High-temperature-resistant solid particle collector

Abstract

The invention discloses a high-temperature-resistant solid particle collector. The solid particle collector is made of a high-temperature-resistant glass material. The solid particle collector comprises a first flow channel, a second flow channel, a third flow channel, a fourth flow channel and a fifth flow channel. The solid particle collector disclosed by the invention is made of high-temperature-resistant glass materials such as high borosilicate glass, can continuously work in a high-temperature environment of less than 1000 DEG C, and can efficiently filter solid particles, especially particles with the particle size of 0.1 mm or above, in buffer gas through a unique quintuple filtering structure, and the removal rate can reach 99%. During installation, the device is arranged on a gas pipeline between vacuum filling equipment and the rubidium bubble by utilizing a sintering process, so that leakage points are prevented from being introduced, and the vacuum degree of a system is ensured to meet the filling requirement of the rubidium bubble for a long time.

Description

Technical Field

[0001] The present invention relates to the technical field of gas filtration, and in particular to a high-temperature resistant solid particle collector. Background Art

[0002] The contents in this section merely provide background information related to the present disclosure and may not constitute prior art.

[0003] Rubidium clocks, as high-precision time and frequency standards based on the energy level transitions of the rubidium atom, play a key role in satellite navigation, communication networks, and national defense. The rubidium bulb, the core component of the rubidium clock's physical structure, has a direct impact on its timing accuracy and stability.

[0004] However, during the existing vacuum filling process of rubidium bubbles, there is a widespread problem of fine solid particles ranging in size from approximately 0.1mm to 1mm entering the bubble. These solid particles primarily originate from particles that fall off from aging vacuum filling equipment pipes or from glass fragments generated during operation (for example, when the operator opens the vacuum filling equipment's blowpipe). These solid particles, mixed with the buffer gas filling the bubble, disrupt the uniformity of the material distribution within the bubble, leading to unstable product performance and reduced yield. Summary of the Invention

[0005] The inventors of this application discovered that, although there is a risk of solid particles entering the rubidium bulb in the prior art, the vacuum filling equipment used in the rubidium clock manufacturing industry is generally not equipped with a dedicated particle filtering device. The main reasons are: 1) Traditional filtering devices are difficult to withstand high-temperature environments (such as the high-temperature baking process during the inflation process), and their materials are prone to structural deformation or failure, and even damage to the equipment; 2) Traditional filtering devices cannot meet high vacuum sealing requirements, and their installation may introduce leakage points, resulting in a decrease in the system vacuum degree, which in turn affects the quality of the rubidium bubble filling.

[0006] In view of this, the purpose of the present invention is to provide a high-temperature resistant solid particle collector to at least overcome the technical problem in the prior art that there is no high-temperature resistant, highly sealed filtering device suitable for use between vacuum filling equipment and rubidium bulbs.

[0007] The purpose of the present invention is achieved through the following technical solutions:

[0008] The present invention discloses a high-temperature resistant solid particle collector, wherein the solid particle collector is made of high-temperature resistant glass material;

[0009] The solid particle collector includes a first flow channel, a second flow channel, a third flow channel, a fourth flow channel and a fifth flow channel;

[0010] The first flow channel, the second flow channel and the third flow channel all extend in a vertical direction, and the top and bottom ends of the first flow channel, the second flow channel and the third flow channel are all closed structures;

[0011] The second flow channel is provided inside the first flow channel and close to the bottom end of the first flow channel, and the third flow channel is provided inside the first flow channel and close to the top end of the first flow channel;

[0012] The fourth flow channel has a first inlet and outlet at its bottom end, a closed top end, and sequentially passes through the bottom ends of the first and second flow channels before extending into the second flow channel; the fifth flow channel has a second inlet and outlet at its top end, a closed bottom end, and sequentially passes through the top ends of the first and third flow channels before extending into the third flow channel;

[0013] The portion of the fourth flow channel located inside the second flow channel is provided with a first air guide port for connecting the fourth flow channel and the second flow channel, and the second flow channel is provided with a second air guide port for connecting the second flow channel and the first flow channel; the first air guide port and the second air guide port are staggered so that the first air guide port faces the inner wall of the second flow channel, and the second air guide port faces the inner wall of the first flow channel;

[0014] Among them, the third flow channel is provided with a third air guide port for connecting the third flow channel and the first flow channel, and the part of the fifth flow channel located inside the third flow channel is provided with a fourth air guide port for connecting the fifth flow channel and the third flow channel; the third air guide port and the fourth air guide port are staggered so that the third air guide port faces the outer wall of the fifth flow channel, and the fourth air guide port faces the inner wall of the third flow channel.

[0015] Optionally, the first flow channel, the second flow channel, the third flow channel, the fourth flow channel and the fifth flow channel are coaxially arranged.

[0016] Optionally, the first air guide port and the second air guide port, and the third air guide port and the fourth air guide port are arranged at intervals of 180° along the circumferential direction of the first flow channel;

[0017] Furthermore, the first air guide port is closer to the bottom end of the first flow channel than the second air guide port, and the fourth air guide port is closer to the top end of the first flow channel than the third air guide port.

[0018] Optionally, the bottom outer wall of the second flow channel and the bottom inner wall of the first flow channel, and the top outer wall of the third flow channel and the top inner wall of the first flow channel are all integrated structures;

[0019] The connection between the fourth flow channel and the first flow channel, the connection between the fourth flow channel and the second flow channel, the connection between the fifth flow channel and the first flow channel, and the connection between the fifth flow channel and the third flow channel are all sintered and connected.

[0020] Optionally, the top and bottom ends of the first flow channel, the second flow channel, and the third flow channel are all in an arc-shaped structure;

[0021] The top end of the fourth flow channel and the bottom end of the fifth flow channel are both arc-shaped structures.

[0022] Optionally, the second flow channel and the third flow channel have the same structure, and the fourth flow channel and the fifth flow channel have the same structure.

[0023] Optionally, the diameter of the first flow channel is 30±1mm and the length is 110±1mm; the diameter of the second flow channel and the third flow channel is 16±1mm and the length is 35±1mm; the diameter of the fourth flow channel and the fifth flow channel is 7±1mm and the length is 30±1mm.

[0024] Optionally, the high temperature resistant glass material is high borosilicate glass.

[0025] Optionally, the first air guide port, the second air guide port, the third air guide port and the fourth air guide port are all circular holes processed on the corresponding flow channel and extending radially.

[0026] Optionally, the diameters of the first air guide port, the second air guide port, the third air guide port and the fourth air guide port are the same;

[0027] In addition, the diameter of each air guide hole satisfies:

[0028]

[0029] In the above formula, d is the diameter of the gas guide port; Q is the flow rate of the gas passing through the gas guide port; ΔP is the pressure difference on both sides of the gas guide port; R is the gas constant; T is the absolute temperature of the gas; and M is the molar mass of the gas.

[0030] The technical solutions of the embodiments of the present invention have at least the following advantages and beneficial effects:

[0031] 1. The solid particle collector disclosed in the present invention is made of high-temperature resistant glass materials such as high borosilicate glass. It can operate continuously in high-temperature environments below 1000°C. Through its unique five-layer filtering structure, it can efficiently filter solid particles in the buffer gas, especially particles with a particle size of 0.1mm or larger, with a removal rate of up to 99%. During installation, it is arranged in the gas pipeline between the vacuum filling equipment and the rubidium bubble using a sintering process to avoid the introduction of leak points and ensure that the system vacuum level meets the rubidium bubble filling requirements for a long time. In addition, the collector can not only filter solid particles when the rubidium bubble is inflated, but also play the same role during the rubidium bubble pumping operation, which is multifunctional. Its easy-to-integrate design also reduces installation cost and complexity, effectively solving the problem of traditional filtering devices in the prior art that are difficult to withstand high temperatures and are prone to introducing leak points. It significantly improves the gas purity and system reliability during the rubidium bubble filling process, and has important application value and promotion significance for the rubidium clock manufacturing industry.

[0032] 2. The solid particle collector disclosed in the present invention has a filtering principle that is completely based on a purely physical mechanism and does not rely on any additional filtering measures, such as filter screens, filter elements, or other chemical filter materials. This purely physical filtering method achieves efficient separation of solid particles through a carefully designed flow channel structure and gas flow path, utilizing the inertial collision and gravity sedimentation of solid particles during the gas flow process. This design not only avoids the problems of blockage, increased pressure drop, and increased maintenance costs that may be caused by the use of filter screens, but also has the ability to prevent airflow disturbances, ensuring the stability and reliability of the filtration process, and can operate stably for a long time even under high temperature and high vacuum conditions. In addition, since no additional filtering materials are required, the collector has lower operating costs and is easier to maintain, further enhancing the application value and economy of the collector. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 A schematic diagram of the structure of a vacuum filling device known in the prior art and a gas pipeline between the vacuum filling device and the rubidium bubble;

[0034] Figure 2 A schematic structural diagram of a high-temperature resistant solid particle collector provided by an embodiment of the present invention;

[0035] Figure 3 For the general Figure 2 The diagram shows a schematic diagram of the structure of a high-temperature resistant solid particle collector arranged on a gas pipeline between a vacuum filling device and a rubidium bubble.

[0036] Icons: 100-vacuum filling equipment, 200-glass pipe, 201-first pair of interfaces, 202-second pair of interfaces, 300-glass bracket, 10-first flow channel, 20-second flow channel, 30-third flow channel, 40-fourth flow channel, 50-fifth flow channel, 11-first inlet and outlet, 12-second inlet and outlet, 21-first air guide port, 22-second air guide port, 23-third air guide port, 24-fourth air guide port, 31-first collection area, 32-second collection area, 33-third collection area, 34-fourth collection area. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with specific implementation methods. The same figure marks in the accompanying drawings represent the same components. It should be noted that the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] Compared to the embodiments shown in the drawings, feasible embodiments within the scope of protection of the present invention may have fewer components, additional components not shown in the drawings, different components, differently arranged components, or differently connected components, etc. In addition, two or more components in the drawings may be implemented in a single component, or a single component shown in the drawings may be implemented as multiple separate components.

[0039] Example 1

[0040] like Figure 1 FIG. 1 shows a vacuum filling apparatus 100 known in the prior art, and a schematic diagram of the gas pipeline connection between the vacuum filling apparatus 100 and a rubidium bulb (not shown). The output end of the vacuum filling apparatus 100 is connected to a glass support 300 via a vertically extending glass pipe 200, and the rubidium bulb is in communication with the glass support 300. During the rubidium bubble filling process, the buffer gas to be filled into the rubidium bulb flows from the output end of the vacuum filling apparatus 100 through the glass pipe 200 and the glass support 300, and then enters the interior of the rubidium bulb. The buffer gas can be, but is not limited to, nitrogen.

[0041] On this basis, the inventors of the present application discovered that, during the rubidium bubble filling process, the glass tube 200, the glass bracket 300 and the rubidium bubble may be in a high-temperature environment. For example, the temperature in the high-temperature baking process may reach about 400°C. However, traditional filtering devices are difficult to withstand high-temperature environments. In addition, traditional filtering devices cannot meet high vacuum sealing requirements. After installation, leakage points may be introduced, resulting in a decrease in the system vacuum degree. Therefore, the vacuum filling equipment 100 used in the rubidium clock manufacturing industry is generally not equipped with a dedicated particle filtering device.

[0042] To this end, Example 1 of the present invention discloses a high-temperature-resistant solid particle collector. This collector can be installed in the gas pipeline between the vacuum filling device 100 and the rubidium bubble and serve as a filter to prevent solid particles in the buffer gas to be filled into the rubidium bubble from entering the bubble. Furthermore, the collector can operate continuously in high-temperature environments below 1000°C and does not introduce leaks in the gas pipeline between the vacuum filling device 100 and the rubidium bubble, ensuring that the vacuum level of the entire system meets the filling requirements during the rubidium bubble filling process.

[0043] For the sake of convenience, the high temperature resistant solid particle collector disclosed in Example 1 of the present invention is referred to as the “collector” below.

[0044] Figure 2 This is a schematic diagram of the structure of an exemplary collector disclosed in an embodiment of the present invention. Figure 2 In the embodiment shown, the entire collector can be made of high-temperature resistant glass material, such as high borosilicate glass, so that it can continue to work in a high-temperature environment of less than 1000°C, thereby meeting the temperature requirements of each link during the rubidium bubble filling process.

[0045] Furthermore, the collector may include a first flow channel 10 , a second flow channel 20 , a third flow channel 30 , a fourth flow channel 40 and a fifth flow channel 50 .

[0046] The first flow channel 10, the second flow channel 20, and the third flow channel 30 all extend in a vertical direction, and the top and bottom ends of the first flow channel 10, the second flow channel 20, and the third flow channel 30 are all closed structures. The second flow channel 20 is located inside the first flow channel 10 and near the bottom end of the first flow channel 10, and the third flow channel 30 is located inside the first flow channel 10 and near the top end of the first flow channel 10. The bottom end of the fourth flow channel 40 is provided with a first inlet and outlet 11. The top end of the fourth flow channel 40 is a closed structure and sequentially passes through the bottom ends of the first flow channel 10 and the second flow channel 20 before extending into the second flow channel 20. The top end of the fifth flow channel 50 is provided with a second inlet and outlet 12. The bottom end of the fifth flow channel 50 is a closed structure and sequentially passes through the top ends of the first flow channel 10 and the third flow channel 30 before extending into the third flow channel 30.

[0047] Among them, the part of the fourth flow channel 40 located inside the second flow channel 20 is provided with a first air port 21 for connecting the fourth flow channel 40 and the second flow channel 20, and the second flow channel 20 is provided with a second air port 22 for connecting the second flow channel 20 and the first flow channel 10. The first air port 21 and the second air port 22 are staggered, that is, the first air port 21 is not aligned with the second air port 22, so that the first air port 21 faces the inner wall of the second flow channel 20, and the second air port 22 faces the inner wall of the first flow channel 10.

[0048] Correspondingly, the third flow channel 30 is provided with a third air port 23 for connecting the third flow channel 30 and the first flow channel 10, and the part of the fifth flow channel 50 located inside the third flow channel 30 is provided with a fourth air port 24 for connecting the fifth flow channel 50 and the third flow channel 30. The third air port 23 and the fourth air port 24 are staggered, that is, the third air port 23 is not aligned with the fourth air port 24, so that the third air port 23 faces the outer wall of the fifth flow channel 50, and the fourth air port 24 faces the inner wall of the third flow channel 30.

[0049] Based on the above configuration, a collector with five-fold filtering capability is formed, and the collector includes multiple collecting areas for collecting solid particles. Specifically, Figure 2 As shown, the area inside the bottom end of the second flow channel 20 can be used as the first collection area 31, the area inside the bottom end of the first flow channel 10 can be used as the second collection area 32, the area inside the bottom end of the third flow channel 30 can be used as the third collection area 33, and the area inside the bottom end of the fifth flow channel 50 can be used as the fourth collection area 34.

[0050] When the collector is actually used, the collector can be arranged on the glass pipe 200 led out from the output end of the vacuum filling device 100. Figure 3The content shown is specifically arranged as follows: first, according to the length of the collector, that is, the distance from the first inlet and outlet 11 on the fourth flow channel 40 to the second inlet and outlet 12 on the fifth flow channel 50, the vertical part of the glass tube 200 led out from the output end of the vacuum filling equipment 100 is removed by an equal length to form an accommodating space on the glass tube 200 including a first docking port 201 at the lower end and a second docking port 202 at the upper end; then, the entire collector is placed in the accommodating space, and the first inlet and outlet 11 on the fourth flow channel 40 is aligned and connected to the first docking port 201, and the second inlet and outlet 12 on the fifth flow channel 50 is aligned and connected to the second docking port 202; finally, a sintering process is used to sinter and connect the fourth flow channel 40 at the first inlet and outlet 11 with the glass tube 200 at the first docking port 201, and the fifth flow channel 50 at the second inlet and outlet 12 with the glass tube 200 at the second docking port 202. At this point, the purpose of arranging the entire collector on the glass pipe 200 led out from the vacuum filling device 100 is achieved. This method will not cause too much impact on the gas pipeline between the entire vacuum filling device 100 and the rubidium bubble, that is, there is no need to rearrange the gas pipeline between the vacuum filling device 100 and the rubidium bubble. In addition, by adopting the sintering process, no leakage points are introduced during the introduction of the collector. It can ensure that a reliable sealing structure is formed between the first inlet and outlet 11 and the first docking port 201, and between the second inlet and outlet 12 and the second docking port 202, thereby ensuring that the vacuum degree of the entire system meets the subsequent rubidium bubble filling requirements, for example, the vacuum degree of the entire system can be maintained at 1×10 -5 pa.

[0051] Furthermore, when the buffer gas is filled into the rubidium bubble, if the buffer gas carries solid particles, the solid particles that may exist in the buffer gas can be reliably filtered out by using a collector. Figure 2As shown by the arrow in the figure, it shows the direction in which the buffer gas flows in the collector when the buffer gas is filled into the rubidium bubble. The process of filtering solid particles in the buffer gas using the collector is as follows: when the buffer gas enters the fourth flow channel 40 through the first docking port 201 on the glass pipe 200 connected to the output end of the vacuum filling device 100, since the buffer gas provided by the vacuum filling device 100 has a certain pressure, the buffer gas entering the fourth flow channel 40 will first impact the top of the closed structure of the fourth flow channel 40. At this time, the fourth flow channel 40 can intercept some solid particles in the buffer gas, thereby filtering the buffer gas once. ; Then, the buffer gas will enter the second flow channel 20 through the first air guide port 21 on the fourth flow channel 40. Since the first air guide port 21 faces the inner wall of the second flow channel 20, the buffer gas will first impact the inner wall of the second flow channel 20. During this process, some solid particles in the buffer gas will slow down and settle in the first collection area 31 at the bottom of the second flow channel 20, thereby playing a role in secondary filtration of the buffer gas; Then, the buffer gas enters the first flow channel 10 through the second air guide port 22 on the second flow channel 20. Similarly, since the second air guide port 22 faces the inner wall of the first flow channel 10, the buffer gas will first impact the inner wall of the first flow channel 10. During this process , some solid particles in the buffer gas will be decelerated and settled in the second collecting area 32 at the bottom of the first flow channel 10, thereby playing the role of three-times filtering of the buffer gas; then, the buffer gas flows upward in the vertical direction and enters the third flow channel 30 from the third air guide port 23 on the third flow channel 30. Similarly, since the third air guide port 23 faces the outer wall of the fifth flow channel 50, the buffer gas will first impact the outer wall of the fifth flow channel 50. In this process, some solid particles in the buffer gas will be decelerated and settled in the third collecting area 33 at the bottom of the third flow channel 30, thereby playing the role of four-times filtering of the buffer gas; then, the buffer gas passes through the fifth flow channel 50 The fourth air inlet 24 on the fifth flow channel 50 enters the fifth flow channel 50. Since the fourth air inlet 24 faces the inner wall of the third flow channel 30, the buffer gas will first impact the inner wall of the fifth flow channel 50. During this process, some solid particles in the buffer gas will be decelerated and settled in the fourth collecting area 34 at the bottom of the fifth flow channel 50, thereby filtering the buffer gas five times; finally, the buffer gas filtered five times flows out through the second inlet and outlet 12 on the fifth flow channel 50, and the outflowing buffer gas can enter the remaining glass tubes 200 from the second docking port 202, and finally flow through the remaining glass tubes 200 and the glass bracket 300 in turn and reach the inside of the rubidium bulb.At this point, the purpose of filtering solid particles in the buffer gas during the process of filling the rubidium bubble with buffer gas is achieved. Since the collector disclosed in the embodiment of the present invention has five-fold filtering capabilities, the filtering effect when filtering solid particles is good. The inventor of the present invention has actually verified that the removal rate of using this collector to filter solid particles in the buffer gas, especially solid particles with a particle size of 0.1 mm or more, can reach 99%.

[0052] It is also worth noting that the collector disclosed in the embodiments of the present invention can not only filter solid particles during the inflation of the rubidium bubble, but also filter solid particles in the gas extracted from the rubidium bubble during the evacuation of the bubble (i.e., when solid particles exist in the rubidium bubble and need to be extracted). The entire filtration process is roughly the same as the filtration process during inflation, and will not be described in detail here.

[0053] It can be seen that the collector disclosed in the embodiment of the present invention is made of high-temperature resistant glass materials such as high borosilicate glass, and can continue to work in a high-temperature environment of less than 1000°C. Through its unique five-layer filtering structure, it can efficiently filter solid particles in the buffer gas, especially particles with a particle size of 0.1mm or more, with a removal rate of up to 99%. During installation, it is arranged on the gas pipeline between the vacuum filling equipment 100 and the rubidium bubble using a sintering process to avoid the introduction of leakage points and ensure that the system vacuum degree meets the filling requirements of the rubidium bubble for a long time. In addition, the collector can not only filter solid particles when the rubidium bubble is inflated, but also play the same role when the rubidium bubble is evacuated, and is multifunctional. Its easy-to-integrate design also reduces installation costs and complexity, effectively solving the problem that traditional filtering devices in the prior art are difficult to withstand high temperatures and are prone to introducing leakage points, significantly improving the purity of the gas and the reliability of the system during the rubidium bubble filling process, and has important application value and promotion significance for the rubidium clock manufacturing industry.

[0054] At the same time, the filtration principle of the collector disclosed in the embodiment of the present invention is completely based on a pure physical mechanism and does not rely on any additional filtration measures, such as filter screens, filter elements or other chemical filter materials. This purely physical filtration method uses a carefully designed flow channel structure and gas flow path, and utilizes the inertial collision and gravity sedimentation of solid particles during the gas flow process to achieve efficient separation of solid particles. This design not only avoids the problems of blockage, increased pressure drop and increased maintenance costs that may be caused by the use of filter screens, but also has the ability to prevent airflow disturbances, ensuring the stability and reliability of the filtration process, and can operate stably for a long time even under high temperature and high vacuum conditions. In addition, since no additional filter materials are required, the operating cost of the collector is lower and maintenance is simpler, further enhancing the application value and economy of the collector.

[0055] In some embodiments, continue to refer to Figure 2 As shown, the first flow channel 10, the second flow channel 20, the third flow channel 30, the fourth flow channel 40 and the fifth flow channel 50 are coaxially arranged to optimize the structural design of the entire collector as much as possible.

[0056] Furthermore, the first air guide port 21 on the fourth flow channel 40 and the second air guide port 22 on the second flow channel 20, and the third air guide port 23 on the third flow channel 30 and the fourth air guide port 24 on the fifth flow channel 50 are all arranged at intervals of 180° along the circumference of the first flow channel 10, that is, in Figure 2 From the perspective shown, the first air inlet 21 is opened on the right side of the fourth flow channel 40, the second air inlet 22 is opened on the left side of the second flow channel 20, and accordingly, the third air inlet 23 is opened on the right side of the third flow channel 30, and the fourth air inlet 24 is opened on the left side of the fifth flow channel 50.

[0057] Moreover, the first air port 21 is closer to the bottom end of the first flow channel 10 than the second air port 22, and the fourth air port 24 is closer to the top end of the first flow channel 10 than the third air port 23. That is, the distance from the first air port 21 to the bottom end of the first flow channel 10 is smaller than the distance from the second air port 22 to the bottom end of the first flow channel 10, and the distance from the fourth air port 24 to the top end of the first flow channel 10 is smaller than the distance from the third air port 23 to the top end of the first flow channel 10.

[0058] Such a design is conducive to extending the flow time of the buffer gas flowing between the first air guide port 21 and the second air guide port 22 and between the third air guide port 23 and the fourth air guide port 24, thereby further improving the filtering effect of solid particles.

[0059] Furthermore, the second air guide port 22 and the third air guide port 23 may also be a structure distributed on both sides of the axis of the first flow channel 10 with the axis of the first flow channel 10 as the center, that is, Figure 2 From the perspective shown, the second air guide port 22 is located on the left side of the second flow channel 20, and the third air guide port 23 is located on the right side of the third flow channel 30. This design effectively prolongs the time that the gas between the second air guide port 22 and the third air guide port 23 flows in the first flow channel 10, thereby improving the filtering effect.

[0060] In some embodiments, the bottom outer wall of the second flow channel 20 and the bottom inner wall of the first flow channel 10, as well as the top outer wall of the third flow channel 30 and the top inner wall of the first flow channel 10, are all integral structures. For example, the bottom outer wall of the second flow channel 20 and the bottom inner wall of the first flow channel 10, as well as the top outer wall of the third flow channel 30 and the top inner wall of the first flow channel 10, can all be sintered together using a sintering process. Furthermore, the connection between the fourth flow channel 40 and the first flow channel 10, the connection between the fourth flow channel 40 and the second flow channel 20, the connection between the fifth flow channel 50 and the first flow channel 10, and the connection between the fifth flow channel 50 and the third flow channel 30 can all be sintered together using a sintering process.

[0061] Such a design can simplify the manufacturing process of the entire collector while ensuring reliable sealing of the flow channel connections and avoiding leakage at the flow channel connections.

[0062] In some embodiments, continue to refer to Figure 2 As shown, the top and bottom ends of the first flow channel 10 , the second flow channel 20 , and the third flow channel 30 are all arc-shaped structures, and the top end of the fourth flow channel 40 and the bottom end of the fifth flow channel 50 are also arc-shaped structures.

[0063] This design effectively reduces resistance to fluid flow and mitigates eddies and turbulence caused by sharp corners. Furthermore, the curved structure increases the surface area of the flow channel, prolonging the contact time between the gas and the inner wall, improving the settling efficiency of solid particles and thus enhancing filtration effectiveness. Furthermore, the curved structure disperses stress, avoiding stress concentration and enhancing the durability and reliability of the device in harsh environments such as high temperatures.

[0064] In some embodiments, the second flow channel 20 and the third flow channel 30 have the same structure, and the fourth flow channel 40 and the fifth flow channel 50 have the same structure, so as to further simplify the manufacturing process of the entire collector.

[0065] Furthermore, each flow channel may have the following size parameters.

[0066] Specifically, the first flow channel 10 can be a glass tube with a diameter of 30±1mm and a length of 110±1mm; the second flow channel 20 and the third flow channel 30 can be glass tubes with a diameter of 16±1mm and a length of 35±1mm; the fourth flow channel 40 and the fifth flow channel 50 can be glass tubes with a diameter of 7±1mm and a length of 30±1mm.

[0067] It is worth noting that, in addition to being applicable to the rubidium bubble filling operation, the collector disclosed in the embodiment of the present invention can also be widely used in vacuum filling equipment 100 in other fields due to its versatility and compatibility.

[0068] In some embodiments, the first air guide port 21 , the second air guide port 22 , the third air guide port 23 and the fourth air guide port 24 may all be circular holes machined on the corresponding flow channels and extending radially, so as to simplify the manufacturing process of each air guide port as much as possible.

[0069] Example 2

[0070] Based on Example 1, considering the influence of the buffer gas flow rate, the vacuum level of the entire system, and the size of the air guide ports on the flow channel, when the buffer gas flows out from air guide ports of different sizes and impacts the inner wall of the corresponding flow channel, the solid particles in the buffer gas may have different sedimentation effects, resulting in different effectiveness of the collector in filtering solid particles. To this end, Example 2 of the present invention combines factors such as the buffer gas flow rate and the vacuum level of the entire system to limit the size of the air guide ports on the flow channel, so as to ensure that the collector has a good filtering effect under different operating conditions.

[0071] Specifically, in embodiment 2 of the present invention, the diameters of the first air guide port 21 , the second air guide port 22 , the third air guide port 23 and the fourth air guide port 24 are the same.

[0072] Moreover, under high vacuum molecular flow conditions, the relationship between the flow rate Q of the gas passing through the gas guide port and the flow conductance C is:

[0073] Q = C·ΔP (Equation 1);

[0074] In the above formula (1), ΔP is the pressure difference on both sides of the air guide port.

[0075] Furthermore, the expression of conductance C is:

[0076]

[0077] In the above formula (2), d is the diameter of the gas guide port; u is the average thermal motion speed of the gas molecules, and:

[0078]

[0079] In the above formula (3), R is the gas constant; T is the absolute temperature of the gas; and M is the molar mass of the gas.

[0080] Combining the above formulas (1) to (3), the calculation expression for the diameter of each air guide port can be obtained as follows:

[0081]

[0082] On this basis, the diameter of each gas-guiding hole can be calculated based on known parameters such as Q, ΔP, M, R, and T. Furthermore, determining the diameter of the gas-guiding holes in this way effectively intercepts any solid particles that may be present in the buffer gas as it passes through the gas-guiding holes, while also ensuring that the gas flow rate in the collector meets the requirements for filling and exhausting the rubidium bubble.

[0083] For example, in a specific working condition of the present invention, the gas constant R is 8.314 J / (mol·K); the absolute temperature T is 673 K; the molar mass M of the gas is 0.029 kg / mol; the gas flow rate Q through the gas guide port is 2.5×10 -8 Pa·m 3 / s; the pressure difference ΔP on both sides of the air guide port is 1×10 -5 Pa; Substituting the above parameters into formula (4), the diameter of the air guide port d≈0.5mm can be calculated.

[0084] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A high temperature resistant solid particle collector, characterized in that: The solid particle collector is made of high temperature resistant glass material; The solid particle collector includes a first flow channel, a second flow channel, a third flow channel, a fourth flow channel and a fifth flow channel; The first flow channel, the second flow channel and the third flow channel all extend in a vertical direction, and the top and bottom ends of the first flow channel, the second flow channel and the third flow channel are all closed structures; The second flow channel is provided inside the first flow channel and close to the bottom end of the first flow channel, and the third flow channel is provided inside the first flow channel and close to the top end of the first flow channel; The fourth flow channel has a first inlet and outlet at its bottom end, a closed top end, and sequentially passes through the bottom ends of the first and second flow channels before extending into the second flow channel; the fifth flow channel has a second inlet and outlet at its top end, a closed bottom end, and sequentially passes through the top ends of the first and third flow channels before extending into the third flow channel; The portion of the fourth flow channel located inside the second flow channel is provided with a first air guide port for connecting the fourth flow channel and the second flow channel, and the second flow channel is provided with a second air guide port for connecting the second flow channel and the first flow channel; the first air guide port and the second air guide port are staggered so that the first air guide port faces the inner wall of the second flow channel, and the second air guide port faces the inner wall of the first flow channel; Among them, the third flow channel is provided with a third air guide port for connecting the third flow channel and the first flow channel, and the part of the fifth flow channel located inside the third flow channel is provided with a fourth air guide port for connecting the fifth flow channel and the third flow channel; the third air guide port and the fourth air guide port are staggered so that the third air guide port faces the outer wall of the fifth flow channel, and the fourth air guide port faces the inner wall of the third flow channel.

2. The high temperature resistant solid particle collector according to claim 1, characterized in that: The first flow channel, the second flow channel, the third flow channel, the fourth flow channel and the fifth flow channel are coaxially arranged.

3. The high temperature resistant solid particle collector according to claim 1 or 2, characterized in that: The first air guide port and the second air guide port, and the third air guide port and the fourth air guide port are arranged at intervals of 180° along the circumferential direction of the first flow channel; Furthermore, the first air guide port is closer to the bottom end of the first flow channel than the second air guide port, and the fourth air guide port is closer to the top end of the first flow channel than the third air guide port.

4. The high temperature resistant solid particle collector according to claim 1 or 2, characterized in that: The bottom outer wall of the second flow channel and the bottom inner wall of the first flow channel, as well as the top outer wall of the third flow channel and the top inner wall of the first flow channel are all integrated structures; The connection between the fourth flow channel and the first flow channel, the connection between the fourth flow channel and the second flow channel, the connection between the fifth flow channel and the first flow channel, and the connection between the fifth flow channel and the third flow channel are all sintered and connected.

5. The high temperature resistant solid particle collector according to claim 1 or 2, characterized in that: The top and bottom ends of the first flow channel, the second flow channel and the third flow channel are all in an arc-shaped structure; The top end of the fourth flow channel and the bottom end of the fifth flow channel are both arc-shaped structures.

6. The high temperature resistant solid particle collector according to claim 1 or 2, characterized in that: The second flow channel and the third flow channel have the same structure, and the fourth flow channel and the fifth flow channel have the same structure.

7. The high temperature resistant solid particle collector according to claim 6, characterized in that: The diameter of the first flow channel is 30±1mm and the length is 110±1mm; the diameter of the second flow channel and the third flow channel is 16±1mm and the length is 35±1mm; the diameter of the fourth flow channel and the fifth flow channel is 7±1mm and the length is 30±1mm.

8. The high temperature resistant solid particle collector according to claim 1, characterized in that: The high temperature resistant glass material is high borosilicate glass.

9. The high temperature resistant solid particle collector according to claim 1, characterized in that: The first air guide port, the second air guide port, the third air guide port and the fourth air guide port are all circular holes processed on the corresponding flow channels and extending in the radial direction.

10. The high temperature resistant solid particle collector according to claim 9, characterized in that: The diameters of the first air guide port, the second air guide port, the third air guide port and the fourth air guide port are the same; In addition, the diameter of each air guide hole satisfies: In the above formula, d is the diameter of the gas guide port; Q is the flow rate of the gas passing through the gas guide port; ΔP is the pressure difference on both sides of the gas guide port; R is the gas constant; T is the absolute temperature of the gas; and M is the molar mass of the gas.

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