A retention chamber for gas mixture separation

Abstract

This utility model relates to the field of fluid separation technology, and more particularly to a retention chamber for separating mixed gases. The retention chamber has a hollow structure and can be positioned radially distal to the center of rotation of a primary separation device, rotating coaxially and synchronously with the primary separation device, and the two are connected. A Brownian motion suppressor is provided circumferentially inside the retention chamber, which effectively prevents the remixing of different gas components after separation, improving separation efficiency. Simultaneously, the retention chamber has a first end and a second end arranged axially inclined, with the internal space gradually increasing from the first end to the second end. A first exhaust port is located radially proximal to the first end, and a second exhaust port is located radially distal to the second end. This inclined shape allows different gas components to accumulate in different areas, which is beneficial for improving the purity of the separated gas and facilitates disassembly. This retention chamber has a simple overall structure and small size, and can be used to improve various traditional centrifuge devices on the market.

Description

Technical Field

[0001] This utility model relates to the field of fluid separation technology, and in particular to a retention chamber for separating mixed gases. Background Technology

[0002] Currently, the separation of mixed gases is involved in many fields, such as coal chemical production, biogas desulfurization, mining production, natural gas heavy hydrocarbon removal, and power plant tail gas pollutant separation. Meanwhile, the requirements for separation efficiency and purity of mixed gases are increasingly stringent. Traditional centrifugal separators mostly achieve separation by simply using centrifugal force to cause different gas molecules to stratify. To further improve separation efficiency, some devices have numerous internal ribs to keep the mixed gas in a weakly disturbed state, minimizing the remixing of stratified gas molecules. However, the separation effect is still unsatisfactory. Repeatedly setting up multiple stages of separation results in overly complex structures and increases both cost and energy consumption.

[0003] Therefore, there is an urgent need for equipment that can effectively improve the separation efficiency and purity of mixed gases. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a retention chamber for the separation of mixed gases, which solves the technical problems of poor separation efficiency and low purity of traditional separation devices, and the addition of multiple separation stages will lead to complex structure and high cost.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, the main technical solutions adopted by this utility model include:

[0008] In a first aspect, embodiments of this utility model provide a retention chamber for separating mixed gases. The retention chamber is a hollow structure that can be positioned radially distal to the center of rotation of a primary separation device and rotates coaxially and synchronously with the primary separation device. The retention chamber is connected to the primary separation device. A Brownian motion suppressor is provided circumferentially inside the retention chamber; the Brownian motion suppressor is a layered structure with several micropores.

[0009] The indwelling cavity has a first end and a second end that are inclined along the axial direction, and the internal space of the indwelling cavity gradually increases from the first end to the second end. The first end has a first exhaust port at its radially proximal end, and the second end has a second exhaust port at its radially distal end.

[0010] Optionally, the first exhaust port is located on the side of the Brownian motion suppressor 3 closer to the primary separation device, and the second exhaust port is located on the side of the Brownian motion suppressor away from the primary separation device.

[0011] Optionally, the indwelling cavity is provided with a circumferentially extending baffle assembly, which is parallel to the inner wall of the radially distal end of the indwelling cavity. The baffle assembly includes a fixed base plate and a movable base plate arranged parallel to each other and allowing gas passage. The fixed base plate is fixedly connected to the inner wall of the radially distal end of the indwelling cavity via a fixing part located at its radially distal end, and a channel for gas flow is provided between the fixed base plate and the inner wall of the indwelling cavity. A mounting frame is formed at the radially proximal end of the fixed base plate, and the movable base plate is detachably fixed to the mounting frame. An installation space is formed between the fixed base plate and the movable base plate, and a Brownian motion suppressor is disposed within the installation space.

[0012] Optionally, the radial distance of the installation space is between 5mm and 25mm, and the Brownian motion suppressor is composed of 5-20 stacked layers of asbestos cloth, with micropore sizes on the asbestos cloth between 1μm and 10μm. The Brownian motion suppressor is fixed by compression using a fixed substrate and a movable substrate.

[0013] Optionally, the Brownian motion suppressor and the diaphragm assembly are simultaneously divided into several identical diaphragm units along the circumferential direction by several partition plates. The radially distal ends of the partition plates are all fixedly connected to the inner wall of the indwelling cavity, and the radially proximal ends are all fixedly connected to the primary separation device. Furthermore, gas channels connecting two adjacent diaphragm units are provided at the positions where the partition plates connect with the indwelling cavity and the primary separation device.

[0014] The movable base plate in each partition unit is detachably fixed to the fixed base plate in the same partition unit via an independent mounting frame, and the Brownian motion suppressor in each partition unit is independently pressed into the mounting space in the partition unit.

[0015] Optionally, each partition unit has an n-shaped frame formed at the radially proximal end of the fixed base plate, and both vertical sides of the n-shaped frame are fixedly connected to the partition plate. Slide grooves are provided on opposite sides of the two vertical sides of the n-shaped frame, and the movable base plate is slidably disposed within these slide grooves.

[0016] Optionally, the outer wall of the fixing base plate is provided with a fixing rib extending along the axial direction. The outer edge of the fixing rib is concave-convex, and the protruding part constitutes the fixing part of the fixing base plate. The radially distal end of the partition plate is provided with a convex plate spaced along the axial direction. The partition plate is fixedly connected to the inner wall of the radially distal end of the indwelling cavity through the convex plate. The fixing part and the radially distal end of the convex plate both penetrate into the inner wall of the indwelling cavity for welding and fixing.

[0017] Optionally, each partition unit has a reinforcing rib penetrating the movable base plate at the midpoint between the partition plates on both sides. The radially distal end of the reinforcing rib is connected to the fixed base plate, and the radially proximal end is connected to the outer wall of the primary separation device. The reinforcing rib is fixedly connected to the movable base plate. The side of the reinforcing rib closest to the fixed base plate has several first through holes of the same size, and the side of the reinforcing rib closest to the primary separation device has several second through holes that gradually increase in size from the first end to the second end.

[0018] Optionally, each partition unit is provided with a first exhaust pipe communicating with a first exhaust port and a second exhaust pipe communicating with a second exhaust port at a position midway between the two partition plates. Both the first and second exhaust pipes extend to a position close to the rotation center. The partition assembly is provided with a U-shaped clearance groove corresponding to the position of the second exhaust pipe.

[0019] Optionally, the retention chamber is an annular structure that can be fitted onto the outside of the primary separation device, with the inner side of the retention chamber serving as the air inlet. The retention chamber includes an upper cover plate and an end plate inclined from a first end to a second end. The upper cover plate has a first flange and a second flange facing the primary separation device at its left and right ends along its inclined direction, respectively. The length of the first flange is greater than the length of the second flange. The free end of the first flange is detachably connected to the primary separation device, and the free end of the second flange is detachably connected to the primary separation device via the end plate. The upper cover plate, the end plate, and the outer wall of the primary separation device together form the cavity of the retention chamber.

[0020] (III) Beneficial Effects

[0021] The beneficial effects of this utility model are:

[0022] This invention discloses a retention chamber for separating mixed gases. By placing a retention chamber at the radially distal end of a traditional centrifugal separator, which allows for further purification and separation, the overall separation efficiency and purity of the equipment are improved. Both the primary and secondary components share a common rotation center, resulting in a compact structure that does not significantly increase volume. Positioning the retention chamber at the radially distal end of the primary separation unit facilitates the collection of the mixed gas after primary separation and allows the separated gas to receive greater centrifugal force for further separation. The retention chamber is designed with an inclined shape along the rotation axis and incorporates a Brownian motion suppressor. This suppressor effectively inhibits Brownian motion between gas molecules, preventing the remixing of different gas components and improving separation efficiency. The inclined shape also allows different gas components to accumulate in different areas, contributing to higher purity after separation and facilitating disassembly. This retention chamber has a simple overall structure and small size, significantly improving the separation efficiency and purity of the original primary separation unit without increasing energy consumption or adding excessive costs. It has a wide range of applications and can be used to improve various traditional centrifugal devices on the market. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of an embodiment 1 of the present invention, a retention chamber for separating mixed gases, applied to a primary separation device;

[0024] Figure 2 for Figure 1 The indwelling cavity in the diagram is used in the cross-sectional view of the primary separation device;

[0025] Figure 3 for Figure 2 A magnified view of the indwelling cavity applied to the primary separation device;

[0026] Figure 4 for Figure 2 A schematic diagram of a partition unit in the indwelling cavity (with the top cover and end plate hidden);

[0027] Figure 5 This is a schematic diagram of embodiment 2 of the present invention, which is a retention chamber for separating mixed gases.

[0028] [Explanation of Labels in the Attached Image]

[0029] 1: Indwelling cavity; 101: First end; 102: Second end;

[0030] 2: Primary separation device; 201: Rotation center

[0031] 3: Brownian motion inhibitor;

[0032] 4: Partition assembly; 41: Fixed base plate; 411: n-shaped frame; 412: Slide groove; 413: Fixed rib plate; 42: Movable base plate; 43: Installation space; 44: U-shaped clearance groove;

[0033] 5: Divider;

[0034] 6: Partition unit;

[0035] 7: Convex plate;

[0036] 8: Rib plate; 81: First through hole; 82: Second through hole;

[0037] 9: First exhaust pipe;

[0038] 10: Second exhaust pipe;

[0039] 11: Top cover plate; 111: First flange; 112: Second flange;

[0040] 12: End plate. Detailed Implementation

[0041] To better explain and facilitate understanding of this utility model, a detailed description of its specific embodiments is provided below with reference to the accompanying drawings. In this document, directional terms such as "upper," "lower," "left," and "right" are used interchangeably. Figure 1 The orientation is used as a reference.

[0042] This invention proposes a retention chamber for separating mixed gases. By placing a retention chamber at the radially distal end of a traditional centrifugal separator, which allows for further purification and separation, the overall separation efficiency and purity of the equipment are improved. Both the primary and secondary components share a common rotation center, resulting in a compact structure that does not significantly increase volume. Positioning the retention chamber at the radially distal region of the primary separation unit facilitates the collection of the mixed gas after primary separation and allows the separated gas to receive greater centrifugal force for further separation. The retention chamber is designed with an inclined shape along the rotation axis and incorporates multiple layers of Brownian motion suppressors. These suppressors effectively inhibit Brownian motion between gas molecules, preventing the remixing of different gas components and improving separation efficiency. The inclined shape also allows different gas components to accumulate in different areas, contributing to higher purity after separation. This retention chamber has a simple overall structure and significantly improves the separation efficiency and purity of the original primary separation unit without increasing costs or energy consumption. Furthermore, it has a wide range of applications and can be used to improve various traditional centrifugal devices on the market.

[0043] To better understand the above technical solutions, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the present invention can be understood more clearly and thoroughly, and that the scope of the present invention can be fully conveyed to those skilled in the art.

[0044] Example 1:

[0045] Reference Figures 1 to 4This embodiment provides a retention chamber 1 for separating mixed gases. The retention chamber 1 is a hollow structure that can be located at the radially distal end of the primary separation device 2 relative to its rotation center 201 and communicate with the primary separation device 2. For example, the primary separation device 2 is a disc-shaped or spherical structure, and the retention chamber 1 can be an annular structure fitted at the maximum radius of the primary separation device 2. The inner side of the retention chamber 1 is the air inlet end. Preferably, a through hole can be opened in the wall surface where the primary separation device 2 and the retention chamber 1 meet to allow communication between the retention chamber 1 and the primary separation device 2. The primary separation device 2 is an existing centrifugal separation device, which can be a single-stage separation or a multi-stage separation. This embodiment does not limit the primary separation device 2 itself, nor does it involve any improvement to the primary separation device 2 itself. Therefore, the term "primary" is only relative to the retention chamber 2.

[0046] The indwelling chamber 1 and the primary separation device 2 rotate synchronously on the same axis, that is, they share a common center of rotation and have the same direction and speed of rotation. No additional power source is required, the structure is very compact, and the volume will not be increased too much. This allows for further separation of the gas separated by the primary separation device 2 to improve the efficiency and purity of gas separation.

[0047] The indwelling cavity 1 includes an upper cover plate 11 and an end plate 12, and has a first end 101 and a second end 102 inclined along the axial direction (i.e., the direction of the axis of rotation). The upper cover plate 11 is inclined from the first end 101 to the second end 102, so that the internal space of the indwelling cavity 1 gradually increases from the first end 101 to the second end 102. A first flange 111 and a second flange 112 facing the primary separation device 2 are respectively provided at the left and right ends of the upper cover plate 11 along its inclined direction. The length of the first flange 111 is greater than the length of the second flange 112. The free end of the first flange 111, i.e., the end closest to the primary separation device 2, can be detachably connected to the primary separation device 2 by bolts. In practical applications, a connecting plate can be welded to the corresponding position on the outer wall of the primary separation device 2 to facilitate the connection between the first flange 111 and the primary separation device 2. The free end of the second flange 112 is detachably connected to the primary separation device 2 via the end plate 12. Specifically, the free end of the second flange 112 is detachably connected to the radially distal end of the end plate 12 via bolts, and the radially proximal end of the end plate 12 is detachably connected to the primary separation device 2 via bolts, similar to the first flange 111. Here, a connecting plate can also be welded to the corresponding position on the outer wall of the primary separation device 2 to facilitate the connection between the end plate 12 and the primary separation device 2. The upper cover plate 11, the end plate 12, and the outer wall surface of the primary separation device 2 together enclose the cavity of the indwelling chamber 1.

[0048] Inside the retention chamber 1, a Brownian motion suppressor 3 is provided circumferentially. This Brownian motion suppressor 3 is a layered structure with several micropores. It should be noted that Brownian motion refers to the random, continuous motion of tiny particles suspended in a fluid (liquid or gas) due to random collisions with surrounding fluid molecules; that is, the random thermal motion between fluid molecules. The layered structure with micropores can suppress Brownian motion through the synergistic effect of multiple mechanisms, including physical constraints, changes in fluid dynamics, surface interactions, and entropy effects. A first exhaust port is provided radially proximal to the first end 101 of the retention chamber 1. This first exhaust port is located on the side of the Brownian motion suppressor 3 closer to the primary separation device 2, and is used to discharge the lighter component gas that has been separated again. A second exhaust port is provided radially distal to the second end 102 of the retention chamber 1. This second exhaust port is located on the side of the Brownian motion suppressor 3 furthest from the primary separation device 2, and is used to discharge the heavier component gas that has been separated again.

[0049] To facilitate the fixation of the Brownian motion suppressor 3, a partition assembly 4 extending circumferentially is provided inside the indwelling cavity 1. The partition assembly 4 is arranged parallel to the inner wall of the radially distal end of the indwelling cavity 1. Specifically, the partition assembly 4 includes a fixed base plate 41 and a movable base plate 42 arranged in parallel. Both of them are plate-shaped structural components that are capable of ventilation. Preferably, circular holes can be provided on the fixed base plate 41 and the movable base plate 42 for ventilation. The fixed substrate 41 is fixedly connected to the inner wall of the distal radial end of the indwelling cavity 1 via a fixing part located at its radially distal end. A channel for gas flow is provided between the fixed substrate 41 and the inner wall of the indwelling cavity 1. In this embodiment, a fixing rib 413 extending axially is provided on the outer wall of the distal radial end of the fixed substrate 41. The outer edge of the fixing rib 413 is concave-convex, with the protruding part constituting the fixing part of the fixed substrate 41. At the same time, several connection openings are laser-cut at corresponding positions on the indwelling cavity 1, and the fixing part is inserted into these connection openings. The fixed substrate 41 and the indwelling cavity 1 are fixed by welding at the connection openings. The channel for gas flow between the fixed substrate 41 and the inner wall of the indwelling cavity 1 is the concave part of the fixing rib 413. To ensure the firmness of the connection between the fixed substrate 41 and the indwelling cavity 1, multiple sets of fixing ribs 413 can be evenly arranged axially.

[0050] A mounting frame is formed at the radial proximal end of the fixed substrate 41, and the movable substrate 42 is detachably fixed to the mounting frame. This forms a mounting space 43 between the fixed substrate 41 and the movable substrate 42. The Brownian motion suppressor 3 is disposed within this mounting space 43 and is fixed by compression from the fixed substrate 41 and the movable substrate 42 above and below the mounting space 43. Preferably, the radial distance of the mounting space 43 is between 5mm and 25mm, and the Brownian motion suppressor 3 is composed of 5-20 stacked layers of asbestos cloth with micropore sizes between 1μm and 10μm. The distance of the mounting space 43, the number of layers of the Brownian motion suppressor 3, and the pore size can all be adjusted according to actual conditions. Experiments have shown that suitable parameters such as the number of layers and pore size are appropriate for separating different mixed gases, which will not be elaborated further here. The material for the Brownian motion suppressor 3 is not limited to asbestos cloth. Any microporous medium with a certain degree of air permeability is acceptable. Furthermore, depending on the specific application scenario, materials that are resistant to high temperatures or corrosion can be selected, such as zeolite molecular sieves, porous ceramics, foamed metals, and mesoporous silica.

[0051] It is important to note that when determining the size of the vent holes on the fixed substrate 41 and the movable substrate 42, it is necessary to ensure that sufficient gas flow is provided, as well as that sufficient support and constraint force are provided for the Brownian motion suppressor 3.

[0052] Furthermore, to facilitate the disassembly and maintenance of the movable substrate 42 and the Brownian motion suppressor 3, in this embodiment, the Brownian motion suppressor 3 and the partition assembly 4 are simultaneously divided into several identical partition units 6 along the circumferential direction by several partition plates 5. The movable substrate 42 in each partition unit 6 is detachably fixed to the fixed substrate 41 in the partition unit 6 through an independent mounting frame, and the Brownian motion suppressor 3 in each partition unit 6 is independently pressed into the mounting space 43 in the partition unit 6, so that the movable substrate 42 and the Brownian motion suppressor 3 in each partition unit 6 can be disassembled individually. The radially distal ends of the partition plates 5 are all fixedly connected to the inner wall of the retention cavity 1, and a gas channel connecting two adjacent partition units 6 is left between the partition plates 5 and the inner wall of the retention cavity 1. Preferably, convex plates 7 are provided at radially distal ends of the partition plate 5, spaced axially. Simultaneously, several connecting openings are laser-cut at corresponding positions on the retention cavity 1, and the protrusions of the convex plates 7 extend into these connecting openings. The partition plate 5 and the retention cavity 1 are then fixed by welding at the connecting openings. The gas flow channel between the partition plate 5 and the inner wall of the retention cavity 1 is the gap between adjacent convex plates 7. The radially proximal ends of several partition plates 5 are fixedly connected to the outer wall of the primary separation device 2, and a gas flow channel is provided between them. Connecting plates can extend from the outer wall of the primary separation device 2 to fix the partition plates 5, thereby ensuring gas flow through the gaps between the connecting plates. Alternatively, the partition plates 5 can be directly connected to connecting plates extending from the primary separation device 2 for connecting the upper cover plate 11. The specific connection structure can be adjusted by those skilled in the art according to actual conditions.

[0053] In each partition unit 6, an n-shaped frame 411 is formed on the radially proximal end of the fixed base plate 41, facing the movable base plate 42. The two vertical sides of the n-shaped frame 411 are welded and fixed to the partition plates 5 on both sides. At the same time, a sliding groove 412 is provided on the opposite side of the two vertical sides of the n-shaped frame 411. The movable base plate 42 is slidably disposed in the sliding groove 412 and can be installed or removed by pulling. When maintenance of the indwelling cavity 1 is required, the bolts installed on the upper cover plate 11 and the end plate 12 can be removed, and the indwelling cavity 1 can be removed from the primary separation device 2 by horizontal pulling. Then, the movable base plate 42 can be disassembled separately to facilitate the replacement of the Brownian motion suppressor 3 on it. Installation and maintenance are very convenient.

[0054] Since the indwelling cavity 1 is located at the radially distal end of the primary separation device 2, it experiences a relatively large centrifugal force. Therefore, to ensure the overall strength of the indwelling cavity 1, a reinforcing rib 8 penetrating the movable base plate 42 is provided within each partition unit 6 at a midpoint from the two side partition plates 5. The radially distal end of the reinforcing rib 8 is connected to the fixed base plate 41, and the radially proximal end is connected to the outer wall of the primary separation device 2. The reinforcing rib 8 and the movable base plate 42 are fixedly connected as an integral structure by welding, and the reinforcing rib 8 can be disassembled together with the movable base plate 42. At the same time, several first through holes 81 of the same size are provided on the side of the reinforcing rib 8 near the fixed base plate 41, and several second through holes 82 that gradually increase in size from the first end 101 to the second end 102 are provided on the side of the reinforcing rib 8 near the primary separation device 2. The first through holes 81 and second through holes 82 are provided to ensure that gas can flow on both sides of the reinforcing rib 8.

[0055] The indwelling chamber 1 shown in this embodiment has a very simple overall structure. Without increasing costs or energy consumption, it can greatly improve the separation efficiency and purity of the original primary separation device 2. It also has a wide range of applications and can be used to improve various traditional centrifuge devices on the market.

[0056] Example 2:

[0057] Reference Figure 5 This embodiment provides a retention chamber for separating mixed gases. The only difference between the retention chamber 1 provided in Embodiment 1 and the one provided in Embodiment 1 is the addition of a first exhaust pipe 9 and a second exhaust pipe 10 to guide the separated gas to the vicinity of the rotation center 201. The rest are the same as in Embodiment 1 and will not be described again here.

[0058] Since the indwelling chamber 1 is located at the far end of the radial direction of the rotation center 201, it is subjected to a relatively large centrifugal force and its vibration is also relatively large. If the gas is directly discharged and collected from the first exhaust port and the second exhaust port on the indwelling chamber 1 (the external collection device is stationary), firstly, it is difficult to seal, and leakage is likely to occur due to excessive vibration. Secondly, during the transition between dynamic and static states, the gas flow rate will undergo a large sudden change, which is very easy to generate turbulence near the gas outlet and cause secondary mixing of the gas, which is not conducive to the separation of the mixed gas.

[0059] Therefore, this embodiment includes a first exhaust pipe 9 connected to the first exhaust port and a second exhaust pipe 10 connected to the second exhaust port. Inside the retention chamber 1, the separated gas is guided along the wall to a position near the rotation center 201 for further discharge and collection. This ensures that both the first exhaust pipe 9 and the second exhaust pipe 10 are relatively stationary relative to the rotating parts of the equipment, meaning the gas flow velocity within them is the same as the gas flow velocity at the inlet of the primary separation device 2. This helps maintain laminar flow of the large volume of gas and avoids secondary mixing caused by turbulence. Furthermore, vibration is relatively smaller near the rotation center 201, making it easier to ensure a tight seal when connected to the stationary collection device, and reducing costs. Alternatively, the gas in either the first exhaust pipe 9 or the second exhaust pipe 10 can be directed to the exhaust port area of ​​the primary separation device for unified discharge of the separated gas. The specific extension positions of the first exhaust pipe 9 and the second exhaust pipe 10 can be determined based on actual conditions. In addition, since the second exhaust port is located on the side of the Brownian motion suppressor 3 away from the primary separation device 2, and the second exhaust pipe 10 connected to it needs to be led out from the inside of the retention chamber 1, the second exhaust pipe 10 will interfere with the partition assembly 4. This can be avoided by setting U-shaped clearance grooves 44 on the fixed base plate 41 and the movable base plate 42. At the same time, corresponding fixed mounting points are set on the paths of the first exhaust pipe 9 and the second exhaust pipe 10 to ensure that the first exhaust pipe 9 and the second exhaust pipe 10 will not become loose during the process of rotating together with the rotation center 201.

[0060] In this embodiment, by adding a first exhaust pipe 9 and a second exhaust pipe 10, it is possible to better ensure that the separated gas can be discharged smoothly, avoid the possibility of secondary mixing of gas due to turbulence, and make it easier to seal the gas outlet. While ensuring the performance of the equipment itself, it also reduces the manufacturing cost.

[0061] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0062] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0063] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "beneath" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0064] In the description of this specification, the terms "one embodiment," "some embodiments," "embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0065] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make modifications, alterations, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A retention chamber for separating mixed gases, characterized in that: The indwelling cavity (1) is a hollow structure that can be set at the radially distal position of the primary separation device (2) relative to its rotation center (201) and rotate coaxially and synchronously with the primary separation device (2), and the indwelling cavity (1) is connected to the primary separation device (2). The indwelling cavity (1) is provided with a Brownian motion suppressor (3) along the circumferential direction. The Brownian motion suppressor (3) is a layered structure with several micropores. The indwelling cavity (1) has a first end (101) and a second end (102) that are inclined along the axial direction, and the internal space of the indwelling cavity (1) gradually increases from the first end (101) to the second end (102); The first end (101) has a first exhaust port at its radial proximal end and the second end (102) has a second exhaust port at its radial distal end.

2. The indwelling chamber for separating mixed gases as described in claim 1, characterized in that: The first exhaust port is located on the side of the Brownian motion suppressor (3) close to the primary separation device (2), and the second exhaust port is located on the side of the Brownian motion suppressor (3) away from the primary separation device (2).

3. The indwelling chamber for separating mixed gases as described in claim 1, characterized in that: The indwelling cavity (1) is provided with a partition assembly (4) extending circumferentially inside, and the partition assembly (4) is arranged parallel to the inner wall of the radially distal end of the indwelling cavity (1). The partition assembly (4) includes a fixed substrate (41) and a movable substrate (42) arranged in parallel and allowing gas to pass through; The fixed substrate (41) is fixedly connected to the inner wall of the radially distal end of the indwelling cavity (1) through a fixing part provided at its radially distal end, and a channel for gas circulation is provided between the substrate (41) and the inner wall of the indwelling cavity (1). A mounting frame is formed at the radial proximal end of the fixed substrate (41), and the movable substrate (42) is detachably fixed to the mounting frame. An installation space (43) is formed between the fixed substrate (41) and the movable substrate (42), and the Brownian motion suppressor (3) is disposed in the installation space (43).

4. The indwelling chamber for separating mixed gases as described in claim 3, characterized in that: The radial distance of the installation space (43) is between 5mm and 25mm, and the Brownian motion suppressor (3) is composed of 5-20 stacked layers of asbestos cloth with micropore size between 1μm and 10μm. The Brownian motion suppressor (3) is pressed and fixed by the fixed base plate (41) and the movable base plate (42).

5. The indwelling chamber for separating mixed gases as described in claim 3, characterized in that: Brownian motion suppressor (3) and the partition assembly (4) are simultaneously divided into several identical partition units (6) by several partition plates (5) in the circumferential direction; The radial distal ends of several of the partition plates (5) are fixedly connected to the inner wall of the indwelling cavity (1), and the radial proximal ends are fixedly connected to the primary separation device (2). Furthermore, the positions where the partition plates (5) are connected to the indwelling cavity (1) and the primary separation device (2) are all provided with gas channels connecting two adjacent partition plate units (6). The movable substrate (42) in each of the partition units (6) is detachably fixed to the fixed substrate (41) in the partition unit (6) by an independent mounting frame, and the Brownian motion suppressor (3) in each of the partition units (6) is independently pressed into the mounting space (43) in the partition unit (6).

6. The indwelling chamber for separating mixed gases as described in claim 5, characterized in that: Each partition unit (6) has an n-shaped frame (411) formed on the radial proximal end of the fixed base plate (41), and the two vertical sides of the n-shaped frame (411) are fixedly connected to the partition plate (5). The n-shaped frame (411) has grooves (412) on opposite sides of its two vertical sides, and the movable base plate (42) is slidably disposed in the grooves (412).

7. The indwelling chamber for separating mixed gases as described in claim 5, characterized in that: The outer wall of the fixed base plate (41) is provided with a fixed rib (413) extending along the axial direction. The outer edge of the fixed rib (413) is concave and convex, and the protruding part constitutes the fixed part. The partition plate (5) has a convex plate (7) arranged at axial intervals at its radial distal end. The partition plate (5) is fixedly connected to the inner wall of the distal radial end of the retention cavity (1) through the convex plate (7). The radially distal ends of the fixing part and the protruding plate (7) are both inserted into the inner wall of the retention cavity (1) for welding and fixing.

8. The indwelling chamber for separating mixed gases as described in claim 5, characterized in that: Each partition unit (6) has a reinforcing rib (8) that penetrates the movable base plate (42) at the middle position of the partition plates (5) on both sides. The radially distal end of the reinforcing rib (8) is connected to the fixed base plate (41), and the radially proximal end is connected to the outer wall of the primary separation device (2). The reinforcing rib (8) is fixedly connected to the movable base plate (42). The reinforcing rib (8) has several first through holes (81) of the same size on the side near the fixed base plate (41), and the reinforcing rib (8) has several second through holes (82) that gradually increase in size from the first end (101) to the second end (102) on the side near the primary separation device (2).

9. A retention chamber for separating mixed gases as described in claim 5, characterized in that: Each partition unit (6) is provided with a first exhaust pipe (9) connected to the first exhaust port and a second exhaust pipe (10) connected to the second exhaust port at the middle position of the partition plates (5) on both sides; Both the first exhaust pipe (9) and the second exhaust pipe (10) extend to a position close to the rotation center (201); The partition assembly (4) is provided with a U-shaped clearance groove (44) corresponding to the position of the second exhaust pipe (10).

10. A retention chamber for separating mixed gases as described in claim 1, characterized in that: The retention chamber (1) is an annular structure that can be fitted onto the outside of the primary separation device (2), and the inner side of the retention chamber (1) is the air inlet. The indwelling cavity (1) includes an upper cover plate (11) and an end plate (12) that are inclined from the first end (101) to the second end (102); The upper cover plate (11) has a first flange (111) and a second flange (112) facing the primary separation device (2) at its left and right ends along its inclined direction, respectively. The length of the first flange (111) is greater than the length of the second flange (112). The free end of the first flange (111) is detachably connected to the primary separation device (2), and the free end of the second flange (112) is detachably connected to the primary separation device (2) through the end plate (12); The upper cover plate (11), the end plate (12), and the outer wall of the primary separation device (2) together form the cavity of the indwelling cavity (1).

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