Intelligent krypton and xenon product extraction device

Abstract

The application discloses a kind of intelligent poor krypton-xenon product extraction device, including air separation tower, the air separation tower includes multiple cryogenic tubes, the connecting place between two the cryogenic tubes of intercommunication is connected by two flanges, it is characterized in that, still including two sealing bodies between two the flanges, one of the sealing bodies sliding sleeve is connected on another sealing body, pressure compensation component is connected between two the sealing bodies, it is used to extrude two the sealing bodies to carry out elastic compensation outside;The application provides a kind of intelligent poor krypton-xenon product extraction device, in normal sealing state, one of the sealing bodies sliding sleeve is connected on another sealing body, and there is the tendency of movement outside between them by pressure compensation component, when the gap between sealing body and flange surface appears due to aging, thermal expansion and contraction and the like, two sealing bodies are pushed outside by pressure compensation component to realize resealing.

Description

Technical Field

[0001] This invention relates to air separation equipment technology, specifically to an intelligent krypton-poor xenon product extraction device. Background Technology

[0002] An air separation tower is an air separation device. Due to the requirements of the process, this equipment is generally built relatively tall, resembling an iron tower, hence its name. It plays a very important role in large-scale oxygen production industries, and the extraction of lean krypton xenon products also requires the use of air separation towers. As a key piece of equipment in the deep cryogenic production of oxygen and lean krypton xenon products, the air separation tower has cryogenic valves that are in contact with the low-temperature gas for extended periods. The cryogenic valves are connected to the cryogenic pipelines connecting the air separation tower via flanges. The flange connection consists of two flanges, and a sealing ring is required between the two flanges to achieve a tight seal. Therefore, the sealing performance of the valves is crucial for ensuring the normal operation of the air separation tower.

[0003] In the prior art, patent application number CN201911190875.1, entitled "An Invention Patent for an Air Separation Tower Foundation Structure," describes an air separation tower foundation structure. This structure includes a foundation body, the bottom of which is connected to a pile foundation. The foundation body contains an insulating and waterproof layer that separates the foundation into layers. At least one cold-insulating ventilation pipe is installed within the foundation body. An air separation tower connection portion, comprising multiple cold-insulating layers, is located on the foundation body. A surface layer is laid on top of the foundation body. This air separation tower foundation structure effectively isolates the air separation tower from the foundation body through multiple cold-insulating measures, improving cold insulation, reducing frost damage to the foundation body, and extending its service life.

[0004] In existing technologies, key components of air separation towers, valves, or the connection between valves and pipelines are connected by flanges, and sealing rings are installed between the flanges. However, since low-temperature gas often passes between valves and pipelines, after long-term operation, gaps can easily appear between the sealing rings and the flange surfaces due to aging, thermal expansion and contraction, etc., which can also lead to leakage and cold loss. Existing technologies do not have a good solution other than adding insulation structures and setting up early warning mechanisms. Typically, valves and other parts need to be replaced after five or six years of use in the air separation tower. Replacing poor sealing with large-scale component replacement wastes manpower and resources and affects the efficiency of extracting depleted krypton xenon products. Summary of the Invention

[0005] The purpose of this invention is to provide an intelligent krypton-poor xenon product extraction device to overcome the above-mentioned shortcomings in the prior art.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] An intelligent krypton-depleted xenon product extraction device includes an air separation tower, which includes multiple cryogenic tubes. The connection between two connected cryogenic tubes is achieved through two flanges. The device also includes two sealing bodies disposed between the two flanges, with one sealing body slidably fitted onto the other sealing body. A pressure compensation component is connected between the two sealing bodies to compress the two sealing bodies outward for elastic compensation.

[0008] In the aforementioned intelligent krypton-deficient xenon product extraction device, a first annular joint is formed on the side wall of one of the sealing bodies, and a second annular joint is formed on the side wall of the other sealing body, wherein the first annular joint and the second annular joint are slidably sleeved together.

[0009] In the aforementioned intelligent krypton-poor xenon product extraction device, an annular limiting part is provided on the end face of each of the two sealed bodies that are far apart from each other.

[0010] In the aforementioned intelligent krypton-poor xenon product extraction device, an annular groove is provided on the flange surface of the flange, and the annular groove and the annular limiting part are correspondingly matched.

[0011] The aforementioned intelligent krypton-deficient xenon product extraction device includes a pressure compensation component comprising a working groove formed on a first annular joint, a first slider fixed in the working groove, a second slider fixed on the second annular joint, and a compression spring connecting the first slider and the second slider.

[0012] The aforementioned intelligent krypton-deficient xenon product extraction device also includes a cold leakage warning component, which is used to warn of low-temperature gas leaks.

[0013] The aforementioned intelligent krypton-deficient xenon product extraction device includes a cold leakage warning component comprising a sealing frame fitted onto the flange connection, a through-hole being provided inside the sealing frame, and a warning ejection unit being provided inside the sealing frame. When low-temperature gas leaks, the warning ejection unit ejects through the through-hole to issue a warning.

[0014] The aforementioned intelligent krypton-deficient xenon product extraction device includes a warning ejection unit comprising a liquid storage frame fixed to the inner wall of a sealed frame. A top plate is slidably installed inside the liquid storage frame, dividing the liquid storage frame into a liquid storage area and an ejection area. The end of the liquid storage frame near the through-hole is the ejection area, and the end of the liquid storage frame away from the through-hole is the liquid storage area. The liquid storage area is filled with water. The end of the top plate away from the water is connected to the sealed frame by a compression spring. An ejection block is fixedly installed at the end of the top plate away from the water, and the ejection block is correspondingly set to the through-hole.

[0015] The aforementioned intelligent krypton-poor xenon product extraction device has a shielding layer on the penetration port.

[0016] The aforementioned intelligent krypton-poor xenon product extraction device has a sliding sealing strip on the side wall of the top plate, which abuts against the inner wall of the liquid storage frame.

[0017] In the above technical solution, the present invention provides an intelligent krypton-depleted xenon product extraction device, in which two sealing bodies are combined to form a complete sealing component. The complete sealing component is squeezed between two flanges to seal the connection. In the normal sealing state, one sealing body slides onto the other sealing body, and the two have a tendency to move outward through the pressure compensation component. When a gap appears between the sealing body and the flange surface due to aging, thermal expansion and contraction, etc., the pressure compensation component pushes the two sealing bodies outward to achieve resealing. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0019] Figure 1 This is a schematic diagram of the internal structure of a sealing body provided in one embodiment of the present invention.

[0020] Figure 2 This is a three-dimensional structural diagram of a sealing body provided in one embodiment of the present invention.

[0021] Figure 3 This is a partial cross-sectional view of an intelligent krypton-poor xenon product extraction device provided in another embodiment of the present invention.

[0022] Figure 4 This is a partial three-dimensional structural schematic diagram of an intelligent krypton-poor xenon product extraction device provided in another embodiment of the present invention.

[0023] Figure 5 For the present invention Figure 3 A magnified view of the area at point X.

[0024] Figure 6 This is a schematic diagram of the internal structure of a square body provided in another embodiment of the present invention.

[0025] Figure 7 This is a cross-sectional view of a sealing body provided in another embodiment of the present invention.

[0026] Figure 8 This is a partial cross-sectional view of an intelligent krypton-poor xenon product extraction device provided in another embodiment of the present invention.

[0027] Figure 9 For the present invention Figure 8 A magnified view of the area at point Y.

[0028] Figure 10 This is a schematic diagram of the structure of an early warning ejection unit provided in another embodiment of the present invention.

[0029] Figure 11 For the present invention Figure 10 A magnified view of the Z-axis.

[0030] In the above figures, straight lines and different cross-sectional lines are drawn at their connection points to clearly show the differences between the sealing body, the annular protrusion, the first ring joint and the second ring joint. However, those skilled in the art should understand that the sealing body itself should be an integral structure rather than a split structure.

[0031] Explanation of reference numerals in the attached figures:

[0032] 1. Flange; 11. Sealing body; 111. Annular protrusion; 12. Threaded rod; 13. Pressure compensation assembly; 131. Working groove; 132. First slider; 133. Second slider; 134. Compression spring; 14. First annular joint; 15. Second annular joint; 16. Annular limiting part; 17. Annular groove; 18. Thickness compensation assembly; 181. Arc-shaped sealing limiting part; 182. Rotating shaft; 183. Threaded section; 184. Arc-shaped clamping part; 185. Connecting part; 186. Elastic limiting rod; 2. Pressure unit; 21. Square body; 22. Working chamber; 23. Rotating block; 24. Torque 25. Spring; 26. Anti-reverse groove; 27. Trapezoidal locking block; 28. Limiting spring; 39. Magnetic block; 30. Cold leakage warning assembly; 31. Sealing frame; 32. Through port; 33. Warning ejection unit; 34. Liquid storage frame; 35. Top plate; 36. Compression spring; 37. Ejection block; 38. Self-sealing assembly; 39. Mounting rod; 30. Rotating roller; 31. Pushing block; 32. Pushing ring; 33. Feeding block; 34. Motion shaft; 35. Tensioning line; 36. Anti-reset assembly; 37. Warning block; 38. Snap-fit ​​groove; 39. Snap-fit ​​rod; 30. Stop block. Detailed Implementation

[0033] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0034] In various embodiments of the present invention, some components need to be located at ultra-low temperatures, such as below -100 degrees Celsius or even -150 degrees Celsius. The specific material options are existing technologies. For example, existing air separation towers are themselves located at such low temperatures. The sealing materials, valves, control structures, heat exchange structures, transmission structures, etc. of existing air separation towers are all designed for low-temperature environments, and will not be described in detail.

[0035] like Figure 1-11As shown, this embodiment of the invention provides an intelligent krypton-poor xenon product extraction device. (See attached document.) Figure 1 The system includes an air separation tower, which includes multiple cryogenic tubes. The connection between two connected cryogenic tubes is connected by two flanges 1. The system also includes two sealing bodies 11 disposed between the two flanges 1. One of the sealing bodies 11 is slidably sleeved on the other sealing body 11. A pressure compensation component 13 is connected between the two sealing bodies 11, which is used to squeeze the two sealing bodies 11 outward for elastic compensation.

[0036] Specifically, in this embodiment, the air separation tower is a conventional device in the prior art, mainly used to gradually separate inert gases such as krypton, xenon, and argon from liquid air. Further details are omitted here. Both sealing bodies 11 are annular components, and they are slidably fitted together to form a complete sealing component (the entire structure of the two sealing bodies 11 is collectively referred to as the sealing component). This complete sealing component is pressed between the two flanges 1 for sealing. In the normal sealing state, one sealing body 11 is slidably fitted onto the other sealing body 11, and the two are connected by a pressure compensation component 13. The device maintains a tight seal at the connection point even when the two components slide. When a gap appears between the sealing body 11 and the flange surface due to aging, thermal expansion and contraction, etc., the pressure compensation component 13 pushes the sealing body 11 outward to achieve resealing, ensuring that the sealing body 11 is always pressed against the flange surface. This device, through the cooperation between the sealing body 11 and the pressure compensation component 13, ensures the sealing strength of the flange connection between the cryogenic valve and the cryogenic pipeline, improves the sealing effect, extends the sealing time, reduces the frequency of cryogenic gas leakage, avoids large-scale component replacement, and saves manpower and resources.

[0037] Obviously, the flanges 1 are connected by a threaded rod 12, and the distance between the flanges 1 can be adjusted by rotating the threaded rod 12.

[0038] In another embodiment provided by the present invention, see [reference needed]. Figure 1 and Figure 2One of the sealing bodies 11 has a first annular joint 14 formed on its sidewall, and the other sealing body 11 has a second annular joint 15 formed on its sidewall. The first annular joint 14 and the second annular joint 15 are slidably fitted together. The diameter of the first annular joint 14 is larger than the diameter of the second annular joint 15, and the thickness of the first annular joint 14 is equal to the thickness of the second annular joint 15. The sum of the thicknesses of the first annular joint 14 and the second annular joint 15 is equal to the thickness of the sealing body 11. This is so that when the first annular joint 14 is slidably fitted onto the second annular joint 15, the two form a complete arc surface and there will be no protrusions on the two sealing bodies 11. When the two sealing bodies 11 move outward, the first annular joint 14 slides on the second annular joint 15. At this time, the fit between the first annular joint 14 and the second annular joint 15 is used to ensure a sealing environment.

[0039] In another embodiment provided by the present invention, see [reference needed]. Figures 2-4 An annular limiting portion 16 is provided on the end face of each of the two sealing bodies 11 that are far apart from each other; an annular groove 17 is provided on the flange face of the flange 1, and the annular groove 17 and the annular limiting portion 16 are correspondingly matched; in the normal sealing state, the annular limiting portion 16 is inserted into the annular groove 17. This is to limit the position of the two sealing bodies 11 when installing the flange 1, so as to facilitate the installation of the flange 1 and the sealing components.

[0040] In another embodiment provided by the present invention, see [reference needed]. Figure 2 and Figure 5 The pressure compensation component 13 includes a working groove 131 formed on the first annular joint 14. A first slider 132 is fixed in the working groove 131, and a second slider 133 is fixed on the second annular joint 15. A compression spring 134 is connected between the first slider 132 and the second slider 133. The initial state of the compression spring 134 is a compressed state. When a gap appears between the sealing body 11 and the flange surface due to aging, thermal expansion and contraction, etc., the first slider 132 and the second slider 133 move away from each other under the elastic action of the compression spring 134, thereby causing the first annular joint 14 and the second annular joint 15 to move away from each other. At this time, both sealing bodies 11 are squeezed onto the flange 1, thus realizing the elastic compensation of the sealing body 11.

[0041] Furthermore, see Figure 5 and Figure 6When a sealing component is in prolonged contact with cold air, its contraction is comprehensive. The above embodiment actually solves the axial contraction of the sealing component. However, the sealing component also contracts in the diameter and its own thickness. Both of these contraction modes will lead to a decrease in sealing performance and leakage of low-temperature gas. Therefore, this embodiment provides a further technical solution, including a thickness compensation component 18. The thickness compensation component 18 includes two sets of arc-shaped sealing limiting parts 181, which are correspondingly arranged with two sealing bodies 11. Each set of arc-shaped sealing limiting parts 181 includes multiple arc-shaped sealing limiting parts 181 arranged circumferentially along the inner wall of the sealing body 11. The arc-shaped sealing limiting parts 181 are tightly attached to the corresponding On the inner wall of the sealing body 11, a plurality of rotating shafts 182 are rotatably passed through the sealing body 11. The rotating shafts 182 are correspondingly arranged with the arc-shaped sealing limiting part 181 and the rotating shafts 182 rotatably pass through the arc-shaped sealing limiting part 181. A clamping block is fixed at one end of the rotating shaft 182 inside the sealing body 11. The clamping block is used to limit the position of the arc-shaped sealing limiting part 181. The arc-shaped sealing limiting part 181 can internally support the sealing body 11 to prevent it from shrinking in the diameter direction. A threaded section 183 is provided on the rotating shaft 182. An arc-shaped clamping member 184 is threadedly connected to the threaded section 183. A pressure unit 2 is also provided at the end of the rotating shaft 182 away from the sealing body 11. The pressure unit 2 is used to maintain The rotational trend of the rotating shaft 182 ensures the pressure of the arc-shaped clamping member 184. The pressure unit 2 is slidably connected to the corresponding threaded rod 12 via the connecting member 185. An elastic limiting rod 186 is also fixed on the connecting member 185. The movable end of the elastic limiting rod 186 can only move towards or away from the sealing body 11 in the vertical direction. The end of the elastic limiting rod 186 near the sealing body 11 is fixed to the arc-shaped clamping member 184 to ensure that the arc-shaped clamping member 184 can press inward normally. The pressure unit 2 includes a square body 21, and a working cavity 22 is opened in the square body 21. The rotating shaft 182 is rotatably connected in the working cavity 22. A rotating block 23 is fixedly connected to the rotating shaft 182. The rotating shaft 182 and the working block 23 are connected to each other. A torsion spring 24 is connected between the inner walls of the working cavity 22. The torsion spring 24 is initially in a compressed state. Multiple anti-reverse grooves 25 are also formed on the inner wall of the working cavity 22, arranged circumferentially around the rotation axis 182. A groove is formed on the rotating block 23, and a trapezoidal locking block 26 is slidably connected within the groove. The trapezoidal locking block 26 is engaged within one of the anti-reverse grooves 25. A limit spring 27 connects the trapezoidal locking block 26 and the groove. One end of the trapezoidal locking block 26 has an inclined surface, which is used to compress the trapezoidal locking block 26 into the groove when it rotates. The end of the trapezoidal locking block 26 away from the inclined surface is set as a flat surface to prevent the trapezoidal locking block 26 from moving in the opposite direction.This design prevents the sealing body 11 from causing the rotating shaft 182 to rotate in the opposite direction during thermal expansion and contraction, thus ensuring that the arc-shaped clamping member 184 maintains pressure. When the sealing body 11 shrinks in thickness, the torsion spring 24 drives the rotating block 23 to rotate. At this time, the trapezoidal locking block 26 moves accordingly and enters the next anti-reverse groove 25. The movement of the rotating block 23 drives the rotating shaft 182 to rotate, thereby squeezing the arc-shaped clamping member 184 towards the sealing body 11, thus maintaining the pressure of the arc-shaped clamping member 184. Through the squeezing between the arc-shaped clamping member 184 and the arc-shaped sealing limit part 181, the sealing body 11 can elastically extend in the axial direction when its thickness decreases, thus ensuring that the sealing body 11 always adheres tightly to the side wall of the flange 1. Through the above technical solution, the sealing component can still adhere tightly to the flange 1 when it shrinks in the diameter direction and its own thickness, ensuring the sealing effect of the sealing body 11.

[0042] For further details, please refer to [link / reference]. Figure 6 and Figure 7Obviously, when the torsion spring 24 drives the rotating shaft 182 to rotate, the force it exerts on the rotating block 23 gradually decreases with the movement of the torsion spring 24. This will lead to insufficient pressure on the sealing body 11 from the arc-shaped clamping part 184 and the arc-shaped sealing limit part 181 in the later stages of operation of the sealing body 11, as the thickness of the sealing body 11 becomes smaller. Therefore, this embodiment provides a further improvement: two magnetic blocks 28 are fixedly provided in the working cavity 22. The two magnetic blocks 28 are respectively matched with the rotating block 23. In this embodiment, the rotating block 23 is also made of magnetic material, and the rotating block 23 and its corresponding magnetic block 28 are mutually attracted, that is, the magnetic attraction between the adjacent ends of the rotating block 23 and its corresponding magnetic block 28 is strong. Because the magnetic forces between the rotating block 23 and its corresponding magnetic block 28 increase at a rate greater than the rate at which the force of the torsion spring 24 decays after it has moved to a certain extent, the longer the rotating block 23 rotates, the greater the force it experiences. As the rotating block 23 rotates, it gradually approaches the corresponding magnetic block 28, and the attraction between the magnetic block 28 and the rotating block 23 gradually increases. Thus, even after the torsion spring 24 extends to a certain length, the force on the rotating block 23 remains constant and gradually increases. This results in a smaller thickness of the sealing body 11, leading to greater pressure on the sealing body 11 from the arc-shaped clamping member 184 and the arc-shaped sealing limit part 181. To further enhance the performance of the above embodiment, the sealing body 11 is further designed. An annular protrusion 111 is formed at one of the outer ends of the sealing body 11 that are far apart from each other. The arc-shaped clamping member 184 presses against the annular protrusion 111. The annular protrusion 111 is inclined towards the side that is close to each other. That is to say, in cross-section, the side of the annular protrusion 111 that is close to each other forms an annular protrusion, and the side of the annular protrusion 111 that is far apart from each other forms an annular inclined portion. The annular inclined portion is attached to the side wall of the flange 1. The arc-shaped clamping member 184 presses against the annular protrusion on the annular protrusion 111. When the arc-shaped clamping member 184 presses inward, it first presses the annular protrusion 111 inward, thereby causing the sealing body 11 to move inward synchronously. At this time, the sealing body 11 is blocked by the arc-shaped sealing limiting portion 181. As the sealing body 11 moves inward, the inward pressing of the arc-shaped clamping member 184 gradually increases the pressure on the annular protrusion on the annular protrusion 111, causing the volume of the annular protrusion to decrease and the volume of the annular inclined portion to increase. Thus, the thickness at the connection between the annular protrusion 111 and the flange 1 increases accordingly. In this embodiment, the inward pressing of the sealing body 11 is to avoid a gap between the sealing body 11 and the flange 1 due to the decrease in thickness. The annular protrusion 111 is a further improvement, so that the arc-shaped clamping member 184 presses the annular protrusion 111 while pressing the sealing body 11. In this way, the sealing body 11 can not only elastically extend in the axial direction, but also the connection between the sealing body 11 and the flange 1 can be compressed and thickened, further increasing the sealing effect.

[0043] In another embodiment provided by the present invention, see [reference needed]. Figure 8 It also includes a cold leakage warning component 3, which is used to warn of low-temperature gas leaks.

[0044] In another embodiment provided by the present invention, see [reference needed]. Figure 8 and Figure 9 The cold gas leakage warning component 3 includes a sealing frame 31 fitted onto the flange 1 connection. The sealing frame 31 is detachable for easy installation and can form another layer of insulation space and leakage protection space. A through-hole 32 is provided inside the sealing frame 31. An early warning ejection unit 33 is also provided inside the sealing frame 31. When low-temperature gas leaks, the early warning ejection unit 33 ejects through the through-hole 32 to warn.

[0045] In another embodiment provided by the present invention, see [reference needed]. Figure 9 and Figure 10 The warning ejection unit 33 includes a liquid storage frame 331 fixed to the inner wall of the sealing frame 31. A top plate 332 is slidably installed inside the liquid storage frame 331, dividing the liquid storage frame 331 into a liquid storage area and an ejection area. The end of the liquid storage frame 331 near the through-hole 32 is the ejection area, and the end of the liquid storage frame 331 away from the through-hole 32 is the liquid storage area. The liquid storage area is filled with water, which is initially liquid. When low-temperature gas leaks, the liquid water quickly freezes and becomes solid. The volume of the frozen liquid water also increases rapidly, which can then be used as a power source to drive the top plate 332 to move. The top plate 332 is located away from the water. One end is connected to the sealing frame 31 by a compression spring 333. The top plate 332 is fixed with an ejector block 334 at the end away from the water. The surface of the ejector block 334 away from the top plate 332 is coated with warning paint. The warning paint can be of various colors, such as red, white and green, preferably red. The ejector block 334 is correspondingly set with the through-hole 32. When the low temperature gas leaks, the low temperature gas will enter the sealing frame 31 and come into contact with the liquid storage frame 331, thereby cooling the water. When the water cools down, its volume gradually increases and pushes the top plate 332 to slide in the liquid storage frame 331, thereby causing the ejector block 334 to be ejected from the through-hole 32 as a warning.

[0046] A shielding layer is provided on the through-hole 32 to shield the ejector block 334 and prevent the ejector block 334 from being observed by the staff at the beginning.

[0047] The above-mentioned early warning method can be used in environments that staff can directly observe. In addition to visible warnings, other obvious information is needed to warn of air leakage, such as sound warnings. An infrared sensor is installed in the through-hole 32, and a sound alarm is installed on the flange 1. Both the infrared sensor and the sound alarm are electrically connected to the control unit. When the ejector block 334 is ejected from the through-hole 32, the infrared sensor receives the information and transmits it to the control unit. The control unit then controls the sound alarm to work, thereby expanding the warning range and timely transmitting information about air leakage.

[0048] In another embodiment of the present invention, a sliding sealing strip is provided on the side wall of the top plate 332. The sliding sealing strip abuts against the inner wall of the liquid storage frame 331, which can effectively prevent water from seeping into the top outlet area and ensure the top outlet length of the early warning top outlet unit 33.

[0049] For further details, please refer to [link / reference]. Figure 9-10When cold air leaks, the early warning ejection unit 33 can provide timely warnings. However, it is impossible for staff to be constantly aware of cold air leaks. If staff cannot promptly detect the leak, it will continue for a period of time, severely affecting the working efficiency of the air separation tower and polluting the working environment. Therefore, this embodiment provides a further technical solution, including two opposing self-sealing components 34. Each self-sealing component 34 includes a mounting rod 341 sleeved on the threaded rod 12, with one end of the mounting rod 341 near the sealing body 11. A rotating roller 342 is rotatably mounted, and multiple push blocks 343 are circumferentially mounted on the outer side wall of the rotating roller 342. A push ring 344 is slidably sleeved on the sealing body 11. The push ring 344 is correspondingly arranged with the arc-shaped clamping member 184. Multiple feed blocks 345 are fixed on the push ring 344, and the push blocks 343 and feed blocks 345 are correspondingly fitted. When the rotating roller 342 rotates, the push blocks 343 move accordingly and can push the feed blocks 345 towards the arc-shaped clamping member 184. The self-sealing assembly 34 also includes a component fixed to the bottom of the top plate 332. A hollow frame is fixed to the motion shaft 346 at one end of the threaded rod 12. The hollow frame allows the motion shaft 346 to move freely upward. A tension line 347 is connected to the end of the motion shaft 346 near the sealing body 11. The tension line 347 is fixed to the side of the rotating roller 342 that is away from it. When cold air leaks, the top plate 332 moves towards the through opening 32, thereby driving the motion shaft 346 to move away from the sealing body 11. The tension line 347 moves accordingly and drives the rotating roller 342 to rotate. The rotation of 342 drives the propulsion block 343 to move and pushes the propulsion ring 344 towards the arc-shaped clamping member 184, thereby applying pressure to the arc-shaped clamping member 184 and passively increasing the compressive force between the sealing body 11 and the flange 1. This passively strengthens the sealing effect and reduces the amount of cold air leakage after cold air leakage. In this way, when cold air leaks, the water will increase in volume, which will drive the top plate 332 to move. The movement of the top plate 332 can achieve two functions: first, to issue a cold air leakage warning; and second, to passively further strengthen the compressive strength at the connection between the sealing body 11 and the flange 1.

[0050] For further details, please refer to [link / reference]. Figure 11Obviously, when the self-sealing component 34 is working, the amount of cold air leakage will gradually decrease, and thus the water volume will decrease accordingly. The top plate 332 will promptly reset under the elastic action of the compression spring 333. Consequently, the ejector block 334 will also promptly return to its initial position from the through-hole 32, affecting the operator's judgment of whether there is a cold air leak. Therefore, this embodiment provides a further technical solution, including an anti-reset component 35 installed in the through-hole 32. The anti-reset component 35 includes a warning block 351 slidably installed in the through-hole 32. Multiple locking slots 352 are provided on both sides of the warning block 351. A square groove is provided on the through-hole 32, and a locking rod 353 is rotatably installed in the square groove. The locking rod 353 engages with... The snap-fit ​​groove 352 is configured to cooperate with the snap-fit ​​rod 353, which is snapped into the snap-fit ​​groove 352. A stop block 354 is fixed in the square groove. The stop block 354 is in close contact with the end face of the snap-fit ​​rod 353 near the sealing body 11. The stop block 354 is used to prevent the snap-fit ​​rod 353 from rotating towards the sealing body 11. When the top plate 332 moves away from the sealing body 11, it pushes the ejector block 334 to move. The ejector block 334 pushes the warning block 351 away from the through-hole 32. At this time, the snap-fit ​​rod 353 is snapped into the snap-fit ​​groove 352, which can prevent the warning block 351 from resetting. In this way, even if the cold air no longer leaks, the warning block 351 will not reset, thus ensuring that the information of cold air leakage can be received by the staff in a timely manner.

[0051] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A smart krypton-lean xenon product extraction device, comprising an air separation tower, the air separation tower including a plurality of cryogenic tubes, wherein the connection between two interconnected cryogenic tubes is via two flanges, characterized in that, It also includes two sealing bodies disposed between the two flanges, one of the sealing bodies being slidably fitted onto the other sealing body, and a pressure compensation assembly connected between the two sealing bodies for outward compression of the two sealing bodies to provide elastic compensation. It also includes a thickness compensation component, which comprises two sets of arc-shaped sealing limiting parts, each set corresponding to two sealing bodies. Each set of arc-shaped sealing limiting parts includes multiple arc-shaped sealing limiting parts arranged circumferentially along the inner wall of the sealing body. The arc-shaped sealing limiting parts are tightly attached to the inner wall of the corresponding sealing body. Multiple rotating shafts rotatably pass through the sealing body, and the rotating shafts are correspondingly arranged to the arc-shaped sealing limiting parts and rotatably pass through them. A clamping block is fixed at one end of the rotating shaft inside the sealing body. The clamping block is used to limit the position of the arc-shaped sealing limiting parts. The arc-shaped sealing limiting parts can be used to compensate for the thickness of the sealing body. The sealing body is internally supported to prevent shrinkage in the diametrical direction. A threaded section is provided on the rotating shaft, and an arc-shaped clamping element is threadedly connected to this section. A pressure unit is also provided at the end of the rotating shaft away from the sealing body. This pressure unit maintains the rotational trend of the rotating shaft, thereby ensuring the pressure of the arc-shaped clamping element. The pressure unit is slidably connected to a corresponding threaded rod via a connector. An elastic limiting rod is also fixed to the connector. The movable end of the elastic limiting rod can only move towards or away from the sealing body vertically. The end of the elastic limiting rod near the sealing body is fixed to the arc-shaped clamping element to ensure that the arc-shaped clamping element can properly compress inward. The pressure unit includes a cuboid body with a working chamber inside. A rotating shaft is rotatably connected to the working chamber, and a rotating block is fixedly connected to the rotating shaft. A torsion spring is connected between the rotating shaft and the inner wall of the working chamber, and the torsion spring is initially in a compressed state. Multiple anti-reverse grooves are also formed on the inner wall of the working chamber, arranged circumferentially around the rotating shaft. A groove is formed on the rotating block, and a trapezoidal locking block is slidably connected within the groove. The trapezoidal locking block engages with one of the anti-reverse grooves. A limit spring connects the trapezoidal locking block and the groove. One end of the trapezoidal locking block has an inclined surface. The surface is used to squeeze the trapezoidal locking block into the groove when the trapezoidal locking block rotates. The end of the trapezoidal locking block away from the inclined surface is set as a plane to prevent the trapezoidal locking block from moving in the opposite direction. When the thickness of the sealing body shrinks, the torsion spring drives the rotating block to rotate. At this time, the trapezoidal locking block moves and enters the next anti-reverse groove. The movement of the rotating block drives the rotating shaft to rotate, thereby squeezing the arc-shaped clamping member in the direction closer to the sealing body, thereby maintaining the pressure of the arc-shaped clamping member. Through the squeezing between the arc-shaped clamping member and the arc-shaped sealing limit part, the sealing body can elastically extend in the axial direction when the thickness decreases, so that the sealing body is always tightly attached to the side wall of the flange.

2. The intelligent krypton-poor xenon product extraction device according to claim 1, characterized in that, One of the sealing bodies has a first annular joint on its sidewall, and the other sealing body has a second annular joint on its sidewall, the first annular joint and the second annular joint being slidably fitted together.

3. The intelligent krypton-poor xenon product extraction device according to claim 1, characterized in that, An annular limiting portion is provided on the end face of each of the two sealing bodies that are far apart from each other.

4. The intelligent krypton-poor xenon product extraction device according to claim 3, characterized in that, The flange surface is provided with an annular groove, and the annular groove and the annular limiting part are configured to cooperate with each other.

5. The intelligent krypton-poor xenon product extraction device according to claim 2, characterized in that, The pressure compensation component includes a working groove formed on the first annular joint, a first slider fixed in the working groove, a second slider fixed on the second annular joint, and a compression spring connecting the first slider and the second slider.

6. The intelligent krypton-poor xenon product extraction device according to claim 1, characterized in that, It also includes a cold gas leak warning component, which is used to warn of low-temperature gas leaks.

7. The intelligent krypton-poor xenon product extraction device according to claim 6, characterized in that, The cold gas leakage early warning component includes a sealing frame fitted onto the flange connection, a through-hole is provided in the sealing frame, and an early warning ejection unit is also provided in the sealing frame. When low-temperature gas leaks, the early warning ejection unit ejects through the through-hole to issue a warning.

8. The intelligent krypton-poor xenon product extraction device according to claim 7, characterized in that, The warning ejection unit includes a liquid storage frame fixed to the inner wall of the sealing frame. A top plate is slidably installed inside the liquid storage frame, dividing the liquid storage frame into a liquid storage area and an ejection area. The end of the liquid storage frame near the through-hole is the ejection area, and the end of the liquid storage frame away from the through-hole is the liquid storage area. The liquid storage area is filled with water. The end of the top plate away from the water is connected to the sealing frame by a compression spring. An ejection block is fixedly installed at the end of the top plate away from the water, and the ejection block is correspondingly set to the through-hole.

9. The intelligent krypton-poor xenon product extraction device according to claim 8, characterized in that, A shielding layer is provided on the penetration opening.

10. The intelligent krypton-poor xenon product extraction device according to claim 8, characterized in that, A sliding sealing strip is provided on the side wall of the top plate, and the sliding sealing strip abuts against the inner wall of the liquid storage frame.

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