Full-metal sealed adsorption tower guide flow support device with heat compensation structure

Abstract

The present application relates to a kind of full metal sealed adsorption tower flow guide support device with heat compensation structure, belong to adsorption tower technical field.The full metal sealed adsorption tower flow guide support device includes the support device fixed ring welded to adsorption tower head, the flexible support leg of elastic airflow distribution plate and bottom being provided with the flexible support leg being deformed along axial / radial by metal bellows seal ring and support device fixed ring flexible connection.Elastic airflow distribution plate adopts double-layer corrugated metal plate structure, and flexible support leg is Ω-shaped metal elastic structure and is connected with the inner wall of head by sliding guide rail.Full metal sealing system includes metal bellows seal ring and wedge-shaped metal gasket.Strengthened flow guide structure includes cyclone suppression rib and variable-diameter flow guide hole.The present application can solve the problem of adsorption tower sealing reliability under high temperature and high pressure working condition.

Description

Technical Field

[0001] This invention belongs to the field of adsorption tower technology, specifically a flow guide support device for an all-metal sealed adsorption tower with a thermal compensation structure. Background Technology

[0002] Adsorption towers are key equipment in industrial gas separation and purification processes, and their internal flow-guiding support devices significantly impact the uniformity of gas flow distribution and the sealing performance of the adsorbent. Existing technologies typically employ a hemispherical airflow distribution plate combined with a multi-layered wire mesh structure, using silicone rubber adhesive to seal the gap between the wire mesh and the end caps. While this approach mitigates some of the problems of excessive dead space and welding cracks inherent in traditional devices, significant drawbacks remain under long-term high-temperature and alternating pressure conditions. Specifically, the silicone rubber adhesive sealing method is prone to aging and failure under high-temperature conditions, leading to adsorbent leakage, which in turn affects gas separation efficiency and threatens the safe operation of downstream equipment. Furthermore, the rigid welding or bolted connections between the airflow distribution plate, support ring, and end caps cause significant thermal stress concentration due to differences in thermal expansion coefficients among different metal components during cyclical temperature changes, potentially leading to weld cracking or structural deformation over long-term operation. Additionally, the aging of non-metallic seals necessitates shutdown and replacement, significantly increasing maintenance cycles and operating costs. Therefore, providing a flow-guiding support device capable of maintaining long-term stable operation under high-temperature and high-pressure conditions is a pressing technical problem that needs to be solved in this field. Summary of the Invention

[0003] This invention provides a fully metal sealed adsorption tower flow guide support device with a thermal compensation structure to solve the technical problems of existing adsorption tower flow guide support devices under long-term high temperature and alternating pressure conditions, such as insufficient structural sealing reliability due to aging and failure of seals, thermal stress concentration between metal components, easy weld cracking or support structure deformation, and high maintenance costs.

[0004] To solve the above problems, the present invention adopts the following technical solution:

[0005] A flow guide support device for an all-metal sealed adsorption tower with a thermal compensation structure includes a support device fixing ring welded to the adsorption tower head, and an elastic airflow distribution plate flexibly connected to the support device fixing ring via a metal bellows sealing ring. The bottom of the elastic airflow distribution plate is provided with a flexible support leg that can deform along the axial / radial direction, forming a composite support system that combines rigid fixing with flexible compensation.

[0006] The supporting device fixing ring is welded to the inner wall of the straight edge section of the convex head of the adsorption tower, and its cross-section has an L-shaped annular structure. The elastic airflow distribution plate adopts a double-layer corrugated metal plate structure, which is formed into a composite curved surface combining wave shape and hemispherical shape through stamping process. The edge of the elastic airflow distribution plate is provided with a connecting ring.

[0007] The flexible support legs are provided in at least three sets, which are evenly distributed around the bottom of the elastic airflow distribution plate. Each set of flexible support legs has an Ω-shaped metal elastic structure.

[0008] The lower end of the flexible support leg is connected to the inner wall of the adsorption tower head via a sliding guide rail; the sliding guide rail includes a guide rail seat and a slider, the guide rail seat is welded to the inner wall of the head, and the slider is connected to the lower end of the flexible support leg via a pin.

[0009] The all-metal sealing system includes a metal bellows sealing ring and a wedge-shaped metal gasket; the metal bellows sealing ring is arranged in a ring between the edge of the elastic airflow distribution plate and the fixing ring of the support device, and the two ends of the metal bellows sealing ring are respectively sealed to the connecting ring of the elastic airflow distribution plate and the fixing ring of the support device by vacuum electron beam welding.

[0010] Furthermore, it also includes a multi-layer wire mesh and a wedge-shaped metal gasket; the multi-layer wire mesh is disposed on the concave surface of the elastic airflow distribution plate; the wedge-shaped metal gasket is disposed between the multi-layer wire mesh and the concave surface of the elastic airflow distribution plate, and the wedge-shaped metal gasket is plastically deformed by the bolt preload and fills the gap between the wire mesh and the plate.

[0011] Furthermore, it also includes a reinforced flow guiding structure; the reinforced flow guiding structure includes swirling suppression ribs and variable diameter flow guiding holes; the swirling suppression ribs are multiple radially arranged spiral ribs that extend radially from the center to the edge in a spiral pattern and are fixedly installed on the convex surface of the elastic airflow distribution plate.

[0012] Furthermore, the variable-diameter guide holes are designed with gradient apertures based on their distance from the air inlet, with apertures ranging from 3-8 mm and aperture spacing of 15-25 mm. The air inlet is the gas inlet of the convex head of the adsorption tower.

[0013] Furthermore, the corrugated structure of the elastic airflow distribution plate can absorb radial thermal expansion with a compensation of ±5mm; the Ω-shaped structure of the flexible support leg can be compressed or stretched axially with a compensation of ±3mm; and the annular corrugated structure of the metal bellows sealing ring can adapt to radial thermal displacement.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. This invention effectively absorbs the axial and radial thermal displacement caused by temperature changes in the equipment through the multi-dimensional thermal compensation synergy of the corrugated plate structure, Ω-shaped support legs and metal bellows, and significantly reduces the thermal stress between metal components.

[0016] 2. This invention uses an all-metal sealing system to completely replace traditional non-metallic sealing materials, avoiding sealing failure caused by high-temperature aging and improving sealing reliability and service life.

[0017] 3. This invention improves the uniformity of airflow distribution and reduces the intensity of airflow vortex by optimizing the design of swirling suppression ribs and gradient variable diameter guide holes.

[0018] 4. The device of the present invention has a clear structural relationship, reliable connection, outstanding thermal compensation capability, and durable sealing performance, which significantly improves the operational reliability of the adsorption tower.

[0019] 5. This invention significantly reduces equipment maintenance needs and costs, and is suitable for stable operation under long-term high temperature and high pressure conditions. Attached Figure Description

[0020] Figure 1 This is a cross-sectional view of the overall structure of the present invention.

[0021] Figure 2 This is a three-dimensional structural diagram of the convex head of the adsorption tower according to this application.

[0022] Figure 3 For the present invention Figure 1 A magnified view of a portion of point A in the middle.

[0023] Figure 4 This is a schematic diagram of the swirl suppression rib of the present invention.

[0024] Figure 5 This is a schematic diagram of the variable diameter guide hole of the present invention.

[0025] Figure 6 This is a schematic diagram of the connecting ring of the present invention.

[0026] In the above figures, the component names corresponding to the reference numerals are as follows:

[0027] 1. Support device fixing ring; 2. Elastic airflow distribution plate; 3. Flexible support leg; 4. Metal bellows sealing ring; 5. Wedge-shaped metal gasket; 6. Sliding guide rail; 7. Swirl suppression rib; 8. Variable diameter guide hole; 9. Connecting ring; 10. Adsorption tower convex head; 11. Multi-layer wire mesh; 12. Bolt. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings.

[0029] In the description of this application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0030] Please see Figures 1 to 6 This invention provides an all-metal sealed adsorption tower flow guide support device with a thermal compensation structure. This device is mainly installed inside the convex head 10 of the adsorption tower, aiming to provide uniform distribution support for the airflow within the adsorption tower, while simultaneously possessing excellent thermal compensation capabilities and all-metal sealing performance to adapt to long-term high-temperature and alternating pressure conditions.

[0031] The all-metal sealed adsorption tower flow guide support device with thermal compensation structure of the present invention comprises a core component including a support device fixing ring 1 welded to the inner wall of the convex head 10 of the adsorption tower, and an elastic airflow distribution plate 2 flexibly connected to the support device fixing ring 1 via a metal bellows sealing ring 4. The bottom of the elastic airflow distribution plate 2 is provided with multiple flexible support legs 3, which have the ability to deform axially and / or radially. The lower ends of the flexible support legs 3 are connected to the inner wall of the convex head 10 of the adsorption tower via sliding guide rails 6. This structure forms a composite support system combining rigid fixation and flexible compensation, effectively coping with structural stress caused by high-temperature thermal expansion.

[0032] Specifically, the support device fixing ring 1 is an L-shaped annular component. The L-shaped cross-section includes an annular plate portion perpendicular to the adsorption tower axis and an annular cylindrical portion parallel to the adsorption tower axis. The support device fixing ring 1 is welded to the inner wall of the straight edge section of the adsorption tower convex head 10. This welded connection ensures a strong and sealed rigid connection interface between the support device fixing ring 1 and the adsorption tower convex head 10. The L-shaped structure of the support device fixing ring 1, with its vertical plate portion extending towards the center of the adsorption tower, forms a support surface for structural connection with the outer edge of the metal bellows sealing ring 4. The support device fixing ring 1 is made of high-strength, corrosion-resistant stainless steel or nickel-based alloy material compatible with the main material of the adsorption tower convex head 10 to ensure excellent mechanical properties and chemical stability under high temperature and high pressure environments. Its thickness and specific dimensions of the L-shaped cross-section (e.g., the radial width of the vertical plate portion and the axial height of the cylindrical portion) are precisely calculated to withstand the load transmitted by the elastic airflow distribution plate 2 and provide a reliable sealing mating surface.

[0033] The elastic airflow distribution plate 2 features a double-layer corrugated metal plate design as its main structure. This double-layer corrugated metal plate is integrally formed through a precision stamping process, creating a unique composite curved surface structure. The composite curved surface comprises interlaced wave-shaped structural units and multiple uniformly distributed hemispherical structural units. The wave-shaped structural units extend along a specific radial or circumferential path, while the hemispherical structural units form protrusions between or above the wave-shaped structures, collectively constructing a plate with high strength and excellent elasticity. The elastic airflow distribution plate 2 is manufactured using high-temperature resistant and corrosion-resistant special stainless steel or nickel-based alloy materials to ensure structural stability and mechanical properties under the harsh conditions of high temperature and alternating pressure inside the adsorption tower. The plate thickness of the elastic airflow distribution plate 2 is designed within the range of 1.5-3mm to ensure its load-bearing capacity while providing good elastic deformation capability. The peak and valley heights, wavelengths, and diameters and depths of the hemispherical units of the corrugated structure are precisely designed, enabling the corrugated structure of the elastic airflow distribution plate 2 to absorb thermal expansion deformation in the radial direction. The deformation compensation amount of the structure is set within the range of ±5mm, which means that when the plate structure of the elastic airflow distribution plate 2 is subjected to radial thermal expansion or contraction, it can accommodate or release the displacement through the elastic deformation of its own corrugated structural unit, thereby avoiding excessive thermal stress concentration in the edge area of ​​the plate and improving the overall reliability and service life of the device.

[0034] The flexible support legs 3 are provided in at least three sets, and are evenly distributed around the bottom of the elastic airflow distribution plate 2 along its circumference. Each set of flexible support legs 3 is an Ω-shaped metal elastic structure. This Ω-shaped structure is integrally bent from a high-temperature resistant, high-elasticity metal material (such as nickel-based alloy or high-elasticity stainless steel) to form a component with two fixed ends and a middle arc-shaped elastic part. The Ω-shaped structure has the ability to undergo axial compression or tensile deformation, and its structural compensation range is set within ±3mm. Specifically, when the internal temperature of the adsorption tower rises, causing the elastic airflow distribution plate 2 to expand axially, the middle arc-shaped part of the Ω-shaped flexible support leg 3 can absorb the axial displacement through elastic compression; conversely, when the temperature decreases, causing the plate to shrink, the Ω-shaped structure compensates for the axial displacement through elastic stretching. The upper end of the flexible support leg 3 is firmly fixed to the bottom surface of the elastic airflow distribution plate 2 by welding or bolting. The lower end of the flexible support leg 3 is movably connected to the slider part of the sliding guide rail 6. The uniformity of the number and circumferential distribution of the flexible support legs 3 ensures stable support for the elastic airflow distribution plate 2 and uniformly distributes its axial thermal compensation capability.

[0035] The sliding guide rail 6 comprises two main structural components: a guide rail seat and a slider. The guide rail seat is fixed to the inner wall surface of the convex head 10 of the adsorption tower by welding, located in the conical or arc-shaped region of the head. The surface of the guide rail seat is machined with a sliding groove or track structure, and the slider slides into this groove or track structure. The slider is connected to the lower end of the flexible support leg 3 via a pin. The pin passes through a pin hole at the lower end of the flexible support leg 3 and a corresponding pin hole on the slider, forming a rotational and / or sliding connection. Both the guide rail seat and the slider of the sliding guide rail 6 are made of wear-resistant and corrosion-resistant metal materials, such as wear-resistant alloy steel or surface-hardened stainless steel. The structural design of the sliding guide rail 6 allows the lower end of the flexible support leg 3 to slide freely radially on the sliding guide rail 6 on the inner wall of the convex head 10 of the adsorption tower, thereby further absorbing the radial thermal expansion or contraction of the elastic airflow distribution plate 2. The clearance between the pin and the hole is reasonably designed, allowing necessary sliding and rotation while ensuring the stability of the connection. The length and width of the sliding guide rail 6, as well as the clearance between the slider and the guide rail seat, have been optimized to ensure smooth sliding while preventing detachment under severe vibration or impact conditions.

[0036] The all-metal sealing system comprises a metal bellows sealing ring 4 and a wedge-shaped metal gasket 5. The metal bellows sealing ring 4 is arranged in a ring structure between the outer edge of the elastic airflow distribution plate 2 and the supporting device fixing ring 1. Both ends of the metal bellows sealing ring 4 are sealed to the connecting ring 9 of the elastic airflow distribution plate 2 and the supporting device fixing ring 1 respectively via vacuum electron beam welding. The connecting ring 9 is a ring-shaped metal component, firmly welded to the edge of the elastic airflow distribution plate 2, providing a smooth welding interface. Vacuum electron beam welding technology ensures the tightness and reliability of the welding quality, forming a leak-free all-metal sealing interface. The metal bellows sealing ring 4 is made of a highly flexible, high-temperature resistant, and corrosion-resistant metal material (such as Hastelloy, Inconel, or special stainless steel). Its ring-shaped bellows structure gives it the ability to adapt to thermal displacement in the radial direction, effectively compensating for the relative radial expansion or contraction between the elastic airflow distribution plate 2 and the supporting device fixing ring 1 caused by temperature changes, without transmitting excessive thermal stress. The corrugated depth, pitch, and wall thickness of the bellows are precisely designed to provide the required radial compensation and sufficient pressure resistance.

[0037] The wedge-shaped metal gasket 5 is disposed between the multilayer wire mesh 11 and the concave surface of the elastic airflow distribution plate 2. The wedge-shaped metal gasket 5 has a wedge-shaped cross-section and is made of a metal material with a certain plastic deformation capacity (such as soft stainless steel, copper, or nickel alloy). By applying a preload through the bolt 12, the wedge-shaped metal gasket 5 undergoes plastic deformation and fills the irregular gap between the multilayer wire mesh 11 and the concave surface of the elastic airflow distribution plate 2. This plastic deformation sealing mechanism provides a reliable static seal, preventing adsorbent or catalyst particles from leaking through the gaps, while ensuring close contact between the multilayer wire mesh 11 and the elastic airflow distribution plate 2, thus improving the sealing performance and stability of the entire flow guide support device. The bolt 12 passes through the multilayer wire mesh 11 and the wedge-shaped metal gasket 5 and is screwed into the threaded hole of the elastic airflow distribution plate 2. Uniform preload is applied to the wedge-shaped metal gasket 5 by evenly tightening the bolt 12.

[0038] The present invention also includes a reinforced flow guiding structure, which consists of swirl suppression ribs 7 and variable diameter flow guiding holes 8. The swirl suppression ribs 7 are multiple radially arranged spiral ribs extending radially from the center to the edge, and are fixed to the convex surface of the elastic airflow distribution plate 2 by welding. These spiral ribs have a certain spiral angle and are made of the same high-temperature resistant metal material as the elastic airflow distribution plate 2. Their height, width, and spiral angle are precisely designed to pre-swirl or guide the incoming airflow before it passes through the elastic airflow distribution plate 2, thereby suppressing large-scale vortices in the airflow, improving the uniformity of airflow distribution within the adsorption tower, reducing the intensity of airflow vortices, and avoiding adsorbent wear caused by localized airflow scouring. The uniform arrangement of the number and spacing of the swirl suppression ribs 7 ensures effective regulation of the airflow across the entire plate surface.

[0039] The variable-diameter guide holes 8 are directly opened onto the body of the elastic airflow distribution plate 2. The diameter of these holes is designed as a gradient aperture based on their distance from the air inlet. The aperture ranges from 3-8 mm, and the spacing between holes is 15-25 mm. Specifically, the diameter of the guide holes near the air inlet is smaller, while the diameter gradually increases further away from the inlet. This gradient aperture design adjusts the airflow resistance in different areas, allowing for a more uniform distribution of the overall airflow after passing through the elastic airflow distribution plate 2. The holes are arranged in a regular polygonal pattern, ensuring the uniformity of the plate's opening ratio and structural strength. The edges of the holes are chamfered or rounded to reduce resistance loss and disturbance to the airflow. The number, distribution density, and specific gradient variation of the variable-diameter guide holes 8 are all designed based on the flow field simulation results of the adsorption tower, ensuring a high degree of consistency in airflow distribution across the entire cross-section of the adsorption tower.

[0040] The connecting ring 9, as a component of the elastic airflow distribution plate 2, is a ring-shaped metal structure welded to the outer periphery of the elastic airflow distribution plate 2. The connecting ring 9 has a smooth surface and uniform thickness, providing a stable and reliable vacuum electron beam welding interface for the inner end of the metal bellows sealing ring 4. The material of the connecting ring 9 matches the material of the elastic airflow distribution plate 2, ensuring the strength and corrosion resistance of the welded connection. Its radial width and axial height are rationally designed to withstand the thermal stress during the welding process and provide the necessary structural support for the metal bellows sealing ring 4 during the entire operation of the device.

[0041] The convex end cap 10 of the adsorption tower constitutes the external container structure of the present invention and is a typical end cap component of an adsorption tower, usually elliptical, dish-shaped, or other convex structures. Its straight-edge inner wall provides a rigid welding mounting position for the support device fixing ring 1, while its internal curved surface provides a sliding support surface for the flexible support leg 3 via the sliding guide rail 6. The convex end cap 10 of the adsorption tower is typically made of high-strength carbon steel or alloy steel, possessing sufficient thickness and rigidity to withstand the high-pressure conditions inside the adsorption tower.

[0042] The multi-layer wire mesh 11 is arranged on the concave surface of the elastic airflow distribution plate 2 and is in direct contact with the concave surface of the elastic airflow distribution plate 2. The multi-layer wire mesh 11 is typically composed of multiple layers of metal wire mesh with different mesh counts, and is made of high-temperature resistant and corrosion-resistant stainless steel. Its main structural function is to support the adsorbent or catalyst layer above and allow airflow to pass through, while preventing adsorbent or catalyst particles from falling off. The edges of the multi-layer wire mesh 11 are sealed with the elastic airflow distribution plate 2 by wedge-shaped metal gaskets 5, ensuring the particle retention effect.

[0043] The bolt 12 is used to apply preload to the wedge-shaped metal gasket 5. The bolt 12 passes through the multi-layer wire mesh 11 and the wedge-shaped metal gasket 5, and is screwed into a pre-drilled threaded hole in the elastic airflow distribution plate 2. The bolt 12 is typically made of high-strength, corrosion-resistant bolt steel, and its specifications (such as diameter, length, and thread type) match the threaded hole on the elastic airflow distribution plate 2 to ensure reliable fastening. Multiple bolts 12 are evenly distributed circumferentially. By gradually tightening these bolts 12, uniform preload can be achieved on the wedge-shaped metal gasket 5, causing it to undergo plastic deformation and fill the gap, forming a reliable seal.

[0044] The working principle of this invention is as follows: When the adsorption tower is put into operation, high-temperature process gas enters the interior of the convex head 10 of the adsorption tower through the inlet, and first impacts the convex surface of the elastic airflow distribution plate 2. Before passing through the elastic airflow distribution plate 2, the airflow first contacts the swirl suppression ribs 7. The spiral ribs generate a pre-swirl and guiding effect on the airflow, destroying the large-scale vortex structure and making the airflow tend to be uniformly distributed. Subsequently, the airflow passes through the variable diameter guide holes 8. Due to the gradient aperture design of the guide holes, the small aperture holes near the inlet area provide greater airflow resistance, while the large aperture holes far from the inlet area provide less airflow resistance. This resistance distribution compensates for the pressure gradient difference of the airflow on the cross-section of the adsorption tower, so that the airflow after passing through the guide holes reaches a uniform distribution state on the entire cross-section of the adsorption tower. The uniformly distributed airflow continues upward through the multi-layer wire mesh 11 and enters the adsorbent or catalyst bed to carry out the adsorption or catalytic reaction process.

[0045] Under high-temperature conditions, the internal components of the adsorption tower undergo thermal expansion due to temperature increases. The elastic airflow distribution plate 2, with its double-layer corrugated metal plate structure, absorbs thermal expansion displacement in the radial direction through the elastic deformation of the corrugated structural units, achieving a compensation of ±5mm. Simultaneously, the Ω-shaped structure of the flexible support leg 3 adapts to axial thermal expansion in the axial direction through the elastic compression of the arc-shaped portion, achieving a compensation of ±3mm. The sliding guide rail 6 allows the lower end of the flexible support leg 3 to slide radially along the inner wall of the convex head 10 of the adsorption tower, further absorbing radial thermal displacement. The metal bellows sealing ring 4, through its annular corrugated structure, adapts to the relative radial displacement between the elastic airflow distribution plate 2 and the fixed ring 1 of the support device, while maintaining the integrity of the all-metal seal. This multi-dimensional thermal compensation mechanism effectively avoids structural stress concentration caused by differences in thermal expansion, ensuring the structural stability and sealing reliability of the device under high-temperature conditions.

[0046] Under alternating pressure conditions, the internal pressure of the adsorption tower changes periodically. The corrugated structure of the elastic airflow distribution plate 2 and the Ω-shaped structure of the flexible support leg 3 have good elasticity and can adapt to structural deformation caused by pressure fluctuations. The flexible characteristics of the metal bellows sealing ring 4 enable it to withstand pressure fluctuations without affecting the sealing performance. The plastic deformation of the wedge-shaped metal gasket 5 under the preload of the bolt 12 can effectively fill the gap, maintaining the sealing contact between the multi-layer wire mesh 11 and the elastic airflow distribution plate 2 even under pressure fluctuation conditions. The entire device achieves reliable operation under long-term high temperature and alternating pressure conditions through the organic combination of rigid fixation and flexible compensation.

[0047] In summary, this invention rigidly welds the support device fixing ring 1 to the convex head 10 of the adsorption tower, and flexibly connects the elastic airflow distribution plate 2 to the support device fixing ring 1 via a metal bellows sealing ring 4. An Ω-shaped flexible support leg 3 is provided at the bottom of the elastic airflow distribution plate 2, and its lower end is slidably connected to the inner wall of the convex head 10 of the adsorption tower via a sliding guide rail 6. The corrugated structure of the elastic airflow distribution plate 2 itself can absorb radial thermal expansion deformation, with a compensation amount set at ±5mm. The Ω-shaped structure of the flexible support leg 3 can undergo axial compression or stretching deformation, with a compensation amount set at ±3mm. The annular corrugated structure of the metal bellows sealing ring 4 can adapt to radial thermal displacement, thus forming a multi-dimensional thermal compensation and all-metal sealing composite structural system. The swirl suppression rib 7 and the variable diameter guide hole 8 in this device work together, through precise geometric design, to effectively improve the uniformity of airflow distribution inside the adsorption tower and suppress the intensity of airflow vortices. The entire device is constructed from high-temperature and corrosion-resistant metal materials and assembled using reliable welding and mechanical connections, ensuring structural integrity and sealing reliability under long-term high-temperature, high-pressure, and alternating pressure conditions.

[0048] It should be noted that all standard parts used in this application can be purchased from the market, and can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery and equipment adopt conventional models in the prior art.

[0049] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A flow guide support device for an all-metal sealed adsorption tower with a thermal compensation structure, characterized in that, It includes a support device fixing ring (1), an elastic airflow distribution plate (2), a flexible support leg (3), a metal bellows sealing ring (4), and a sliding guide rail (6). The support device fixing ring (1) is welded to the inner wall of the straight edge section of the convex head (10) of the adsorption tower, and its cross-section is an L-shaped ring structure; the elastic airflow distribution plate (2) is flexibly connected to the support device fixing ring (1) through the metal bellows sealing ring (4), and the elastic airflow distribution plate (2) adopts a double-layer corrugated metal plate structure, which is formed by stamping process to form a composite curved surface combining wave shape and hemispherical shape; the edge of the elastic airflow distribution plate (2) is provided with a connecting ring (9). The flexible support legs (3) are provided in at least three sets and are evenly distributed around the bottom of the elastic airflow distribution plate (2). Each set of flexible support legs (3) has an Ω-shaped metal elastic structure. The lower end of the flexible support legs (3) is connected to the inner wall of the convex head (10) of the adsorption tower through a sliding guide rail (6). The sliding guide rail (6) includes a guide rail seat and a slider. The guide rail seat is welded to the inner wall of the convex head (10) of the adsorption tower. The slider is connected to the lower end of the flexible support leg (3) by a pin. The metal bellows sealing ring (4) is arranged in a ring between the edge of the elastic airflow distribution plate (2) and the support device fixing ring (1). The two ends of the metal bellows sealing ring (4) are respectively sealed to the connecting ring (9) of the elastic airflow distribution plate (2) and the support device fixing ring (1) by vacuum electron beam welding. It also includes a reinforced flow guiding structure; the reinforced flow guiding structure includes a swirl suppression rib (7) and a variable diameter flow guiding hole (8); the swirl suppression rib (7) is a plurality of radially arranged spiral ribs that extend radially from the center to the edge in a spiral pattern and are fixedly set on the convex surface of the elastic airflow distribution plate (2); the diameter of the variable diameter flow guiding hole (8) is distributed in a gradient according to the distance from the air inlet, and its diameter gradually increases from the area close to the air inlet to the area far away from the air inlet.

2. The all-metal sealed adsorption tower flow guide support device with thermal compensation structure according to claim 1, characterized in that, It also includes a multi-layer wire mesh (11) and a wedge-shaped metal gasket (5); the multi-layer wire mesh (11) is disposed on the concave surface of the elastic airflow distribution plate (2); the wedge-shaped metal gasket (5) is disposed between the multi-layer wire mesh (11) and the concave surface of the elastic airflow distribution plate (2), and the wedge-shaped metal gasket (5) is plastically deformed by the pre-tightening force of the bolt (12) and fills the gap between the wire mesh and the plate.

3. The all-metal sealed adsorption tower flow guide support device with thermal compensation structure according to claim 2, characterized in that, The geometry of the wedge-shaped metal gasket (5) is a ring structure with a wedge-shaped cross-section.

4. The all-metal sealed adsorption tower flow guide support device with thermal compensation structure according to claim 1, characterized in that, The diameter of the variable diameter guide hole (8) is 3-8 mm, and the hole spacing is 15-25 mm.

5. The all-metal sealed adsorption tower flow guide support device with thermal compensation structure according to claim 4, characterized in that, The swirling suppression rib (7) is fixed to the convex surface of the elastic airflow distribution plate (2) by welding.

6. The all-metal sealed adsorption tower flow guide support device with thermal compensation structure according to claim 4, characterized in that, The variable diameter guide holes (8) are arranged in a regular polygonal pattern.

7. The all-metal sealed adsorption tower flow guide support device with thermal compensation structure according to claim 1, characterized in that, The corrugated structure of the elastic airflow distribution plate (2) can absorb radial thermal expansion, with a compensation amount of ±5mm.

8. The all-metal sealed adsorption tower flow guide support device with thermal compensation structure according to claim 1, characterized in that, The Ω-shaped structure of the flexible support leg (3) can be compressed or stretched along the axial direction, with a compensation amount of ±3mm.

9. The all-metal sealed adsorption tower flow guide support device with thermal compensation structure according to claim 1, characterized in that, The annular corrugated structure of the metal bellows sealing ring (4) can adapt to radial thermal displacement.

10. The all-metal sealed adsorption tower flow guide support device with thermal compensation structure according to claim 1, characterized in that, The connecting ring (9) is an annular metal component, welded to the edge of the elastic airflow distribution plate (2).

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