Device for prolonging service life of beryllium window based on hot gas flow of vortex tube

Abstract

This utility model discloses a device for extending the service life of a beryllium window based on vortex tube hot airflow. It is characterized by comprising a vortex tube, an annular air box, and a connecting and fixing kit. The annular air box has a ring-shaped structure with multiple dry hot airflow ejection nozzles distributed on the side facing the beryllium window. The annular air box is mounted and fixed to the beryllium window flange at the end of the cable bundle via the connecting and fixing kit. The hot airflow outlet of the vortex tube is connected to the air inlet of the annular air box to receive the hot airflow input from the vortex tube. The dry hot airflow ejection nozzles of the vortex tube are aligned with the oxygen-free copper area of ​​the beryllium window flange to continuously blow dry hot air onto the oxygen-free copper surface, forming an air curtain and reducing the adsorption of moisture in the air. The connecting and fixing kit has a through hole for the cable bundle to pass through. This device slows down the oxidation and corrosion process of the beryllium window, significantly extending its service life.

Description

Technical Field

[0001] This utility model belongs to the field of vacuum equipment protection technology, and relates to a device for extending the service life of the beryllium window at the end of a synchrotron radiation beamline, which can delay the oxidation damage of the beryllium window at the end of a synchrotron radiation beamline. Background Technology

[0002] Metallic beryllium (Be) exhibits extremely low absorption and high transmittance of X-rays, making it a crucial window material in synchrotron radiation beamlines for isolating the vacuum tube from the atmospheric environment. A typical beryllium window is constructed by welding a thin beryllium sheet to an oxygen-free copper (OFC) ring, which is then encapsulated on a flange. Its fabrication process is complex, and the materials are expensive, making it an essential vacuum component in the beamline.

[0003] The beryllium window at the vacuum end of the beamline is sealed with a vacuum on one side and the atmosphere on the other. The main challenges it faces during operation lie in the atmospheric working environment and the X-ray photothermal reaction. Moisture and oxygen in the environment can corrode the oxygen-free copper portion of the beryllium window and the weld seams, potentially leading to oxidation and stress corrosion cracking. Simultaneously, under prolonged irradiation with high-intensity hard X-rays, the surface of the beryllium sheet is prone to oxidation in a humid environment, easily causing small holes to be ablated, ultimately leading to vacuum leakage.

[0004] Beryllium window devices are exposed to the atmosphere for extended periods, and their metal components (especially oxygen-free copper) are susceptible to oxidation due to ambient humidity. Furthermore, the beryllium plates are at higher risk of damage in humid environments and under high-light-flux irradiation. These issues collectively affect the long-term reliability and service life of beryllium windows. Utility Model Content

[0005] To address the problems existing in the prior art, the purpose of this utility model is to provide a device for extending the service life of the beryllium window at the end of a synchrotron radiation beamline. The device utilizes a vortex tube to generate dry hot air to provide a local dry hot atmosphere for the atmospheric end of the vacuum-sealed beryllium window, preventing moisture and impurities in the air from being adsorbed on the surface of the beryllium window and causing oxidation, thereby slowing down the oxidation and corrosion process and extending its service life.

[0006] The technical solution of this utility model is as follows:

[0007] A device for extending the service life of a beryllium window based on vortex tube hot airflow is characterized by comprising a vortex tube, an annular wind box, and a connecting and fixing kit; the annular wind box has an annular structure and multiple dry hot airflow ejection nozzles distributed on the side facing the beryllium window; wherein,

[0008] The annular bellows is mounted and fixed to the beryllium window flange at the end of the cable bundle via the connecting and fixing kit;

[0009] The hot air outlet of the vortex tube is connected to the air inlet of the annular air box to receive the hot air input from the vortex tube.

[0010] The dry hot air jet nozzle of the vortex tube is aimed at the oxygen-free copper area of ​​the beryllium window flange to continuously blow dry hot air onto the oxygen-free copper surface, forming an air curtain and reducing the adsorption of air moisture.

[0011] The connecting and fixing kit has a through hole for the wires to pass through.

[0012] Preferably, the connecting and fixing kit is an annular groove for accommodating the annular air box; a through hole is provided in the middle of the bottom of the annular groove for the passage of the wire.

[0013] Preferably, the side wall of the annular groove is provided with a fixing screw hole for connecting and fixing the connecting and fixing kit to the beryllium window flange by passing a screw through the fixing screw hole.

[0014] Preferably, the sidewall of the annular groove is provided with a notch for accommodating the connecting pipe between the hot air outlet of the vortex tube and the air inlet of the annular wind box.

[0015] Preferably, the air inlet of the annular air box is connected to the hot air outlet of the vortex tube through a heat-resistant pipe.

[0016] Preferably, the annular wind box has a plurality of dry hot gas outlet nozzles evenly distributed on the side facing the beryllium window.

[0017] Preferably, the vortex tube inlet is connected to an air source to receive compressed air input from the air source and separate it into two airflows, cold and hot, inside the vortex tube.

[0018] This device uses a vortex tube as its core component to provide a dry, hot air source for beryllium window protection; it employs an annular air box as a dry, hot air distribution and injection device, and its specific structure ensures that the airflow can uniformly cover the area of ​​the beryllium window that needs protection.

[0019] This device combines a vortex tube and an annular bellows to form a complete system that actively provides a localized dry and protective atmosphere for the beryllium window.

[0020] The advantages of this utility model are as follows:

[0021] 1. Active protection: By actively providing and maintaining a dry gas environment, it directly and effectively blocks moisture and has a significant anti-oxidation effect.

[0022] 2. Reliable operation: The vortex tube has no moving parts, has a robust structure, and is easy to maintain, making it very suitable for synchrotron radiation devices that require long-term uninterrupted operation.

[0023] 3. Economical and practical: The system has a simple structure, mainly uses compressed air, has low operating costs, and is easy to implement and control. Attached Figure Description

[0024] Figure 1 This is a series of diagrams of this device.

[0025] Reference numerals: 1-Vortex tube inlet, 2-Vortex tube hot air outlet, 3-Annular bellows, 4-Annular bellows inlet, 5-Dry hot air outlet nozzle, 6-Connecting and fixing kit, 7-Fixing screw hole, 8-Beryllium window flange, 9-Oxygen-free copper block, 10-Beryllium plate. Detailed Implementation

[0026] The present invention will now be described in further detail with reference to the accompanying drawings. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0027] The core technical solution of this utility model is to construct an active air supply device to continuously and evenly blow dry hot air onto the surface of the key metal components of the beryllium window, forming an air curtain, thereby creating a local low-humidity protective environment and reducing the adsorption of air moisture.

[0028] System composition and connections:

[0029] The entire system mainly consists of vortex tubes and annular bellows.

[0030] • Vortex tube: Its air inlet is connected to a clean air source via a pipe. Compressed air is separated into two streams, cold and hot, inside the vortex tube.

[0031] ● Annular air box: Its air inlet is connected to the hot air outlet of the vortex tube through a heat-resistant pipe. The annular air box is designed as a ring structure that can be arranged around the beryllium window flange, and its inner side (the side facing the beryllium window) has a number of tiny holes evenly distributed.

[0032] ●The annular bellows is fixedly installed on the beryllium window flange, with its micro-holes aligned with the oxygen-free copper area of ​​the beryllium window.

[0033] Working principle:

[0034] Clean compressed air, filtered through multiple layers, is supplied by an air compressor and introduced into the vortex tube via an air pipe. Inside the vortex tube, the compressed air rotates at high speed, resulting in the separation of cold and hot air, which exit from opposite ends. The dry, hot air stream flows out from the "hot end" outlet of the vortex tube, with the outlet temperature controlled to approximately 50°C (the ambient temperature in the Beijing Synchrotron Radiation Experiment Hall is maintained at 25°C). This dry, hot air stream is guided to an annular bellows through a short delivery pipe. After being depressurized within the bellows, the airflow is stably ejected from multiple annularly distributed micro-holes, directly purging and covering the oxygen-free copper block of the beryllium window. This continuous airflow provides heat, preventing moisture condensation; simultaneously, it creates a positive-pressure, low-humidity localized environment, effectively preventing humid air from the external environment from contacting the beryllium window surface, thus inhibiting oxidation and chemical corrosion.

[0035] Although specific embodiments of the present invention have been disclosed for illustrative purposes to aid in understanding and implementing the invention, those skilled in the art will understand that various substitutions, variations, and modifications are possible without departing from the spirit and scope of the invention and the appended claims. Therefore, the invention should not be limited to the content disclosed in the preferred embodiments, and the scope of protection claimed by the invention is defined by the claims.

Claims

1. A device for prolonging the service life of a beryllium window based on the hot gas flow of a vortex tube, characterized by, It includes a vortex tube, an annular wind box, and a connecting and fixing kit; the annular wind box has an annular structure and multiple dry hot gas ejection nozzles distributed on the side facing the beryllium window; wherein, The annular bellows is mounted and fixed to the beryllium window flange at the end of the cable bundle via the connecting and fixing kit; The hot air outlet of the vortex tube is connected to the air inlet of the annular air box to receive the hot air input from the vortex tube. The dry hot air jet nozzle of the vortex tube is aimed at the oxygen-free copper area of ​​the beryllium window flange to continuously blow dry hot air onto the oxygen-free copper surface, forming an air curtain and reducing the adsorption of air moisture. The connecting and fixing kit has a through hole for the wires to pass through.

2. The device for prolonging the service life of a beryllium window based on the heat flow of a vortex tube according to claim 1, characterized in that, The connecting and fixing kit is an annular groove for accommodating the annular air box; a through hole is provided in the middle of the bottom of the annular groove for the wire to pass through.

3. The device for prolonging the service life of a beryllium window based on the heat flow of a vortex tube according to claim 2, characterized in that, The annular groove has a fixing screw hole on its side wall, which is used to connect and fix the connecting and fixing kit to the beryllium window flange by passing a screw through the fixing screw hole.

4. The device for prolonging the service life of a beryllium window based on the heat flow of a vortex tube according to claim 2, characterized in that, The annular groove has a notch on its side wall to accommodate the connecting pipe between the hot air outlet of the vortex tube and the air inlet of the annular wind box.

5. The device for prolonging the service life of beryllium window based on the heat flow of vortex tube according to claim 1 or 2 or 3, characterized in that, The air inlet of the annular air box is connected to the hot air outlet of the vortex tube through a heat-resistant pipe.

6. The device for prolonging the service life of beryllium window based on the heat flow of vortex tube according to claim 1 or 2 or 3, characterized in that, The annular wind box has multiple dry hot gas ejector nozzles evenly distributed on the side facing the beryllium window.

7. The device for prolonging the service life of beryllium window based on the heat flow of vortex tube according to claim 1 or 2 or 3, characterized in that, The vortex tube inlet is connected to the air source to receive compressed air input from the air source and separate it into two airflows, cold and hot, inside the vortex tube.

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