silencing cylinder, and sound insulation cotton is also laid inside the first connecting cylinder and the second connecting cylinder respectively. Through the setting of the sound insulation cotton, the sound insulation and sound absorption effects of the silencing cylinder and the first connecting cylinder can be improved.

[0008] As a further preferred embodiment of the present utility model, an embedding groove is provided at one end of the air inlet pipe.

[0009] As a further preferred embodiment of the present utility model, a sealing ring is fixedly installed at one end of the installation pipe, and a plurality of wave flow retarder plates are fixedly installed inside the installation pipe. The installation pipe is inserted into the air inlet pipe, and the sealing ring is inserted into the embedding groove. Through the setting of the installation pipe and the wave flow retarder plates, the direction and speed of the air flow can be changed, which helps to reduce the wind noise.

[0010] As a further preferred embodiment of the present utility model, the mounting bracket includes a first mounting ring and a second mounting ring. A plurality of connecting rods are fixedly connected between the first mounting ring and the second mounting ring. A limiting groove is provided on one side of the second mounting ring, and the first mounting ring is fixedly installed between two flanges on the opposite sides of the silencing cylinder and the second connecting cylinder.

[0011] As a further preferred embodiment of the present utility model, a plurality of air guide pipes are fixedly installed on one side of the interference plate. A plurality of clamping grooves are provided on the outer side of the connecting column. A stud is fixedly installed on one side of the connecting column. The interference plate is inserted on the connecting column between two clamping grooves, and a clamping spring is installed in the clamping groove. The air guide pipes on one side of the plurality of interference plates are arranged staggeredly. One side of the connecting column is inserted into the limiting groove, and the stud passes through a through hole in the limiting groove and extends to the other side of the second mounting ring and is threadedly connected with a nut. With the setting of the plurality of interference plates, continuous change of acoustic impedance can be realized, which helps better conversion and dissipation of acoustic wave energy between gas and solid media, thereby reducing noise.

[0012] Compared with the prior art, the present utility model has the following beneficial effects:

[0013] For the silencer for air separation equipment of the present utility model, first, an installation pipe is arranged in the air inlet pipe, and a plurality of wave flow retarder plates are arranged in the installation pipe, which can change the direction and speed of the air flow, help to reduce the wind noise, improve the smoothness of air flow, and thus reduce noise;

[0014] Meanwhile, a plurality of interference plates are arranged in the muffler cylinder, and the air ducts in the plurality of interference plates are arranged in a staggered manner. The staggered air ducts can enable the sound waves passing through the muffler to experience complex path changes when passing through different orifice plates multiple times. Each time the sound waves pass through the air ducts, they will hit another interference plate through the air ducts and scatter, which will disperse the energy of the sound waves in all directions, reduce the directly transmitted sound energy, thereby achieving the effect of attenuating the sound wave energy and reducing the noise, and ensuring the amount of gas discharged without affecting the normal operation of the air separation equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic diagram of the main structure of the present invention;

[0016] Figure 2 is a cross-sectional view of the main structure of the present invention;

[0017] Figure 3 is a cross-sectional view of the installation pipe of the present invention;

[0018] Figure 4 is a schematic diagram of the structure of the mounting bracket of the present invention;

[0019] Figure 5 is a schematic diagram of the structure of the interference plate and the connecting column of the present invention.

[0020] In the figure: 1, muffler cylinder; 2, first connecting cylinder; 3, second connecting cylinder; 4, intake pipe; 5, air outlet plate; 6, installation pipe; 7, interference plate; 8, connecting column; 9, mounting bracket; 10, sound insulation cotton; 11, embedding groove; 12, sealing ring; 13, wave flow retarder plate; 14, first mounting ring; 15, second mounting ring; 16, connecting rod; 17, limiting groove; 18, air duct; 19, clamping groove; 20, stud; 21, snap ring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] In order to make the technical means, creative features, achieved purposes and effects of the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0022] As Figures 1-5 shown, a muffler for an air separation device provided by the present invention includes a muffler cylinder 1. A first connecting cylinder 2 is fixedly installed at one end of the muffler cylinder 1, a second connecting cylinder 3 is fixedly installed at the other end of the muffler cylinder 1. An intake pipe 4 is fixedly installed at one end of the first connecting cylinder 2, an air outlet plate 5 is fixedly installed at one end of the second connecting cylinder 3. An installation pipe 6 is movably installed in the intake pipe 4. A plurality of interference plates 7 are arranged in the muffler cylinder 1, and a connecting column 8 is movably connected between the plurality of interference plates 7. One end of the connecting column 8 is movably installed with a mounting bracket 9, and the mounting bracket 9 is fixedly installed between the muffler cylinder 1 and the second connecting cylinder 3, that is, the interference plate 7 is movably installed in the muffler cylinder 1 through the connecting column 8 and the mounting bracket 9.

[0023] As Figures 2-3 shown, a sound insulation cotton 10 is laid inside the muffler cylinder 1, and the sound insulation cotton 10 is also laid inside the first connecting cylinder 2 and the second connecting cylinder 3 respectively. Through the arrangement of the sound insulation cotton 10, the sound insulation and sound absorption effects of the muffler cylinder 1 and the first connecting cylinder 2 can be improved. An embedding groove 11 is opened at one end of the air inlet pipe 4, a sealing ring 12 is fixedly installed at one end of the installation pipe 6, and a plurality of wavy flow retarder plates 13 are fixedly installed inside the installation pipe 6. The installation pipe 6 is inserted into the air inlet pipe 4, and the sealing ring 12 is inserted into the embedding groove 11. Through the arrangement of the installation pipe 6 and the wavy flow retarder plates 13, the direction and speed of the air flow can be changed, which helps to reduce the wind noise;

[0024] As Figure 2 、 Figures 4-5 shown, the mounting bracket 9 includes a first mounting ring 14 and a second mounting ring 15. A plurality of connecting rods 16 are fixedly connected between the first mounting ring 14 and the second mounting ring 15. A limiting groove 17 is opened on one side of the second mounting ring 15, and the first mounting ring 14 is fixedly installed between two flanges on the opposite sides of the muffler cylinder 1 and the second connecting cylinder 3. A plurality of air guide pipes 18 are fixedly installed on one side of the interference plate 7. A plurality of clamping grooves 19 are opened on the outer side of the connecting column 8. A stud 20 is fixedly installed on one side of the connecting column 8. The interference plate 7 is inserted into the connecting column 8 located between two clamping grooves 19, and a snap spring 21 is clamped in the clamping groove 19. The air guide pipes 18 on one side of the plurality of interference plates 7 are arranged staggeredly. One side of the connecting column 8 is inserted into the limiting groove 17, and the stud 20 passes through a through hole in the limiting groove 17 and extends to the other side of the second mounting ring 15 and is threadedly connected with a nut. With the arrangement of the plurality of interference plates 7, continuous change of the acoustic impedance can be realized, which helps to better convert and dissipate the acoustic wave energy between the gas and solid media, thereby reducing the noise.

[0025] It should be noted that the present utility model is a muffler for an air separation device. One end of the air inlet pipe 4 is connected to the exhaust end of the air separation device through a flange. Thus, the sealing ring 12 is limited in the embedding groove 11 through the air inlet pipe 4 and the exhaust end of the air separation device, and the fixing of the installation pipe 6 can be completed. When the gas passes through the plurality of wavy flow retarder plates 13 inside the installation pipe 6, the direction and speed of the air flow can be changed, which helps to reduce the wind noise, improve the smoothness of the air flow, and thus reduce the noise. When the air flow enters the muffler cylinder 1 through the installation pipe 6, first, the gas is buffered by the first layer of interference plate 7, and is shunted to the muffler cylinder 1 located between two of the interference plates 7 through the plurality of air guide pipes 18 on one side of the interference plate 7. And because the air guide pipes 18 on one side of the two interference plates 7 are arranged staggeredly, the air flow is buffered and dispersed for the second time. Then, by the same token as above, after the air flow is further buffered and dispersed by the third layer of interference plate 7, combined with the sound insulation cotton 10 inside the muffler cylinder 1, the first connecting cylinder 2, and the second connecting cylinder 3, the noise of the gas discharge can be effectively reduced.

[0026] The foregoing has shown and described the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above-mentioned embodiments, and what is described in the above-mentioned embodiments and the specification is only to illustrate the principle of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A silencer for an air separation plant, characterized in that: The invention comprises a silencer (1), wherein a first connecting tube (2) is fixedly mounted on one end of the silencer (1), and a second connecting tube (3) is fixedly mounted on the other end of the silencer (1); an air inlet pipe (4) is fixedly mounted on one end of the first connecting tube (2), and an air outlet plate (5) is fixedly mounted on one end of the second connecting tube (3); a mounting tube (6) is movably mounted in the air inlet pipe (4); a plurality of interference plates (7) are arranged in the silencer (1), and a connecting column (8) is movably connected between the plurality of interference plates (7); a mounting frame (9) is movably mounted on one end of the connecting column (8); and the mounting frame (9) is fixedly mounted between the silencer (1) and the second connecting tube (3), that is, the interference plate (7) is movably mounted in the silencer (1) via the connecting column (8) and the mounting frame (9).

2. The muffler for an air separation plant according to claim 1, characterized in that: The inner side of the silencer tube (1) is paved with sound insulation cotton (10), and the inner sides of the first connecting tube (2) and the second connecting tube (3) are also paved with sound insulation cotton (10).

3. The silencer for an air separation plant according to claim 1, characterized in that: An embedding groove (11) is provided at one end of the air inlet pipe (4).

4. A silencer for an air separation plant according to claim 3, characterized in that: A sealing ring (12) is fixedly mounted on one end of the mounting tube (6), a plurality of wave slowing plates (13) are fixedly mounted inside the mounting tube (6), the mounting tube (6) is inserted and mounted in the air intake pipe (4), and the sealing ring (12) is inserted and mounted in the embedding groove (11).

5. The silencer for an air separation plant according to claim 1, characterized in that: The mounting frame (9) comprises a first mounting ring (14) and a second mounting ring (15), a plurality of connecting rods (16) being fixedly connected between the first mounting ring (14) and the second mounting ring (15), a limiting groove (17) being provided on one side of the second mounting ring (15), and the first mounting ring (14) being fixedly mounted between two flanges on opposite sides of the silencer cylinder (1) and the second connecting cylinder (3).

6. A silencer for an air separation plant according to claim 5, characterized in that: A plurality of air guide tubes (18) are fixedly mounted on one side of the interference plate (7), a plurality of slots (19) are formed on the outer side of the connecting column (8), a stud (20) is fixedly mounted on one side of the connecting column (8), the interference plate (7) is inserted and mounted on the connecting column (8) between the two slots (19), and a retaining spring (21) is fixedly mounted in the slot (19), and the plurality of air guide tubes (18) on one side of the interference plate (7) are arranged in a staggered manner, one side of the connecting column (8) is inserted and mounted in the limiting slot (17), and the stud (20) passes through a through hole in the limiting slot (17) and extends to the other side of the second mounting ring (15) and is threadedly connected with a nut.

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