All-metal sealing adsorption tower flow guide supporting device with thermal compensation structure

Abstract

The invention relates to an all-metal sealing adsorption tower flow guide supporting device with a thermal compensation structure, and belongs to the technical field of adsorption towers. The flow guide supporting device of the all-metal sealing adsorption tower comprises a supporting device fixing ring welded to an adsorption tower sealing head, an elastic airflow distribution plate flexibly connected with the supporting device fixing ring through a metal corrugated pipe sealing ring, and flexible supporting legs which are arranged at the bottom and can deform in the axial direction or the radial direction. The elastic airflow distribution plate is of a double-layer corrugated metal plate structure, and the flexible supporting leg is of an omega-shaped metal elastic structure and is connected with the inner wall of the end socket through a sliding guide rail. The all-metal sealing system comprises a metal corrugated pipe sealing ring and a wedge-shaped metal gasket. The reinforced flow guide structure comprises rotational flow restraining ribs and variable-diameter flow guide holes. The problem of sealing reliability of the adsorption tower under high-temperature and high-pressure working conditions can be solved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of adsorption towers, and particularly relates to a full-metal sealed adsorption tower flow guide support device with a heat compensation structure. BACKGROUND

[0002] An adsorption tower is a key equipment in the industrial gas separation and purification process, and the internal flow guide support device has an important influence on the uniformity of gas flow distribution and the sealing performance of adsorbents. The existing technology usually adopts a structure of a hemispherical gas flow distribution plate combined with multiple layers of wire meshes, and realizes the sealing of the gap between the wire meshes and the head by using a silicone rubber adhesive. This method improves the problems of excessive dead space and welding cracks existing in the traditional device to a certain extent. However, under the long-term high-temperature working condition and alternating pressure environment, the existing structure still has obvious defects. Specifically, the sealing method using the silicone rubber adhesive is prone to aging failure under high-temperature conditions, which leads to the leakage of adsorbents, and further affects the gas separation efficiency and threatens the safe operation of downstream equipment. At the same time, the rigid welding or bolt connection between the gas flow distribution plate, the support ring and the head will cause significant thermal stress concentration due to the difference in the thermal expansion coefficients of different metal components when the equipment experiences periodic temperature changes, and long-term operation is easy to cause welding crack or support structure deformation. In addition, the non-metallic sealing element needs to be replaced after aging, which significantly increases the equipment maintenance cycle and operating cost. Therefore, how to provide a flow guide support device capable of maintaining long-term stable operation under high-temperature and high-pressure working conditions has become a technical problem to be solved in the field. SUMMARY

[0003] The application provides a full-metal sealed adsorption tower flow guide support device with a heat compensation structure to solve the technical problems of insufficient structural sealing reliability, easy welding crack or support structure deformation and high maintenance cost caused by the aging failure of the sealing element and the thermal stress concentration between metal components of the existing adsorption tower flow guide support device under long-term high-temperature and alternating pressure working conditions.

[0004] To solve the above problems, the application adopts the following technical scheme:

[0005] A full-metal sealed adsorption tower flow guide support device with a heat compensation structure, comprising a support device fixing ring welded to the head of the adsorption tower, and an elastic gas flow distribution plate flexibly connected to the support device fixing ring through a metal bellows sealing ring, wherein the bottom of the elastic gas flow distribution plate is provided with flexible support legs capable of deforming in the axial direction / radial direction, forming a composite support system combining rigidity fixation and flexibility compensation.

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

[0007] The flexible support legs are arranged in at least three groups and are uniformly distributed on the bottom of the elastic airflow distribution plate in the circumferential direction, and each group of flexible support legs is in the form of an omega-shaped metal elastic structure.

[0008] The lower end of the flexible support leg is connected to the inner wall of the adsorption tower head through a sliding guide rail, and the sliding guide rail comprises a guide rail seat and a sliding block.

[0009] The all-metal sealing system comprises a metal bellows sealing ring and a wedge-shaped metal gasket, the metal bellows sealing ring is arranged in the form of 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 connected to the connecting ring of the elastic airflow distribution plate and the fixing ring of the support device through vacuum electron beam welding.

[0010] Further, a multi-layer wire mesh and a wedge-shaped metal gasket are further included, the multi-layer wire mesh is arranged on the concave surface of the elastic airflow distribution plate, and the wedge-shaped metal gasket is arranged between the multi-layer wire mesh and the concave surface of the elastic airflow distribution plate and is plastically deformed by the bolt pre-tightening force to fill the gap between the wire mesh and the plate body.

[0011] Further, a reinforced flow guide structure is further included, the reinforced flow guide structure comprises a rotational flow suppression rib and a variable-diameter flow guide hole, the rotational flow suppression rib is a plurality of spiral ribs arranged in the form of a spiral line and extending radially from the center to the edge and is fixedly arranged on the convex surface of the elastic airflow distribution plate.

[0012] Further, the variable-diameter flow guide hole is designed as a gradient hole diameter according to the distance from the air inlet, the hole diameter ranges from 3-8 mm, and the hole spacing is 15-25 mm.

[0013] Further, the corrugated structure of the elastic airflow distribution plate can absorb the radial thermal expansion, the compensation amount is ±5 mm, the omega-shaped structure of the flexible support leg can be compressed or stretched in the axial direction, the compensation amount is ±3 mm, and the annular corrugated structure of the metal bellows sealing ring can adapt to the radial thermal displacement.

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

[0015] 1. The present application effectively absorbs the axial and radial thermal displacement of the equipment caused by temperature change through the synergistic effect of the corrugated plate structure, the omega-shaped support leg and the multi-dimensional thermal compensation of the metal bellows, and significantly reduces the thermal stress between the metal parts.

[0016] 2. The application adopts a full metal sealing system to completely replace traditional non-metal sealing materials, avoids sealing failure caused by high temperature aging, and improves sealing reliability and service life.

[0017] 3. The application optimizes the design of the cyclone suppression rib and the gradient variable guide hole, improves the uniformity of airflow distribution, and reduces the intensity of airflow vortex.

[0018] 4. The device has clear structural relationship, reliable connection, outstanding thermal compensation ability, durable sealing performance, and significantly improves the operation reliability of the adsorption tower.

[0019] 5. The application greatly reduces equipment maintenance requirements and costs, and is suitable for stable operation under long-term high temperature and high pressure conditions. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a sectional view of the overall structure of the application.

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

[0022] Figure 3 is a sectional view of the overall structure of the application. Figure 1

[0023] Figure 4 is a structural schematic diagram of the cyclone suppression rib of the application.

[0024] Figure 5 is a structural schematic diagram of the variable guide hole of the application.

[0025] Figure 6 is a structural schematic diagram of the connecting ring of the application.

[0026] In the above drawings, the component names corresponding to the reference signs 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, cyclone suppression rib; 8, variable guide hole; 9, connecting ring; 10, adsorption tower convex head; 11, multi-layer wire mesh; 12, bolt. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical scheme and advantages of the application clearer, the technical scheme of the application will be described clearly and completely below in combination with specific embodiments of the application and corresponding drawings.

[0029] ​In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0030] Referring to Figures 1 to 6 The embodiment of the present application provides a full-metal sealed adsorption tower flow guide support device with a heat compensation structure. The device is mainly installed in the inside of the convex head 10 of the adsorption tower, aiming to provide uniform distribution support for the airflow in the adsorption tower, and at the same time has excellent heat compensation ability and full-metal sealing performance to adapt to long-term high-temperature and alternating pressure working conditions.

[0031] The full-metal sealed adsorption tower flow guide support device with a heat compensation structure of the present application, the core structure of which includes 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 with the support device fixing ring 1 through a metal bellows seal ring 4. The bottom of the elastic airflow distribution plate 2 is provided with a plurality of flexible support legs 3, which have the ability to deform in the axial and / or radial directions. The lower end of the flexible support leg 3 is connected with the inner wall of the convex head 10 of the adsorption tower through a sliding guide rail 6. This structure forms a composite support system combining rigid fixation and flexible compensation, effectively dealing with the structural stress caused by high-temperature thermal expansion.

[0032] Specifically, the support device fixing ring 1 is an L-shaped annular member, and the L-shaped cross section includes an annular plate part perpendicular to the axis of the adsorption tower and an annular cylinder part parallel to the axis of the adsorption tower. The annular cylinder part of the support device fixing ring 1 is fixedly connected to the inner wall of the straight edge segment of the convex head 10 of the adsorption tower by welding. The welding connection ensures that a firm and sealed rigid connection interface is formed between the support device fixing ring 1 and the convex head 10 of the adsorption tower. The L-shaped structure of the support device fixing ring 1 extends in the direction of the center of the adsorption tower with its vertical plate part, constituting a support surface for structural connection with the outer edge of the metal bellows seal 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 convex head 10 of the adsorption tower, to ensure excellent mechanical properties and chemical stability in high-temperature and high-pressure environments. The thickness and specific dimensions of the L-shaped cross section (such as the radial width of the vertical plate part and the axial height of the cylinder part) are precisely calculated to withstand the load transmitted by the elastic airflow distribution plate 2 and provide a reliable sealing fit surface.

[0033] The elastic airflow distribution plate 2 adopts a double-layer corrugated metal plate design. The double-layer corrugated metal plate is integrally formed through a precise stamping process to form a unique composite curved surface structure. The composite curved surface includes wave-shaped structure units arranged in a staggered manner and a plurality of uniformly distributed hemispherical structure units. The wave-shaped structure units extend along a specific radial or circumferential path, and the hemispherical structure units form protrusions between or on the wave-shaped structure units, together constituting a plate body with high strength and excellent elasticity. The elastic airflow distribution plate 2 is made of special stainless steel or nickel-based alloy material that is resistant to high temperature and corrosion, to ensure that the structure stability and mechanical properties are maintained under the harsh working conditions of high temperature and alternating pressure inside the adsorption tower. The thickness of the plate body of the elastic airflow distribution plate 2 is designed to be in the range of 1.5-3mm, to ensure its load-carrying capacity while giving it good elastic deformation capacity. The peak-to-valley height, wavelength of the corrugated structure, and the diameter and depth of the hemispherical units are precisely designed, so that the corrugated structure of the elastic airflow distribution plate 2 has the ability to absorb thermal expansion deformation in the radial direction. The structural deformation compensation amount is set within the range of ±5mm, which means that when the plate body 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 corrugated structure units, thereby avoiding excessive thermal stress concentration at the edge area of the plate body and improving the overall reliability and service life of the device.

[0034] The flexible support legs 3 are provided in at least three groups and are uniformly distributed on the bottom of the elastic airflow distribution plate 2 along the circumference. Each group of flexible support legs 3 is in the shape of an Ω-shaped metal elastic structure. The Ω-shaped structure is integrally bent and formed from a metal material that is resistant to high temperature and has high elasticity, such as nickel-based alloy or high-elasticity stainless steel, forming a component with upper and lower fixed ends and an intermediate arc-shaped elastic part. The Ω-shaped structure has the ability to compress or stretch in the axial direction, with a structural compensation amount range set at ±3mm. Specifically, when the temperature inside the adsorption tower rises, causing the elastic airflow distribution plate 2 to expand in the axial direction, the intermediate arc-shaped part of the Ω-shaped flexible support leg 3 can absorb the axial displacement by elastic compression; conversely, when the temperature decreases, causing the plate body to contract, the Ω-shaped structure compensates for the axial displacement by 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 bolt connection, etc. The lower end of the flexible support leg 3 is movably connected with the slider part of the sliding guide rail 6. The number and uniformity of the circumferential distribution of the flexible support legs 3 ensure stable support for the elastic airflow distribution plate 2 and evenly distribute its axial thermal compensation capacity.

[0035] The sliding guide rail 6 comprises two main structural components, a guide rail seat and a sliding block. The guide rail seat is fixed to the inner wall surface of the adsorption tower convex head 10 by welding, and is located in the conical or arc-shaped area of the head. The surface of the guide rail seat is processed with a sliding groove or track structure, and the sliding block is in sliding fit with the sliding groove or track structure. The lower end of the flexible support leg 3 is connected with the sliding block through a pin shaft. The pin shaft passes through the pin hole in the lower end of the flexible support leg 3 and the corresponding pin hole in the sliding block to form a rotating and / or sliding connection. The guide rail seat and the sliding block 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 enables the lower end of the flexible support leg 3 to freely slide in the radial direction on the sliding guide rail 6 of the inner wall of the adsorption tower convex head 10, thereby further absorbing the radial thermal expansion or contraction of the elastic airflow distribution plate 2. The gap between the pin shaft and the hole is reasonably designed to allow necessary sliding and rotation, and to ensure the stability of the connection. The length and width dimensions of the sliding guide rail 6, as well as the fit clearance between the sliding block and the guide rail seat, are optimally designed to ensure smooth sliding while avoiding disengagement 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 an annular structure between the outer 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 connected to the connecting ring 9 of the elastic airflow distribution plate 2 and the support device fixing ring 1 by vacuum electron beam welding. The connecting ring 9 is a ring-shaped metal member firmly welded to the edge of the elastic airflow distribution plate 2, providing a flat welding interface. The vacuum electron beam welding technology ensures the density and reliability of the welding quality, forming a leak-free all-metal sealing interface. The metal bellows sealing ring 4 is made of high-ductility, high-temperature-resistant and corrosion-resistant metal materials (such as Hastelloy, Inconel or special stainless steel), and its annular bellows structure endows it with 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 support device fixing ring 1 due to temperature changes without transmitting excessive thermal stress. The bellows depth, pitch and wall thickness are precisely designed to provide the required radial compensation and sufficient pressure resistance.

[0037] The wedge-shaped metal gasket 5 is arranged between the multi-layer wire mesh 11 and the concave surface of the elastic airflow distribution plate 2. The geometric shape of the wedge-shaped metal gasket 5 is a ring structure with a wedge-shaped cross section, which is made of a metal material with plastic deformation ability (such as soft stainless steel, copper or nickel alloy). By applying a pre-tightening force through the bolt 12, the wedge-shaped metal gasket 5 can be plastically deformed and fill the irregular gap between the multi-layer wire mesh 11 and the concave surface of the elastic airflow distribution plate 2. This plastic deformation sealing mechanism provides a reliable static seal to prevent adsorbent or catalyst particles from leaking through the gap, while ensuring close contact between the multi-layer wire mesh 11 and the elastic airflow distribution plate 2, improving the sealing and stability of the entire flow guide support device. The bolt 12 passes through the multi-layer wire mesh 11 and the wedge-shaped metal gasket 5, and is screwed into the threaded hole of the elastic airflow distribution plate 2. By uniformly tightening the bolt 12, a uniform pre-tightening force is applied to the wedge-shaped metal gasket 5.

[0038] The present application also includes a reinforced flow guide structure composed of a rotational flow suppression rib 7 and a variable-diameter flow guide hole 8. The rotational flow suppression rib 7 is a plurality of spiral ribs arranged radially, extending radially in a spiral line from the center to the edge, and is fixedly arranged on 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, and their height, width and spiral angle are precisely designed to produce a pre-rotation or guiding effect on the incoming airflow before the airflow passes through the elastic airflow distribution plate 2, thereby suppressing large-scale vortices in the airflow, improving the uniformity of airflow distribution in the adsorption tower, reducing the vortex intensity of the airflow, and avoiding adsorbent wear caused by local airflow scouring. The number and spacing of the rotational flow suppression ribs 7 are uniformly arranged to ensure effective regulation of the airflow over the entire plate surface.

[0039] The variable-diameter flow guide hole 8 is directly drilled on the plate body of the elastic airflow distribution plate 2. The diameters of these holes are designed as gradient diameters according to their distance from the air inlet. The hole diameters range from 3-8mm, and the hole spacing is 15-25mm. Specifically, the flow guide holes near the air inlet area have smaller diameters, while the flow guide holes away from the air inlet area have gradually increasing diameters. This gradient diameter design adjusts the airflow resistance in different areas, allowing the overall airflow to be more uniformly distributed after passing through the elastic airflow distribution plate 2. The arrangement of the holes is in the form of a regular polygon to ensure the uniformity of the plate opening rate and the structural strength. The edges of the holes are chamfered or rounded to reduce resistance loss and disturbance to the airflow when the airflow passes through. The number, distribution density and specific gradient variation of the variable-diameter flow guide holes 8 are designed according to the flow field simulation results of the adsorption tower to ensure the high consistency of 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 an annular metal structure welded to the outer peripheral edge of the elastic airflow distribution plate 2. The surface of the connecting ring 9 is flat and the thickness is uniform, providing a stable and reliable vacuum electron beam welding interface for the inner side end of the metal bellows seal 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. The radial width and axial height are reasonably designed, which can withstand the thermal stress during welding and provide necessary structural support for the metal bellows seal ring 4 during the operation of the entire device.

[0041] The adsorption tower convex head 10, which constitutes the external container structure of the application, is a typical adsorption tower end cover component, usually in the shape of an ellipse, a disc or other convex structure. The inner wall of the straight edge segment provides a rigid welding installation position for the support device fixing ring 1, and the inner curved surface provides a sliding support surface for the flexible support leg 3 through the sliding guide 6. The adsorption tower convex head 10 is usually made of high-strength carbon steel or alloy steel, with sufficient thickness and rigidity to withstand the high pressure in the adsorption tower.

[0042] The multi-layer wire mesh 11 is arranged on the concave surface of the elastic airflow distribution plate 2 and directly contacts the concave surface of the elastic airflow distribution plate 2. The multi-layer wire mesh 11 is usually made of multiple layers of metal wire mesh with different mesh sizes, made of stainless steel material with high temperature resistance and corrosion resistance. 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. The edges of the multi-layer wire mesh 11 are sealed with the wedge-shaped metal gasket 5 and the elastic airflow distribution plate 2 to ensure the particle retention effect.

[0043] The bolt 12 is used to apply pre-tightening force 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 the pre-designed threaded hole of the elastic airflow distribution plate 2. The bolt 12 is usually made of high-strength, corrosion-resistant bolt steel material, and its specifications (such as diameter, length, thread type) match the threaded hole on the elastic airflow distribution plate 2 to ensure the reliability of the fastening connection. Multiple bolts 12 are evenly distributed circumferentially, and by tightening these bolts 12 step by step, uniform pre-tightening of the wedge-shaped metal gasket 5 can be achieved, so that it is plastically deformed and fills the gap to form a reliable seal.

[0044] The working principle of the present application is as follows: when the adsorption tower is put into operation, high-temperature process gas enters the inside of the adsorption tower convex head 10 from the gas inlet, first impacting the convex surface of the elastic airflow distribution plate 2. Before the airflow passes through the elastic airflow distribution plate 2, it first contacts the cyclone suppression rib 7, and the spiral rib has a pre-rotation 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 flow guide hole 8, and due to the gradient pore size design of the flow guide hole, the small aperture hole near the gas inlet area provides greater airflow resistance, and the large aperture hole away from the gas inlet area provides smaller 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 flow guide hole is uniformly distributed on the entire cross-section of the adsorption tower. The uniformly distributed airflow continues to pass through the multi-layer wire mesh 11 and enters the adsorbent or catalyst bed for adsorption or catalytic reaction process.

[0045] Under high-temperature working conditions, the internal components of the adsorption tower expand due to the increase in temperature. The elastic airflow distribution plate 2, due to its double-layer corrugated metal plate structure, absorbs the thermal expansion displacement through the elastic deformation of the corrugated structure unit in the radial direction, with a compensation amount of ±5mm. At the same time, the Ω-shaped structure of the flexible support leg 3 adapts to the axial thermal expansion through the elastic compression of the arc-shaped part in the axial direction, with a compensation amount 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 adsorption tower convex head 10, further absorbing the radial thermal displacement. The metal bellows seal ring 4 adapts to the relative radial displacement between the elastic airflow distribution plate 2 and the support device fixing ring 1 through its annular corrugated structure, while maintaining the integrity of the full-metal seal. This multi-dimensional thermal compensation mechanism effectively avoids stress concentration caused by thermal expansion differences, ensuring the structural stability and sealing reliability of the device under high-temperature working conditions.

[0046] Under alternating pressure working 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 the structural deformation caused by pressure fluctuations. The flexible nature of the metal bellows seal ring 4 allows it to withstand pressure fluctuations without affecting the sealing performance. The plastic deformation of the wedge-shaped metal gasket 5 under the pre-tightening force 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 realizes reliable operation under long-term high-temperature and alternating pressure conditions through the organic combination of rigid fixation and flexible compensation.

[0047] In summary, the present application rigidly welds the support device fixing ring 1 to the adsorption tower convex head 10, and flexibly connects the elastic airflow distribution plate 2 to the support device fixing ring 1 through the metal bellows sealing ring 4. The bottom of the elastic airflow distribution plate 2 is provided with an Ω-shaped flexible support leg 3, and the lower end is slidably connected to the inner wall of the adsorption tower convex head 10 through a sliding guide rail 6. The bellows structure of the elastic airflow distribution plate 2 itself can absorb the radial thermal expansion deformation, and the compensation amount is set to ±5mm. The Ω-shaped structure of the flexible support leg 3 can be compressed or stretched in the axial direction, and the compensation amount is set to ±3mm. The annular bellows structure of the metal bellows sealing ring 4 can adapt to the radial thermal displacement, thereby forming a multi-dimensional thermal compensation and all-metal sealed composite structure system. The cyclone suppression rib 7 and the variable-diameter guide hole 8 in the device cooperate to effectively improve the uniformity of airflow distribution in the adsorption tower and suppress the vortex intensity of the airflow through precise geometric design. The structure of the entire device is made of high-temperature-resistant and corrosion-resistant metal materials, and is assembled through reliable welding and mechanical connection methods, ensuring the structural integrity and sealing reliability under long-term high temperature, high pressure and alternating pressure conditions.

[0048] It should be noted that the standard parts used in the present application can be purchased from the market, and can be ordered according to the description and drawings. The specific connection method of each part uses conventional means such as bolts, rivets and welding in the prior art, and the machinery and equipment uses conventional types in the prior art.

[0049] The above is only a preferred embodiment of the present application, and does not limit the present application in any form. Any skilled person in the art can make some changes or modifications to the above disclosed technical content without departing from the scope of the present application, and any simple modification, equivalent change and modification of the above embodiment according to the technical essence of the present application are still within the scope of the present application.

Claims

1. A full metal sealed adsorption tower guide support device with heat 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.

2. The full-metal sealed adsorptive tower guide support device with heat 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 full-metal sealed adsorber tower 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, 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 variable diameter flow guiding hole (8) is designed with a gradient aperture according to the distance from the air inlet, with an aperture range of 3-8 mm and an aperture spacing of 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).

Images