Adsorption bed with multiple safety protection

Abstract

The utility model relates to an adsorption bed with multiple safety protection, which comprises a shell, a filter chamber is formed in the hollow shell, the left side of the shell is connected with an air inlet pipe communicated with the filter chamber, and the right side of the shell is connected with an exhaust pipe communicated with the filter chamber; and the adsorption assembly is arranged in the shell and is used for adsorbing impurities in the hydrogen. The utility model relates to the technical field of hydrogen purification. According to the adsorption bed with the multiple safety protections, by arranging the warning assembly, when hydrogen leaks preliminarily, the inner shell can prevent the hydrogen from being directly discharged outwards, then the blocked hydrogen can be gathered above the inner shell to make contact with the gas sensor, the hydrogen detection precision of the gas sensor can be effectively improved, and the safety of the gas sensor is improved. And an alarm is given out in time after hydrogen leakage is detected, so that a maintainer can quickly position a leakage point for maintenance, and the safety of the adsorption bed can be effectively improved.

Description

Technical Field

[0001] This utility model relates to the technical field of hydrogen purification, and in particular to an adsorption bed with multiple safety protections. Background Technology

[0002] Polysilicon production is fundamental to the photovoltaic and semiconductor industries. The main raw materials for polysilicon are industrial silicon (silicon powder), hydrogen chloride, and hydrogen. The most common polysilicon production method involves a reduction reaction of trichlorosilane (TCS) with hydrogen at high temperatures to produce polysilicon. Therefore, the purity of hydrogen is crucial to the quality of the final product during polysilicon production.

[0003] In existing technologies, hydrogen adsorption technology utilizes specific materials (such as activated carbon, metal-organic frameworks (MOFs), and molecular sieves) to capture and remove impurities from hydrogen. These materials can effectively reduce harmful components in hydrogen through physical or chemical adsorption, thereby improving the purity and safety of hydrogen.

[0004] The interaction between hydrogen and metallic materials can lead to hydrogen embrittlement, reducing the mechanical properties of the materials and increasing the risk of leakage. This means that after long-term use, the internal pipes or valves of the adsorption bed may experience aging, wear, or corrosion, which can cause hydrogen leakage. Furthermore, due to the flammable and explosive nature of hydrogen, there are certain dangers involved in the adsorption and purification process. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide an adsorption bed with multiple safety protections in order to solve the technical problems mentioned in the background art.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0007] An adsorption bed with multiple safety protections includes:

[0008] The shell has a hollow interior forming a filter chamber. An air inlet pipe connected to the filter chamber is connected to the left side of the shell, and an exhaust pipe connected to the filter chamber is connected to the right side.

[0009] An adsorption component, which is housed inside the housing, is used to adsorb impurities in hydrogen gas;

[0010] The warning assembly consists of two parts, which are respectively located at the connection points between the air intake pipe and the exhaust pipe and the housing. The warning assembly includes a protective cover, an inner shell, a gas sensor, and an alarm unit. The protective cover and the inner shell are roughly frame-shaped. The protective cover is fixedly connected to the outer wall of the housing. The inner shell is located inside the protective cover and is fixedly connected to the pipe connection point of the housing. The gas sensor is fixedly connected to the top of the inner wall of the inner shell, and the alarm unit is connected to the outer wall of the housing.

[0011] Furthermore, air inlet slots are provided at both the top and bottom of the protective cover, and a fan is fixedly connected to the air inlet slot at the top of the protective cover.

[0012] Furthermore, a sleeve is fixedly connected to the bottom of the inner shell, and limit rings are fixedly connected to both the top and bottom of the sleeve. A piston is slidably arranged inside the limit rings, and a retaining ring is fixedly connected to the top of the piston. A spring is provided at the bottom of the retaining ring.

[0013] Furthermore, a circular groove is provided on the top of the piston, and an exhaust groove communicating with the circular groove is provided on the bottom of the side wall of the piston. When the spring pushes the retaining ring to contact the limiting ring on the top of the sleeve, the exhaust groove is located inside the sleeve.

[0014] Furthermore, a pressure switch is fixedly connected to the bottom of the protective cover directly below the piston, and the pressure switch is connected to the fan and the alarm unit via wires.

[0015] Furthermore, the alarm unit includes a warning light and a buzzer, the buzzer being fixedly connected to the outer wall of the protective cover, and the warning light being fixedly connected to the outer wall of the buzzer.

[0016] Furthermore, the adsorption assembly includes a partition and a filter element. The outer wall of the housing is provided with a plurality of slots spaced apart along the length direction. The filter element is inserted into the slot. The partition is fixedly connected to the slot in the filter chamber. The partition has a notch for accommodating the filter element on the side near the slot.

[0017] In summary, this utility model has at least one of the following beneficial technical effects:

[0018] 1. This adsorption bed with multiple safety protections, through the set warning components, can prevent hydrogen from being directly discharged when hydrogen initially leaks. Subsequently, the blocked hydrogen will gather above the inner shell and come into contact with the gas sensor, which can effectively improve the accuracy of the gas sensor in detecting hydrogen. After detecting hydrogen leakage, an alarm will be issued in time, so that maintenance personnel can quickly locate the leak point for repair, which can effectively improve the safety of the adsorption bed.

[0019] 2. This adsorption bed with multiple safety protections can be activated by a fan after a hydrogen leak, causing the fan to drive airflow and thus rapidly circulate air in the pipe connection area. This can prevent excessive hydrogen accumulation and avoid excessively high local hydrogen concentration, reducing the probability of an explosion and further improving the safety of the adsorption bed. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of an adsorption bed with multiple safety protections according to the present invention.

[0022] Figure 2 This is a schematic diagram of the internal structure of an adsorption bed with multiple safety protections according to the present invention.

[0023] Figure 3 This is a schematic diagram of the structure of a warning component in an adsorption bed with multiple safety protections according to the present invention.

[0024] Figure 4 This is a schematic diagram of the structure of a sleeve in an adsorption bed with multiple safety protections according to this utility model.

[0025] In the diagram, 1. Housing; 2. Adsorption assembly; 21. Partition; 22. Filter element; 3. Warning assembly; 31. Protective cover; 32. Inner shell; 33. Gas sensor; 34. Alarm unit; 341. Warning light; 342. Buzzer; 4. Filter chamber; 5. Inlet pipe; 6. Exhaust pipe; 7. Inlet slot; 8. Fan; 9. Sleeve; 10. Limiting ring; 11. Piston; 12. Retaining ring; 13. Spring; 14. Circular groove; 15. Exhaust slot; 16. Pressure switch; 17. Slot; 18. Notch. Detailed Implementation

[0026] The present invention will be further described in detail below with reference to the accompanying drawings.

[0027] Example:

[0028] Reference Figure 1 - Figure 4 This utility model discloses an adsorption bed with multiple safety protections, comprising:

[0029] The housing 1 has a hollow interior forming a filter chamber 4. An air inlet pipe 5 connected to the filter chamber 4 is connected to the left side of the housing 1, and an exhaust pipe 6 connected to the filter chamber 4 is connected to the right side.

[0030] Adsorption component 2, which is disposed inside housing 1, is used to adsorb impurities in hydrogen gas;

[0031] There are two warning components 3, which are respectively located at the connection points between the air intake pipe 5 and the exhaust pipe 6 and the housing 1. The warning components 3 include a protective cover 31, an inner shell 32, a gas sensor 33, and an alarm unit 34. The protective cover 31 and the inner shell 32 are generally frame-shaped. The protective cover 31 is fixedly connected to the outer wall of the housing 1. The inner shell 32 is located inside the protective cover 31 and is fixedly connected to the pipe connection point of the housing 1. The gas sensor 33 is fixedly connected to the top of the inner wall of the inner shell 32. The alarm unit 34 is connected to the outer wall of the housing 1.

[0032] In this embodiment, observation Figure 1 and Figure 2 It can be observed that a filter chamber 4 is formed in the hollow interior of the shell 1. An air inlet pipe 5 connected to the filter chamber 4 is connected to the left side of the shell 1, and an exhaust pipe 6 connected to the filter chamber 4 is connected to the right side. An adsorption component 2 is installed in the filter chamber 4 of the shell 1, which allows hydrogen gas to enter the filter chamber 4 through the air inlet pipe 5. Subsequently, the hydrogen gas comes into contact with the adsorption component 2, causing the impurities carried in the hydrogen gas to be adsorbed by the adsorption component 2, thereby achieving the effect of hydrogen gas filtration. Finally, the filtered hydrogen gas can be discharged through the exhaust pipe 6 to improve the purity of the hydrogen gas.

[0033] The interaction between hydrogen and metal materials can lead to hydrogen embrittlement, which reduces the mechanical properties of the materials and increases the risk of leakage. This means that after long-term use, the internal pipes or valves of the adsorption bed may experience aging, wear, or corrosion, which can cause hydrogen leakage. Furthermore, because hydrogen is flammable and explosive, it poses a certain degree of danger during the adsorption and purification process.

[0034] Therefore, observe Figure 2 It can be seen that warning components 3 are provided on both sides of the housing 1. The two warning components 3 are respectively located at the connection points of the air inlet pipe 5 and the exhaust pipe 6 with the housing 1. The warning components 3 include a protective cover 31, an inner shell 32, a gas sensor 33 and an alarm unit 34. The protective cover 31 and the inner shell 32 are roughly frame-shaped. The protective cover 31 is fixedly connected to the outer wall of the housing 1. The inner shell 32 is provided inside the protective cover 31. The inner shell 32 is fixedly connected to the pipe connection point of the housing 1. The gas sensor 33 is fixedly connected to the top of the inner wall of the inner shell 32. The alarm unit 34 is connected to the outer wall of the housing 1.

[0035] At this time, when there is a leak at the connection between the pipeline and the adsorption bed, hydrogen will directly enter the inner shell 32. Since the molecular weight of hydrogen is small, the leaked hydrogen will be compressed by the air and accumulate on the top of the inner shell 32 after being blocked by the inner shell 32. This will cause the gas sensor 33 to come into contact with the hydrogen, and then activate the alarm unit 34 to issue an alarm, which can promptly call maintenance personnel to maintain the adsorption bed, effectively improving the safety of the adsorption bed.

[0036] Among them, the gas sensor 33 mentioned above uses sensors with models such as TGS2615-E00 and TGS2616-C01, which can detect changes in hydrogen gas with high sensitivity.

[0037] In a further preferred embodiment of this utility model, such as Figure 3 As shown, air inlet slots 7 are provided at both the top and bottom of the protective cover 31, and a fan 8 is fixedly connected to the air inlet slot 7 at the top of the protective cover 31.

[0038] In this embodiment, by providing air inlet slots 7 at both the top and bottom of the protective cover 31, and fixing a fan 8 to the air inlet slot 7 at the top of the protective cover 31, the fan 8 can be turned on after the gas sensor 33 detects hydrogen and alarms, so that the fan 8 pushes the air to flow, thereby allowing the air in the pipeline connection area to flow quickly. This can prevent excessive accumulation of hydrogen and avoid excessively high local hydrogen concentration, reduce the probability of explosion, and further improve the safety of the adsorption bed.

[0039] In a further preferred embodiment of this utility model, such as Figure 4 As shown, a sleeve 9 is fixedly connected to the bottom of the inner shell 32. Limiting rings 10 are fixedly connected to both the top and bottom of the sleeve 9. A piston 11 is slidably arranged inside the limiting ring 10. A retaining ring 12 is fixedly connected to the top of the piston 11. A spring 13 is arranged at the bottom of the retaining ring 12.

[0040] In this embodiment, a sleeve 9 is fixedly connected to the bottom of the inner shell 32, and a limiting ring 10 is fixedly connected to both the top and bottom of the sleeve 9. A piston 11 is slidably arranged inside the limiting ring 10, and a retaining ring 12 is fixedly connected to the top of the piston 11. A spring 13 is provided at the bottom of the retaining ring 12. This allows the piston 11 to block the initial leakage of hydrogen, thereby allowing the hydrogen to accumulate inside the inner shell 32 first, further preventing hydrogen leakage.

[0041] Meanwhile, the hydrogen gas that is intercepted and cannot leak out can only gather above the inner shell 32, allowing the gas sensor 33 to have better contact with the hydrogen gas, which can effectively improve the accuracy of gas leak detection and further enhance its practicality.

[0042] In a further preferred embodiment of this utility model, such as Figure 4As shown, a circular groove 14 is provided on the top of the piston 11, and an exhaust groove 15 communicating with the circular groove 14 is provided on the bottom of the side wall of the piston 11. When the spring 13 pushes the retaining ring 12 to contact the limiting ring 10 on the top of the sleeve 9, the exhaust groove 15 is located inside the sleeve 9.

[0043] In this embodiment, a circular groove 14 is provided on the top of the piston 11, and an exhaust groove 15 communicating with the circular groove 14 is provided on the bottom of the side wall of the piston 11. When the spring 13 pushes the retaining ring 12 to contact the limiting ring 10 on the top of the sleeve 9, the exhaust groove 15 is located inside the sleeve 9. When hydrogen leaks quickly, causing the gas pressure inside the inner shell 32 to increase, the gas pressure can be used to push the piston 11 down, so that the gas inside the inner shell 32 can be slowly discharged through the circular groove 14 and the exhaust groove 15. This can avoid the instantaneous increase in concentration caused by the release of a large amount of hydrogen at one time, which can cause harm.

[0044] In a further preferred embodiment of this utility model, such as Figure 4 As shown, a pressure switch 16 is fixedly connected to the bottom of the protective cover 31 directly below the piston 11. The pressure switch 16 is connected to the fan 8 and the alarm unit 34 via wires.

[0045] In this embodiment, a pressure switch 16 is fixedly connected to the bottom of the protective cover 31 directly below the piston 11. The pressure switch 16 is connected to the fan 8 and the alarm unit 34 through wires. When the piston 11 moves down to exhaust gas, the pressure switch 16 can be activated, thereby making the fan 8 and the alarm unit 34 run. This can avoid the inability to alarm in a timely and effective manner after the gas sensor 33 fails or is damaged, and can further improve the safety of the adsorption bed.

[0046] In a further preferred embodiment of this utility model, such as Figure 2 As shown, the alarm unit 34 includes a warning light 341 and a buzzer 342. The buzzer 342 is fixedly connected to the outer wall of the protective cover 31, and the warning light 341 is fixedly connected to the outer wall of the buzzer 342.

[0047] In this embodiment, the alarm unit 34 includes a warning light 341 and a buzzer 342. The buzzer 342 is fixedly connected to the outer wall of the protective cover 31, and the warning light 341 is fixedly connected to the outer wall of the buzzer 342. Figure 2 As can be seen, there is more than one warning light 341. When a hydrogen leak alarm is triggered, not only can the buzzer 342 sound an alarm, but the alternating flashing of multiple warning lights 341 can also help maintenance personnel quickly locate the leak point, thus improving maintenance efficiency.

[0048] In a further preferred embodiment of this utility model, such as Figure 2As shown, the adsorption assembly 2 includes a partition 21 and a filter element 22. The outer wall of the housing 1 is provided with a plurality of slots 17 spaced apart along the length direction. The filter element 22 is inserted into the slots 17. The partition 21 is fixedly connected to the position corresponding to the slots 17 in the filter chamber 4. The partition 21 has a notch 18 for accommodating the filter element 22 on the side near the slots 17.

[0049] In this embodiment, the adsorption assembly 2 includes a partition 21 and a filter element 22. The outer wall of the housing 1 is provided with a plurality of slots 17 spaced apart along the length direction. The filter element 22 is inserted into the slot 17. The partition 21 is fixedly connected to the position corresponding to the slot 17 in the filter chamber 4. The partition 21 is provided with a notch 18 for accommodating the filter element 22 on the side near the slot 17. The adsorption efficiency of impurities can be improved by filtering hydrogen gas multiple times, thereby effectively ensuring the purification effect of hydrogen gas.

[0050] The embodiments described herein are preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape, and principle of this utility model should be included within the scope of protection of this utility model.

Claims

1. An adsorption bed with multiple security safeguards, characterized in that, Include: The shell (1), the filter chamber (4) is hollowly formed in the shell (1), the left side of the shell (1) is connected with the air inlet pipe (5) communicated with the filter chamber (4), the right side is connected with the exhaust pipe (6) communicated with the filter chamber (4); Adsorption assembly (2) is arranged in the shell (1), for adsorbing impurities in hydrogen; Warning assembly (3) is provided with two, two warning assembly (3) is arranged in the air inlet pipe (5) and exhaust pipe (6) and the junction of shell (1), warning assembly (3) includes protective cover (31), inner shell (32), gas sensor (33) and alarm unit (34), protective cover (31) and inner shell (32) are generally frame, wherein the protective cover (31) is fixedly connected to the outer wall of the shell (1), the protective cover (31) is provided with inner shell (32), the inner shell (32) is fixedly connected to the pipeline junction position of the shell (1), the inner wall top of the inner shell (32) is fixedly connected with the gas sensor (33), the outer shell (1) is connected with alarm unit (34).

2. The adsorbent bed with multiple safety protections according to claim 1, wherein, The top and bottom of the protective cover (31) are provided with air inlet grooves (7), and the fan (8) is fixedly connected to the air inlet groove (7) at the top of the protective cover (31).

3. The adsorbent bed with multiple safety guards according to claim 2, wherein, The bottom of the inner shell (32) is fixedly connected with the sleeve (9), the top and bottom of the sleeve (9) are fixedly connected with the limiting ring (10), the piston (11) is slidably arranged in the limiting ring (10), the top of the piston (11) is fixedly connected with the retainer ring (12), and the bottom of the retainer ring (12) is provided with the spring (13).

4. The adsorbent bed with multiple safety protections according to claim 3, characterized in that, The top of the piston (11) is provided with a circular groove (14), and the bottom of the side wall of the piston (11) is provided with an exhaust groove (15) communicated with the circular groove (14), when the spring (13) pushes the retainer ring (12) to contact the limiting ring (10) at the top of the sleeve (9), the exhaust groove (15) is located in the sleeve (9).

5. The adsorbent bed with multiple safety guards according to claim 4, wherein, The bottom of the protective cover (31) is fixedly connected with the pressure touch switch (16) below the piston (11), and the pressure touch switch (16) is connected with the fan (8) and the alarm unit (34) through wires.

6. The adsorbent bed with multiple safety guards according to claim 5, wherein, The alarm unit (34) includes warning light (341) and buzzer (342), the buzzer (342) is fixedly connected with the outer wall of the protective cover (31), and the outer wall of the buzzer (342) is fixedly connected with the warning light (341).

7. The adsorbent bed with multiple safety guards according to claim 6, wherein, The adsorption assembly (2) includes a baffle (21) and a filter core (22), a plurality of insertion grooves (17) are arranged on the outer wall of the shell (1) along the length direction, the filter core (22) is inserted into the insertion groove (17), the baffle (21) is fixedly connected to the position corresponding to the insertion groove (17) in the filter chamber (4), and the side close to the insertion groove (17) of the baffle (21) is provided with a notch (18) for accommodating the filter core (22).

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