Silencing air separation plant

Abstract

The utility model discloses an anechoic air separation equipment relates to air separation equipment noise reduction technical field, including outer tube and ventilation pipe, and the common installation of noise reduction layer between outer tube and ventilation pipe, and the inboard wall of ventilation pipe is fixedly connected with a plurality of downcomer strip, and the common setting of noise reduction assembly between ventilation pipe and noise reduction layer, through the cooperation of the multiple damper of setting in the setting of noise reduction assembly, can effectively absorb and weaken these noises, and multiple damper acts on fixed plate together, can improve the stability of ventilation pipe in the use process, further reduce noise pollution, and the noise reduction layer of glass fiber material can effectively absorb and weaken the high frequency noise generated in the exhaust process, and the downcomer strip in ventilation pipe is spiral design, and the spiral downcomer strip can guide air to form more stable, uniform airflow in ventilation pipe, reduces the eddy current and turbulent flow phenomenon, and effectively reduces the noise level.

Description

Technical Field

[0001] This utility model relates to the field of noise reduction technology for air separation equipment, and in particular to a noise-reducing air separation equipment. Background Technology

[0002] An air separation unit is a device used to separate and purify different gaseous components in air. It uses air as raw material, transforming it into a liquid state through compression circulation, deep freezing, and other methods. Then, through processes such as distillation, it gradually separates inert gases such as oxygen, nitrogen, and argon, as well as rare gases such as helium, neon, and krypton, from the liquid air.

[0003] Air separation equipment generates significant noise during operation, with the compressor and exhaust pump being among the primary sources. During the compression and discharge of gas, the compressor creates turbulence and friction, generating airflow noise. This noise is broadband and high-intensity. Furthermore, the compressor's motor produces electromagnetic and mechanical noise, further increasing the overall noise level. Similarly, the exhaust pump generates mechanical vibration and airflow noise during operation, causing noise pollution to the surrounding environment.

[0004] A search revealed a Chinese utility model patent with patent number CN215183057U, which discloses a silencer for air separation equipment. Compared with existing technologies, this utility model patent with Chinese patent number CN215183057U achieves the following improvements: by setting a spiral structure inside the variable diameter pipe to spirally disperse the emitted gas, and then further disperse it through a gas dispersion plate, the flow rate of the emitted gas is reduced, avoiding the impact of concentrated airflow on the internal gas guide pipe and perforated plate; by setting a ring of reinforcing positioning steel bars between the shell and the silencer perforated plate, the internal support strength is increased, ensuring the good noise reduction effect of the silencer perforated plate.

[0005] However, in actual use, the reduced flow rate of the exhaust gas may cause temperature changes in the gas. During the operation of the air separation equipment, the air temperature needs to be strictly controlled, which may lead to poor air separation effect in the later stage. At the same time, since the noise is mainly caused by the vibration generated by the gas impacting the exhaust pipe, although the reinforcing ribs used in the above process improve the stability of the exhaust pipe to a certain extent, they are not easy to absorb the vibration generated by the exhaust pipe, which may result in an insignificant noise reduction effect. Therefore, a silencer air separation equipment is proposed. Utility Model Content

[0006] The purpose of this invention is to address the shortcomings of existing technologies, such as poor noise reduction due to difficulty in absorbing vibrations, and to propose a noise-absorbing air separation device.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A noise-reducing air separation unit includes an outer pipe and a ventilation pipe. A noise reduction layer is installed between the outer pipe and the ventilation pipe. Multiple flow strips are fixedly connected to the inner wall of the ventilation pipe. A noise reduction component is provided between the ventilation pipe and the noise reduction layer. The noise reduction component is used for vibration damping and noise reduction of the ventilation pipe. The noise reduction component includes multiple fixed plates that are symmetrically slidably arranged on the circumference of the ventilation pipe. Multiple angle-variable clamping arms are provided between the outer pipe and the fixed plates. A first spring damper with variable angle and telescopic capability is provided between the outer pipe and the clamping arms. A second spring damper is installed between two adjacent fixed plates. The first spring damper and the second spring damper are used to reduce vibration in multiple directions.

[0009] The above technical solution further includes:

[0010] A sliding cylinder is installed between two adjacent fixed plates. Multiple grooves are formed on the outer circumference of the noise reduction layer. The first spring damper, the clamping arm, the sliding cylinder, and the second spring damper are all located inside the grooves. Multiple flow strips are spiral in shape.

[0011] The noise reduction component also includes multiple telescopic grooves opened on the side of the fixing plate near the ventilation duct, and multiple guide wheels are rolled inside the telescopic grooves, with the multiple guide wheels fitting together with the ventilation duct.

[0012] Multiple first support rotating plates are fixedly connected to the inner side of the outer tube. The first support rotating plates are symmetrically distributed in a circle. Multiple fixed plates are fixedly connected to a second support rotating plate on the side near the outer tube. The first support rotating plates and the second support rotating plates are rotatably connected to the clamping arm.

[0013] Multiple first fixing plates are fixedly connected to the inner side of the outer tube. The first fixing plates are symmetrically distributed in a circle. Multiple clamping arms are fixedly connected to second fixing plates on the side near the flow strip.

[0014] The inner side of the first fixed clamping plate is rotatably connected to a first rotating block, and the inner side of the second fixed clamping plate is rotatably connected to a second rotating block. The second fixed clamping plate and the second rotating block are together fixedly connected to the first spring damper.

[0015] Two fixed plates on the same horizontal direction are fixedly connected to fixed blocks. Push blocks are rotatably connected to the inner side of the two fixed blocks. The two push blocks are fixedly connected to the second spring damper and slide relative to the slide cylinder.

[0016] Flange interfaces are symmetrically fixedly connected to the outer side of the outer tube.

[0017] This utility model has the following beneficial effects:

[0018] 1. In this utility model, when high-temperature and high-pressure gas flows in the ventilation duct, it will generate strong vibration and noise. Through the combined action of multiple dampers in the noise reduction component, these noises can be effectively absorbed and reduced. At the same time, the multiple dampers work together on the fixed plate to improve the stability of the ventilation duct during use and further reduce noise pollution.

[0019] 2. In this utility model, the noise reduction layer is made of glass fiber, which has good high temperature resistance and corrosion resistance. It can effectively absorb and reduce the high-frequency noise generated during the exhaust process. At the same time, the flow strip inside the ventilation duct is designed in a spiral shape. The spiral flow strip can guide the air to form a more stable and uniform airflow inside the ventilation duct, reducing the generation of eddies and turbulence. Eddies and turbulence are one of the main sources of noise in the ventilation duct. By reducing these phenomena, the noise level can be effectively reduced. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of a noise-reducing air separation device proposed in this utility model;

[0021] Figure 2 This is a schematic diagram of the internal structure of the outer tube in this utility model;

[0022] Figure 3 This is a schematic diagram of the noise reduction component and ventilation duct structure in this utility model;

[0023] Figure 4 This is a schematic diagram of the internal structure of the ventilation pipe in this utility model;

[0024] Figure 5 This is a schematic diagram of the overall structure of the noise reduction component in this utility model;

[0025] Figure 6 This is a schematic diagram of the noise reduction component in this utility model.

[0026] In the diagram: 1. Flange interface; 2. Outer pipe; 3. Ventilation pipe; 4. Noise reduction layer; 5. Fixing plate; 6. Flow strip; 7. First rotating block; 8. First spring damper; 9. Second fixing clamp; 10. Second rotating block; 11. First support rotating plate; 12. Pressing arm; 13. Second support rotating plate; 14. Telescopic groove; 15. Guide wheel; 16. Fixing block; 17. Slide cylinder; 18. Pushing block; 19. Second spring damper; 20. Groove; 21. First fixing clamp. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Example

[0029] like Figures 1-6 As shown, the present invention proposes a noise-reducing air separation device, including an outer pipe 2 and a ventilation pipe 3. A noise reduction layer 4 is installed between the outer pipe 2 and the ventilation pipe 3. Multiple flow strips 6 are fixedly connected to the inner side wall of the ventilation pipe 3. A noise reduction component is provided between the ventilation pipe 3 and the noise reduction layer 4. The noise reduction component is used for vibration reduction and noise reduction of the ventilation pipe 3. The noise reduction component includes multiple fixed plates 5 that are symmetrically slidably arranged on the circumference of the ventilation pipe 3. Multiple angle-variable clamping arms 12 are provided between the outer pipe 2 and the fixed plates 5. An angle-variable and telescopic first spring damper 8 is provided between the outer pipe 2 and the clamping arms 12. A second spring damper 19 is installed between two adjacent fixed plates 5. The first spring damper 8 and the second spring damper 19 are used to reduce vibration in multiple directions.

[0030] A slide cylinder 17 is installed between two adjacent fixed plates 5. Multiple grooves 20 are provided on the outer circumference of the noise reduction layer 4. The first spring damper 8, the clamping arm 12, the slide cylinder 17 and the second spring damper 19 are all located inside the grooves 20. Multiple flow strips 6 are spiral in shape.

[0031] This design utilizes multiple first spring dampers 8 and second spring dampers 19 to work together to reduce vibration and noise through practical gaps. At the same time, a noise-reducing layer made of glass fiber absorbs and weakens the high-frequency noise generated during the exhaust process. In addition, the flow strip inside the ventilation duct is designed in a spiral shape, which can guide the air to form a more stable and uniform airflow inside the ventilation duct, reduce the generation of eddies and turbulence, and further reduce the noise level.

[0032] Multiple grooves 20 are provided on the outer circumference of the noise reduction layer 4. The first spring damper 8, the clamping arm 12, the slide cylinder 17 and the second spring damper 19 are all located inside the grooves 20. Multiple flow strips 6 are all spiral-shaped.

[0033] First, during installation, the ventilation pipe 3 is clamped by the fixing plate 5 set in the noise reduction component. Then, the first spring damper 8 and the second spring damper 19 designed can ensure that the fixing plate 5 fits tightly to the ventilation pipe 3.

[0034] The noise reduction component also includes multiple telescopic grooves 14 opened on the side of the fixing plate 5 near the ventilation pipe 3, and multiple guide wheels 15 are rolled inside the telescopic grooves 14, and the multiple guide wheels 15 are in contact with each other with the ventilation pipe 3.

[0035] When high-temperature and high-pressure air passes through the ventilation duct 3, it will generate vibration inside the ventilation duct 3. These vibrations will cause the ventilation duct 3 to move slightly. During the movement of the ventilation duct 3, the expansion groove 14 can reduce the stress changes generated by the vibration on the fixed plate 5. The design of the expansion groove 14 allows the fixed plate 5 to have a certain amount of slight deformation space when subjected to vibration, instead of bearing all the stress completely rigidly. This slight deformation can disperse the stress and reduce the occurrence of stress concentration. The design of the guide wheel reduces the friction between the fixed plate 5 and the ventilation duct 3, making the ventilation duct 3 rotate or move more smoothly.

[0036] Multiple first support rotating plates 11 are fixedly connected to the inner side of the outer tube 2. The first support rotating plates 11 are symmetrically distributed in a circle. Multiple fixed plates 5 are fixedly connected to the side of the outer tube 2 with second support rotating plates 13. The first support rotating plates 11 and the second support rotating plates 13 are rotatably connected to the clamping arm 12.

[0037] Multiple first fixing plates 21 are fixedly connected to the inner side of the outer tube 2. The first fixing plates 21 are symmetrically distributed in a circle. Multiple clamping arms 12 are fixedly connected to the second fixing plates 9 on the side near the flow strip 6.

[0038] The inner side of the first fixed clamping plate 21 is rotatably connected to the first rotating block 7, and the inner side of the second fixed clamping plate 9 is rotatably connected to the second rotating block 10. The second fixed clamping plate 9 and the second rotating block 10 are fixedly connected to the first spring damper 8.

[0039] The first spring damper 8 in this design is always in a compressed state. Therefore, the design of the guide wheel mentioned above makes the ventilation pipe 3 rotate or move more smoothly. This allows the first spring damper 8 to make it easier for the fixing plate 5 to adjust the position of the ventilation pipe 3. When the vibration is too large, the vibration of the ventilation pipe 3 drives the relative extension and contraction of the first spring damper 8. At the same time, the first spring damper 8 drives the angle of the clamping arm 12 to change. The angle change of the clamping arm 12 drives the fixing plate 5 to move, thereby achieving a dynamic vibration reduction effect on the ventilation pipe 3.

[0040] Two fixed plates 5 on the same horizontal direction are fixedly connected to fixed blocks 16. Push blocks 18 are rotatably connected to the inner side of the two fixed blocks 16. The two push blocks 18 are fixedly connected to the second spring damper 19. The two push blocks 18 slide relative to the slide cylinder 17. The slide cylinder 17 only serves as a protective shell.

[0041] During the vibration of the ventilation duct 3, it is not limited to a single dimension, but may occur in multiple dimensions or directions. When the ventilation duct 3 vibrates in multiple dimensions or directions, these vibrations are transmitted to the fixed plate 5. The rotational connection between the fixed block 16 and the pushing block 18 on the fixed plate 5, as well as the relative sliding between the pushing block 18 and the slide cylinder 17, allows the fixed plate 5 to have a certain degree of freedom of movement when subjected to vibration. At the same time, when the fixed plates 5 move closer or further apart, they will cause the pushing block 18 to compress or stretch the second spring damper 19, causing the second spring damper 19 to generate elastic force. After the vibration weakens, the second spring damper 19 can return to its original position. Through this design, even if the ventilation duct 3 vibrates in multiple dimensions or directions, the fixed plate 5 can maintain a relatively stable position and shape.

[0042] Flange interfaces 1 are symmetrically fixedly connected to the outer side of the outer pipe 2. Flange interfaces 1 are used to fix between the compressor and the exhaust pump.

[0043] In this embodiment, the working principle of this design is to comprehensively utilize multiple mechanisms to achieve noise reduction and vibration reduction. In the design, the first spring damper 8 and the second spring damper 19 cooperate with each other to dynamically adjust the position of the fixed plate 5 relative to the ventilation pipe 3, thereby achieving dynamic vibration reduction. The noise reduction layer 4 made of glass fiber further absorbs and weakens high-frequency noise, and the spiral flow strip 6 inside the ventilation pipe guides the air to form a stable airflow, reducing air eddies and turbulence.

[0044] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A silencer-type air separation unit, comprising an outer pipe (2) and a ventilation pipe (3), characterized in that, A noise reduction layer (4) is installed between the outer pipe (2) and the ventilation pipe (3). Multiple flow strips (6) are fixedly connected to the inner wall of the ventilation pipe (3). A noise reduction component is provided between the ventilation pipe (3) and the noise reduction layer (4). The noise reduction component is used for vibration reduction and noise reduction of the ventilation pipe (3). The noise reduction component includes multiple fixed plates (5) that are symmetrically slidably arranged on the ventilation pipe (3). Multiple angle-variable clamping arms (12) are provided between the outer pipe (2) and the fixed plates (5). An angle-variable and telescopic first spring damper (8) is provided between the outer pipe (2) and the clamping arms (12). A second spring damper (19) is installed between two adjacent fixed plates (5). The first spring damper (8) and the second spring damper (19) are used to reduce vibration in multiple directions.

2. The silencer-type air separation unit according to claim 1, characterized in that, A slide cylinder (17) is installed between two adjacent fixed plates (5). Multiple grooves (20) are provided on the outer circumference of the noise reduction layer (4). The first spring damper (8), the clamping arm (12), the slide cylinder (17) and the second spring damper (19) are all located inside the grooves (20). Multiple flow strips (6) are spiral in shape.

3. The silencer-type air separation unit according to claim 1, characterized in that, The noise reduction assembly also includes multiple telescopic grooves (14) opened on the side of the fixing plate (5) near the ventilation pipe (3). Multiple guide wheels (15) are rolled on the inner side of the telescopic grooves (14), and the multiple guide wheels (15) are in contact with each other with the ventilation pipe (3).

4. The silencer-type air separation unit according to claim 3, characterized in that, Multiple first support rotating plates (11) are fixedly connected to the inner side of the outer tube (2). The first support rotating plates (11) are symmetrically distributed in a circle. Multiple fixed plates (5) are fixedly connected to a second support rotating plate (13) on the side near the outer tube (2). The first support rotating plate (11) and the second support rotating plate (13) are rotatably connected to the clamping arm (12).

5. A silencer-type air separation unit according to claim 4, characterized in that, The inner side of the outer tube (2) is fixedly connected with a plurality of first fixing plates (21), the first fixing plates (21) are symmetrically distributed in a circle, and the sides of the plurality of pressing arms (12) near the flow strip (6) are fixedly connected with second fixing plates (9).

6. A silencer-type air separation unit according to claim 5, characterized in that, The first fixed clamp (21) is rotatably connected to the inner side of the first rotating block (7), and the second fixed clamp (9) is rotatably connected to the inner side of the second rotating block (10). The second fixed clamp (9) and the second rotating block (10) are fixedly connected to the first spring damper (8).

7. A silencer-type air separation unit according to claim 5, characterized in that, Two fixed plates (5) on the same horizontal direction are fixedly connected to fixed blocks (16), and push blocks (18) are rotatably connected to the inner side of the two fixed blocks (16). The two push blocks (18) are fixedly connected to the second spring damper (19), and the two push blocks (18) slide relative to the slide cylinder (17).

8. A silencer-type air separation unit according to claim 1, characterized in that, The outer tube (2) is symmetrically fixedly connected to flange interfaces (1) on its outer side.

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