Device for rectifying and concentrating krypton xenon at low temperature

Abstract

The utility model discloses a device for low-temperature rectification and concentration of krypton and xenon, and belongs to the technical field of low-temperature rectification. The device for rectifying and concentrating krypton and xenon at low temperature comprises a rectifying tower body and an adsorption structure, a guide pipe is assembled between the rectifying tower body and the adsorption structure, a sampling table is fixedly installed on the outer side of the guide pipe, and the top of the sampling table is rotationally connected with a cover plate by arranging a rotating shaft; a blocking assembly is arranged in the sampling table, the blocking assembly comprises a hydraulic bin, one end of the hydraulic bin is slidably connected with an arc-shaped push rod, and the other end of the hydraulic bin is slidably connected with a clamping rod. According to the device for low-temperature rectification and concentration of krypton and xenon, the sampling table can be opened by rotating the cover plate with the rotating shaft as the axis, and the arc-shaped push rod, the hydraulic bin, the clamping rod, the torsional spring rod, the clamping groove and the arc-shaped sealing plate are matched, so that the sampling table and the guide pipe are separated, and waste of raw materials is reduced under the condition that substances in the guide pipe need to be sampled and detected.

Description

Technical Field

[0001] The utility model relates to the technical field of cryogenic distillation, and particularly relates to a device for cryogenic distillation and concentration of krypton and xenon. Background Art

[0002] The contents of krypton and xenon in the atmosphere are extremely scarce, so it is very difficult to directly extract them from the air. It is a known method in the art to obtain oxygen and nitrogen from an air separation unit. Since the boiling points of krypton, xenon and hydrocarbons are relatively close to the boiling point of liquid oxygen, they are concentrated in liquid oxygen and discharged from the air separation unit to a liquid oxygen storage tank, and the contents of hydrocarbons, krypton and xenon are all less than 100 ppm. Therefore, using liquid oxygen as the raw material to extract krypton and xenon gas has great economic prospects.

[0003] Chinese Patent CN219462585U, authorized and announced on August 4, 2023, discloses a device for cryogenic distillation and concentration of krypton and xenon. Among them, it includes a lean krypton-xenon tower. One side of the lean krypton-xenon tower is connected to an adsorption structure through a conduit, and the adsorption structure is used to adsorb impurities in the liquid oxygen or liquid air entering the lean krypton-xenon tower; a drying structure, and the drying structure is connected to the lean krypton-xenon tower through a discharge pipe. In the above application document, the required substances are introduced into the adsorption structure through a conduit. In the case where the substances in the conduit need to be sampled and detected, after the conduit is opened, the substances being conducted flow out of the conduit, resulting in waste of raw materials. Summary of the Utility Model

[0004] The utility model aims to solve the problem in the prior art that in the case where the substances in the conduit need to be sampled and detected, after the conduit is opened, the substances being conducted flow out of the conduit, resulting in waste of raw materials. For this reason, the utility model provides a device for cryogenic distillation and concentration of krypton and xenon, which can reduce the waste of raw materials in this case.

[0005] A device for cryogenic distillation and concentration of krypton and xenon includes a distillation tower body and an adsorption structure. A conduit is assembled between the distillation tower body and the adsorption structure. A sampling platform is fixedly installed on the outer side of the conduit. The top of the sampling platform is rotatably connected with a cover plate by setting a rotating shaft;

[0006] A blocking component is arranged inside the sampling platform. The blocking component includes a hydraulic chamber. One end of the hydraulic chamber is slidably connected with an arc-shaped push rod. The other end of the hydraulic chamber is slidably connected with a clamping rod. The side of the arc-shaped push rod is fixedly connected with an arc-shaped spring. A torsion spring rod is rotatably connected and penetrates through the inside of the sampling platform. A clamping groove is formed on the outer side of the torsion spring rod. The bottom of the torsion spring rod is fixedly connected with an arc-shaped sealing plate.

[0007] Furthermore, the hydraulic chamber is located at the top position of the sampling platform, and the hydraulic chamber is fixed to the sampling platform.

[0008] Further, the arc-shaped push rod is located at the top of the cover plate, and the arc-shaped push rod is fixed to the cover plate.

[0009] Further, one end of the arc-shaped spring is connected to the arc-shaped push rod, and the other end of the arc-shaped spring is connected to the inner wall of the hydraulic chamber.

[0010] Further, the card slot is located on the side of the card rod, and the cross-sectional shape of the card slot is the same as the cross-sectional shape of the card rod at that position.

[0011] Further, a locking assembly is provided on the top of the sampling table. The locking assembly includes a fixed block. A clamping groove is formed on the side of the rotating shaft. A pull rod is slidably connected to and penetrates through the inside of the fixed block. A clamping rod is connected to the side of the fixed block through a vertical spring.

[0012] Further, the cross-sectional shape of the clamping rod is the same as the cross-sectional shape of the clamping groove.

[0013] Further, the clamping rod is located on the side of the pull rod, and the clamping rod is fixed to the pull rod.

[0014] The difference from the prior art lies in that the beneficial effects of the present application are as follows:

[0015] (1) For the device for cryogenic rectification and concentration of krypton and xenon, with the rotating shaft as the axis, rotating the cover plate can open the sampling table. Cooperating with the arc-shaped push rod, hydraulic chamber, card rod, torsion spring rod, card slot and arc-shaped sealing plate, a barrier can be formed between the sampling table and the conduit, so that when it is necessary to sample and detect the substances in the conduit, the waste of raw materials is reduced.

[0016] (2) For the device for cryogenic rectification and concentration of krypton and xenon, when the rotating shaft rotates, the clamping groove formed on the cover plate rotates synchronously. The clamping groove then rotates to the side position of the clamping rod, so that the clamping rod is no longer restricted. Under the action of the vertical spring, the clamping rod moves into the clamping groove to clamp the rotating shaft, so that it is not necessary to always support the cover plate during sampling, thereby improving the stability during sampling. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The attached drawings forming a part of this utility model are used to provide a further understanding of the utility model. The schematic embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an improper limitation to the utility model.

[0018] Figure 1 It is a three-dimensional structure schematic diagram of the overall appearance of the present utility model;

[0019] Figure 2It is a three-dimensional schematic diagram of the overall sectional view of the present utility model;

[0020] Figure 3 It is a three-dimensional structural schematic diagram of the barrier component of the present utility model;

[0021] Figure 4 For the present utility model Figure 3 The enlarged structural schematic diagram at position A;

[0022] Figure 5 For the present utility model Figure 1 The enlarged structural schematic diagram at position B.

[0023] In the figure:

[0024] 100, rectification tower body; 200, adsorption structure; 300, conduit; 400, sampling platform; 500, rotating shaft; 600, cover plate;

[0025] 700, barrier component; 701, hydraulic chamber; 702, arc-shaped push rod; 703, clamping rod; 704, arc-shaped spring; 705, torsion spring rod; 706, clamping groove; 707, arc-shaped sealing plate;

[0026] 800, locking component; 801, fixing block; 802, clamping groove; 803, pull rod; 804, vertical spring; 805, clamping rod. Specific embodiments

[0027] In order to enable those skilled in the art of this technology to better understand the solution of this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of this application.

[0028] It should be noted that the terms "first", "second", etc. in the specification and claims of this application and the above-mentioned drawings are used to distinguish similar objects, and do not necessarily need to be used to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so as to describe the embodiments of this application here. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device including a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0029] In this application, the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", etc. is based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe this application and its embodiments, and are not used to limit that the indicated device, element, or component must have a specific orientation, or be constructed and operated in a specific orientation.

[0030] Moreover, in addition to being able to represent the orientation or positional relationship, some of the above terms may also be used to represent other meanings. For example, the term "upper" may also be used to represent a certain attachment relationship or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to specific circumstances.

[0031] In addition, the terms "install", "set", "provided with", "connect", "connected", "socketed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or there is internal communication between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0032] It should be noted that, without conflict, the embodiments in this application and the features in the embodiments can be combined with each other. The following will refer to the drawings and combine with the embodiments to detail this application.

[0033] Embodiment 1

[0034] Please refer to Figures 1 - 4 , as shown in the figure, a device for cryogenic rectification and concentration of krypton and xenon includes a rectification tower body 100 and an adsorption structure 200. A conduit 300 is assembled between the rectification tower body 100 and the adsorption structure 200. A sampling platform 400 is fixedly installed on the outer side of the conduit 300. A cover plate 600 is rotatably connected to the top of the sampling platform 400 by arranging a rotating shaft 500;

[0035] Inside the sampling table 400, a barrier assembly 700 is provided. The barrier assembly 700 includes a hydraulic chamber 701, which is located at the top of the sampling table 400 and is fixed to the sampling table 400. One end of the hydraulic chamber 701 is slidably connected to an arc-shaped push rod 702, which is located at the top of the cover plate 600 and is fixed to the cover plate 600. The other end of the hydraulic chamber 701 is slidably connected to a clamping rod 703. When the cover plate 600 fixedly connected thereto is rotated about the rotation shaft 500, the sampling table 400 can be opened. At this time, the rotating cover plate 600 drives the arc-shaped push rod 702 fixedly connected thereto to move. In cooperation with the hydraulic chamber 701 slidably connected to the arc-shaped push rod 702, the pressure in the hydraulic chamber 701 is increased, driving the clamping rod 703 slidably connected to the hydraulic chamber 701 to move. The side of the arc-shaped push rod 702 is fixedly connected to an arc-shaped spring 704. One end of the arc-shaped spring 704 is connected to the arc-shaped push rod 702, and the other end is connected to the inner wall of the hydraulic chamber 701. Inside the sampling table 400, a torsion spring rod 705 is rotatably connected and penetrates through. A card slot 706 is provided on the outer side of the torsion spring rod 705, which is located on the side of the clamping rod 703. The cross-sectional shape of the card slot 706 is the same as the cross-sectional shape of the clamping rod 703 at this position. The bottom of the torsion spring rod 705 is fixedly connected to an arc-shaped sealing plate 707. When the clamping rod 703 is moved out of the card slot 706 provided on the torsion spring rod 705, the torsion spring rod 705 immediately loses its restriction. Under its own action, it drives the arc-shaped sealing plate 707 fixedly connected to the torsion spring rod 705 to rotate, thereby blocking between the sampling table 400 and the conduit 300. Subsequently, sampling can be carried out through the sampling device, reducing the waste of raw materials when it is necessary to sample and detect the substances in the conduit 300; when it is necessary to close the sampling table 400 again, release the cover plate 600, so that the arc-shaped push rod 702 loses its restriction and is reset under the action of the arc-shaped spring 704 fixedly connected thereto. However, at this time, since the clamping rod 703 cannot move into the card slot 706, it is not completely reset. Subsequently, by rotating the torsion spring rod 705 again, the card slot 706 is rotated to the side of the clamping rod 703, thereby achieving complete reset and improving the usability of the device.

[0036] During use, with the rotating shaft 500 as the axis, rotate the cover plate 600 fixedly connected thereto to open the sampling table 400. At this time, the rotating cover plate 600 drives the arc-shaped push rod 702 fixedly connected thereto to move, cooperating with the hydraulic chamber 701 slidably connected to the arc-shaped push rod 702, so that the pressure in the hydraulic chamber 701 increases, driving the latch rod 703 slidably connected to the hydraulic chamber 701 to move, causing the latch rod 703 to move out of the card slot 706 opened on the torsion spring rod 705. The torsion spring rod 705 then loses its restriction and, under its own action, drives the arc-shaped sealing plate 707 fixedly connected to the torsion spring rod 705 to rotate, thereby blocking between the sampling table 400 and the conduit 300. Subsequently, sampling can be performed through the sampling device. When it is necessary to close the sampling table 400 again, release the cover plate 600, so that the arc-shaped push rod 702 loses its restriction and resets under the action of the arc-shaped spring 704 fixedly connected thereto. However, at this time, since the latch rod 703 cannot move into the card slot 706, it is not completely reset. Subsequently, rotate the torsion spring rod 705 to rotate the card slot 706 to the side of the latch rod 703 to complete the reset.

[0037] In order to make the use process of the device more stable, please refer to Figures 1 - 5 , as shown in the figure, a locking assembly 800 is provided on the top of the sampling table 400. The locking assembly 800 includes a fixed block 801, and a clamping groove 802 is opened on the side surface of the rotating shaft 500. When the rotating shaft 500 rotates, the clamping groove 802 opened on the cover plate 600 can be driven to rotate synchronously. A pull rod 803 is slidably connected and penetrates through the inside of the fixed block 801. A clamping rod 805 is connected to the side surface of the fixed block 801 through a vertical spring 804. The cross-sectional shape of the clamping rod 805 is the same as the cross-sectional shape of the clamping groove 802. The clamping rod 805 is located on the side of the pull rod 803, and the clamping rod 805 and the pull rod 803 are in a fixed state. When the clamping groove 802 rotates synchronously to the side of the clamping rod 805, the clamping rod 805 loses its restriction and moves into the clamping groove 802 under the action of the vertical spring 804 fixedly connected thereto to clamp the rotating shaft 500. When it is necessary to rotate the rotating shaft 500, by pulling the pull rod 803, the clamping rod 805 fixedly connected thereto can be driven to move, so that the clamping rod 805 moves out of the clamping groove 802, canceling the restriction on the rotating shaft 500 and the cover plate 600, making it unnecessary to always support the cover plate 600 during sampling, thereby improving the stability during sampling.

[0038] During use, the rotating shaft 500 rotates, synchronously driving the clamping groove 802 formed on the cover plate 600 to rotate synchronously. The clamping groove 802 then rotates to the side position of the clamping rod 805, causing the clamping rod 805 to lose its restraint. Under the action of the vertical spring 804 fixedly connected thereto, the clamping rod 805 moves into the interior of the clamping groove 802 to clamp the rotating shaft 500. When the rotating shaft needs to be rotated, by pulling the pull rod 803, the clamping rod 805 fixedly connected thereto can be driven to move, causing the clamping rod 805 to move out of the clamping groove 802, canceling the restraint on the rotating shaft 500 and the cover plate 600.

[0039] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, making equivalent substitutions or changes, should be covered within the protection scope of the present invention.

Claims

1. A device for concentrating krypton and xenon by low-temperature distillation, comprising a distillation tower body (100) and an adsorption structure (200), wherein a conduit (300) is arranged between the distillation tower body (100) and the adsorption structure (200), a sampling platform (400) is fixedly installed on the outer side of the conduit (300), and a cover plate (600) is rotatably connected to the top of the sampling platform (400) via a rotating shaft (500); Features: The sampling platform (400) is provided with a barrier assembly (700) inside, and the barrier assembly (700) includes a hydraulic chamber (701), one end of the hydraulic chamber (701) is slidably connected to an arc-shaped push rod (702), the other end of the hydraulic chamber (701) is slidably connected to a clamping rod (703), the side of the arc-shaped push rod (702) is fixedly connected to an arc-shaped spring (704), the interior of the sampling platform (400) is rotatably connected and penetrated by a torsion spring rod (705), the outer side of the torsion spring rod (705) is provided with a clamping groove (706), and the bottom of the torsion spring rod (705) is fixedly connected to an arc-shaped sealing plate (707).

2. The device for low-temperature distillation and concentration of krypton and xenon according to claim 1, characterized in that: The hydraulic chamber (701) is located at the top of the sampling platform (400), and the hydraulic chamber (701) and the sampling platform (400) are in a fixed state.

3. The device for low-temperature distillation and concentration of krypton and xenon according to claim 1, characterized in that: The arc-shaped push rod (702) is located at the top of the cover plate (600), and the arc-shaped push rod (702) and the cover plate (600) are in a fixed state.

4. The device for low-temperature distillation and concentration of krypton and xenon according to claim 1, characterized in that: One end of the arc spring (704) is connected to the arc push rod (702), and the other end of the arc spring (704) is connected to the inner wall of the hydraulic chamber (701).

5. The device for low temperature distillation and concentration of krypton and xenon according to claim 1, characterized in that: The clamping slot (706) is located at a side position of the clamping rod (703), and the cross-sectional shape of the clamping slot (706) is the same as the cross-sectional shape of the clamping rod (703) at that position.

6. The device for low-temperature distillation and concentration of krypton and xenon according to claim 1, characterized in that: A locking assembly (800) is provided on the top of the sampling table (400), and the locking assembly (800) includes a fixed block (801). A clamping groove (802) is provided on the side of the rotating shaft (500). The interior of the fixed block (801) is slidably connected and penetrated by a pull rod (803). The side of the fixed block (801) is connected to a clamping rod (805) by means of a vertical spring (804).

7. The device for low-temperature distillation and concentration of krypton and xenon according to claim 6, characterized in that: The cross-sectional shape of the clamping rod (805) is the same as the cross-sectional shape of the clamping groove (802).

8. The device for low temperature distillation and concentration of krypton and xenon according to claim 6, characterized in that: The clamping rod (805) is located at a side position of the pull rod (803), and the clamping rod (805) and the pull rod (803) are in a fixed state.

Images