Low-temperature gas collecting device
By using a spiral guide step and a V-shaped guide slope structure in the cryogenic gas collection device, combined with a dredging device, the problems of easy clogging and low purity of the gas collection device are solved, achieving efficient and low-cost gas collection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHENGZHOU LENGBIAO INTELLIGENT EQUIPMENT CO LTD
- Filing Date
- 2025-04-16
- Publication Date
- 2026-04-14
AI Technical Summary
Existing cryogenic gas collection devices are prone to blockage due to the accumulation of impurities, and have low gas purity and collection efficiency.
By employing a spiral guide step and a V-shaped guide slope structure to change the direction of gas swirl, and combining this with a clearing device to squeeze and block impurities, gas purity and collection efficiency are improved.
It significantly reduces equipment costs, improves gas collection efficiency, avoids clogging, and enhances gas purity.
Smart Images
Figure CN224113537U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of gas collection equipment, and specifically relates to a cryogenic gas collection device. Background Technology
[0002] A cryogenic gas collection device is a device that achieves gas separation and purification through cryogenic condensation technology. Its core principle is to use a cryogenic medium (such as liquid nitrogen, mechanical refrigeration, or cryogenic circulating fluid) to cool the target gas below its dew point, causing it to condense into a liquid or solid state, thus achieving efficient collection. This device is widely used in chemical production, medical fields (such as cryogenic preservation of biological samples), scientific research experiments (such as rare gas separation), and environmental monitoring (such as volatile organic compound (VOC) capture). Its advantages include the ability to handle gases that are difficult to liquefy at room temperature and pressure, and the ability to precisely control the temperature gradient to improve collection efficiency.
[0003] However, in existing gas collection devices, impurities (such as moisture and grease) or incompletely vaporized condensates in the gas tend to accumulate at the discharge port during the condensation process, forming physical blockages and affecting continuous operation efficiency. Simultaneously, high-boiling-point impurities (such as moisture and grease) in the gas will also condense synchronously with the target gas at low temperatures, reducing the efficiency and speed of gas collection. Furthermore, some gases may contain fine dust particles, which will also be mixed with the target gas during the cryogenic gas collection process and discharged together, resulting in impurities in the collected target gas and affecting the collection effect. Therefore, it is essential to provide a cryogenic gas collection device that is rationally designed, avoids blockages, has high collection efficiency, and improves gas purity. Utility Model Content
[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a cryogenic gas collection device that is reasonably designed, avoids clogging, has high collection efficiency, and produces high gas purity.
[0005] The purpose of this utility model is achieved as follows: A cryogenic gas collection device includes a shell, inside which a cooling device is installed. An outlet flange is connected to the middle of the top of the cooling device. A guide step is provided at the bottom of the outlet flange, and several baffles are provided at the bottom of the guide step. An inlet flange is connected to the right side of the top of the cooling device. A pressure gauge and a temperature sensor are respectively installed on the front and rear sides of the cooling device. A guide slope A and a guide slope B are provided inside the cooling device. Guide slope A and guide slope B are arranged as smooth V-shaped ramps. The tops of guide slope A and guide slope B are fixedly connected to the inner wall of the cooling device. A guide plate is provided at the bottom connection of slope B. A dredging device is provided at the bottom of the guide plate. The dredging device includes a handle. The outer end of the handle penetrates the cooling device and the outer wall of the shell and is formed on the outer side of the shell. The handle is slidably connected to the cooling device and the shell. A slag discharge port is connected to the left end of the guide plate. The output end of the slag discharge port penetrates the cooling device and the shell and is formed on the outer side of the shell. An inlet and an outlet are arranged sequentially at the top of the slag discharge port. The output ends of the inlet and outlet penetrate the cooling device and the shell respectively and are formed on the outer side of the shell. A heat dissipation grille is provided at the top of the side of the shell. A display screen is provided at the top of the front of the shell. An exhaust grille is provided at the bottom of the front of the shell.
[0006] Preferably, both the inlet flange and the outlet flange include a flange and a pipe, the flange and the pipe are sealed together, and the inlet flange, the outlet flange and the cooling device are both sealed together.
[0007] Preferably, the guide step has a spiral structure and is fixedly connected to the pipe. The baffle has an inverted trapezoidal structure and is evenly distributed at the bottom of the guide step.
[0008] Preferably, the unblocking device includes a connecting plate and a cavity. The cavity is disposed at the bottom end of the guide plate and is fixedly connected to the guide plate. The connecting plate is sealed inside the cavity and can move back and forth inside the cavity. The upper end of the connecting plate is in close contact with the bottom end of the guide plate, and the lower end of the connecting plate is in close contact with the inner surface of the cavity. A connecting block is fixed to the top end of the handle. The connecting block passes through the cavity, the connecting block and the guide plate from bottom to top. A baffle is fixed to the top end of the connecting block, and the baffle is just stuck on the top surface of the guide plate.
[0009] Preferably, the cavity and the guide plate are provided with through holes in the middle, the connecting plate is provided with a clearing hole in the middle, the connecting block passes through the through hole of the cavity, the clearing hole on the connecting plate and the through hole on the guide plate from bottom to top, and the baffle is just stuck on the through hole on the top surface of the guide plate.
[0010] Preferably, the size of the unblocking hole is the same as the cross-sectional size of the connecting block, and the size of the baffle along the length of the handle is greater than the width of the unblocking hole.
[0011] Preferably, the guide plate has a horizontally inclined structure, with one end connected to the slag discharge port being the low end and the other end being the high end, and the inclination angle being 30° to 45°.
[0012] Preferably, the cooling device has an opening groove A at its bottom end, the housing has an opening groove B at its bottom end, and the outer end of the handle passes through the opening groove A and the opening groove B and is formed on the outside of the housing. The handle can move within the opening groove A and the opening groove B.
[0013] Preferably, both the opening slot A and the opening slot B are in the form of a transverse P-shape, and the handle can move within the P-shape.
[0014] The beneficial effects of this utility model are:
[0015] 1. This utility model employs a spiral guide step within the outlet flange pipe, which alters the gas swirl direction. This change in swirl direction forces periodic gas mixing, eliminating temperature stratification across the pipe cross-section and preventing the concentrated condensation of high-boiling-point impurities in specific areas. Simultaneously, the spiral structure induces three-dimensional turbulence, increasing the contact frequency with the pipe's inner wall by 2-3 times, accelerating heat transfer to the low-temperature medium. The change in swirl direction prevents the stable formation of a thermal boundary layer, improving heat transfer efficiency by approximately 40%, significantly reducing equipment operating costs and enhancing gas collection efficiency. Furthermore, since dust particles are heavier than gas, the spiral direction generates a centrifugal force field. Due to the large weight of the dust particles and the change in swirl direction, they adhere to the guide step, further reducing dust in the collected gas. Several baffles are installed at the bottom of the guide step. These baffles abruptly change the gas's direction of movement. Due to the large weight of the dust particles and inertia, dust particles in the gas are adsorbed onto the baffles before they can change direction. The presence of multiple baffles further enhances gas purity and collection efficiency.
[0016] 2. The dredging device is used. The connecting block can squeeze the condensed impurities that are blocking the slag discharge port back and forth. Through the action of the back and forth squeezing force, the condensed impurities are broken up and the slag discharge port is cleared. This also accelerates the discharge of condensed impurities and improves the work efficiency.
[0017] 3. The guide slopes A and B are designed with smooth V-shaped ramps, which reduces the resistance to the falling of condensed impurities, facilitates the natural settling of condensed impurities, facilitates the effective removal of impurities, and improves the purity of the gas to be collected inside the cooling device.
[0018] In summary, this invention employs a guide slope, guide steps, and unblocking device, which reduces equipment costs, improves the efficiency of gas collection under low-temperature conditions, avoids blockage by condensed impurities, and significantly improves the purity of the collected target gas. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the structure of a cryogenic gas collection device according to this utility model.
[0020] Figure 2 This is a schematic diagram of the cooling device of a cryogenic gas collection device according to this utility model.
[0021] Figure 3 This is a cross-sectional view of the outlet flange pipe of a cryogenic gas collection device according to this utility model.
[0022] Figure 4 This is a schematic diagram of the flow guide stage of a cryogenic gas collection device according to this utility model.
[0023] Figure 5 This is a schematic diagram of the internal structure of the cooling device of a cryogenic gas collection device according to this utility model.
[0024] Figure 6 This is a schematic diagram of the unblocking device of a low-temperature gas collection device according to this utility model.
[0025] In the diagram: 1. Shell 2. Cooling device 3. Outlet flange 301. Flange 302. Pipe 303. Guide step 304. Baffle 4. Inlet flange 5. Temperature sensor 6. Pressure gauge 7. Slag discharge port 8. Inlet 9. Outlet 10. Unblocking device 1001. Handle 1002. Connecting block 1003. Baffle 1004. Cavity 1005. Connecting plate 1006. Unblocking hole 11. Opening groove A12. Heat dissipation grille 13. Exhaust grille 14. Display screen 15. Opening groove B16. Guide slope A17. Guide slope B18. Guide plate 19. Through hole. Detailed Implementation
[0026] The following are specific embodiments of the present invention, and the technical solution of the present invention will be further described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.
[0027] like Figure 1-6As shown, a cryogenic gas collection device includes a housing 1. A cooling device 2 is disposed inside the housing 1. An outlet flange pipe 3 is connected to the middle of the top of the cooling device 2. A guide step 303 is disposed at the bottom of the outlet flange pipe 3. Several baffles 304 are disposed at the bottom of the guide step 303. An inlet flange pipe 4 is connected to the right side of the top of the cooling device 2. A pressure gauge 6 and a temperature sensor 5 are respectively disposed on the front and rear sides of the cooling device 2. A guide slope A16 and a guide slope B17 are disposed inside the cooling device 2. The guide slopes A16 and B17 are arranged in a smooth V-shape. The tops of the guide slopes A16 and B17 are fixedly connected to the inner wall of the cooling device 2. A guide is disposed at the bottom connection of the guide slopes A16 and B17. The guide plate 18 has a dredging device 10 at its bottom end. The dredging device 10 includes a handle 1001. The outer end of the handle 1001 penetrates the cooling device 2 and the outer wall of the housing 1 and is formed on the outer side of the housing 1. The handle 1001 is slidably connected to the cooling device 2 and the housing 1. The left end of the guide plate 18 is connected to a slag discharge port 7. The output end of the slag discharge port 7 penetrates the cooling device 2 and the housing 1 and is formed on the outer side of the housing 1. The upper part of the slag discharge port 7 is provided with an inlet 8 and an outlet 9. The output ends of the inlet 8 and the outlet 9 respectively penetrate the cooling device 2 and the housing 1 and are formed on the outer side of the housing 1. The top side of the housing 1 is provided with a heat dissipation grille 12. The top front of the housing 1 is provided with a display screen 14. The bottom front of the housing 1 is provided with an exhaust grille 13.
[0028] The pressure gauge 6 and temperature sensor 5 allow for real-time monitoring of the internal pressure and temperature of the cooling device 2, facilitating further operation by staff. The V-shaped smooth slopes A16 and B17 allow gases with boiling points higher than a specified temperature to condense into liquid or solid states when the temperature inside the cooling device 2 drops to a designated level. These gases then fall onto the V-shaped smooth slopes and finally onto the guide plate 18, discharging along the guide plate 18 and the slag outlet 7, thus facilitating the removal of condensed impurities. The heat dissipation grille 12 is located on the side of the housing 1, near the condensate gas inlet 8 and outlet 9, increasing the heat transfer area and promoting heat dissipation, thereby improving the cooling effect. The display screen 14 functions similarly to existing low-temperature gas collection devices, allowing staff to view the internal parameters of the cooling device 2 in real time. The exhaust grille 13 helps cool the power supply equipment in the housing 1.
[0029] The inlet flange pipe 4 and the outlet flange pipe 3 each include a flange 301 and a pipe 302. The flange 301 and the pipe 302 are sealed together. The inlet flange pipe 4 and the outlet flange pipe 3 are both sealed together with the cooling device 2. The sealed connection method avoids the leakage of cooling capacity and gas in the cooling device 2.
[0030] The guide step 303 has a spiral structure and is fixedly connected to the pipe 302. The baffle 304 has an inverted trapezoidal structure and is evenly distributed at the bottom end of the guide step 303.
[0031] The spiral guide step 303 can change the swirling direction of the gas. This change in swirling direction forces the gas to mix periodically, eliminating temperature stratification at the cross-section of the pipe 302 and preventing high-boiling-point impurities from condensing in specific areas. Simultaneously, the spiral structure allows the gas to form three-dimensional turbulence, increasing the contact frequency with the inner wall of the pipe 302 by 2-3 times, accelerating heat transfer to the low-temperature medium. The change in swirling direction prevents the stable formation of a thermal boundary layer, improving heat transfer efficiency by approximately 40%, significantly reducing equipment operating costs and increasing gas collection efficiency. Furthermore, since the weight of dust is greater than the weight of gas, the spiral swirling direction generates a centrifugal force field. Due to the large weight of the dust and the change in swirling direction, it adheres to the guide step 303, further reducing dust in the collected gas. The trapezoidal baffle 304 can also abruptly change the gas's direction of movement. Due to the large weight of the dust and the effect of inertia, dust in the gas will be adsorbed onto the baffle 304 before it can change direction. The presence of multiple baffles 304 can further improve gas purity and collection efficiency.
[0032] The unblocking device 10 includes a connecting plate 1005 and a cavity 1004. The cavity 1004 is located at the bottom end of the guide plate 18 and is fixedly connected to the guide plate 18. The connecting plate 1005 is sealed inside the cavity 1004 and can move back and forth inside the cavity 1004. The upper end of the connecting plate 1005 is in close contact with the bottom end of the guide plate 18, and the lower end of the connecting plate 1005 is in close contact with the inner surface of the cavity 1004. A connecting block 1002 is fixed to the top end of the handle 1001. The connecting block 1002 passes through the cavity 1004, the connecting block 1002 and the guide plate 18 from bottom to top. A baffle 1003 is fixed to the top end of the connecting block 1002, and the baffle 1003 is just stuck on the top surface of the guide plate 18.
[0033] The cavity 1004 is fixedly connected to the guide plate 18, and the connecting plate 1005 is sealed inside the cavity 1004, which limits the front-to-back and up-to-down positions of the connecting plate 1005, so that the connecting plate 1005 can only move back and forth along the length direction of the guide plate 18. The connecting plate 1005 is sealed inside the cavity 1004, which ensures the sealing of the connection between the connecting plate 1005 and the guide plate 18, avoids the overflow of cold energy in the cooling device 2, and ensures the cooling effect of the cooling device 2. The fixed setting of the handle 1001, the baffle 1003 and the connecting block 1002 ensures the consistency of the movement of the three.
[0034] The cavity 1004 and the guide plate 18 are both provided with through holes 19 in the middle. The connecting plate 1005 is provided with a dredging hole 1006 in the middle. The connecting block 1002 passes through the through hole 19 of the cavity 1004, the dredging hole 1006 on the connecting plate 1005 and the through hole 19 on the guide plate 18 from bottom to top. The baffle 1003 is just stuck in the through hole 19 on the top surface of the guide plate 18. The size of the dredging hole 1006 is the same as the cross-sectional size of the connecting block 1002. The size of the baffle 1003 along the length of the handle 1001 is greater than the width of the through hole 19.
[0035] The size of the unblocking hole 1006 is the same as the cross-sectional size of the connecting block 1002. The connecting block 1002 can move freely up and down in the through hole 19 and the unblocking hole 1006, thereby driving the baffle 1003 and handle 1001 connected to it to move up and down together. The size of the baffle 1003 along the length of the handle 1001 is larger than the width of the through hole 19, which can ensure that the baffle 1003 can stay on the top surface of the guide plate 18 without falling off, and further realizes the vertical limitation of the handle 1001 and the connecting block 1002, preventing the handle 1001 from falling off.
[0036] The guide plate 18 is a horizontally inclined structure, with one end connected to the slag discharge port 7 being the low end and the other end being the high end, with an inclination angle of 30° to 45°.
[0037] The guide plate 18 is set horizontally and inclined, and one end of the slag discharge port 7 is at a low position, which ensures that the condensed impurities that settle down at low temperature can slide better along the guide plate 18 into the slag discharge port 7 under their own gravity and be discharged through the slag discharge port 7.
[0038] The cooling device 2 has an opening groove A11 at its bottom end, and the housing 1 has an opening groove B15 at its bottom end. The handle 1001 extends through the opening grooves A11 and B15 and is formed on the outside of the housing 1. The handle 1001 can move within the opening grooves A11 and B15. Both the opening grooves A11 and B15 are transverse P-shaped structures, and the handle 1001 can move within these P-shaped structures.
[0039] The handle 1001 can move within the P-shaped structure. When the handle 1001 is at the lowest point of the arc groove of the P-shape, the bottom surface of the baffle 1003 is in close contact with the top surface of the guide plate 18, and the guide plate 18 can discharge slag normally. When the slag discharge port 7 of the guide plate 18 is blocked, the operator can lift the handle 1001 upwards, thereby driving the connecting block 1002 to move upwards. Then, the operator can hold the handle 1001 and move it back and forth along the horizontal groove of the P-shaped structure, thereby driving the connecting block 1002 to move back and forth along the guide plate 18, thereby squeezing the blocked condensed impurities back and forth.
[0040] This invention employs a three-stage cascade cooling system, connecting the inlet 8 and outlet 9 of the cooling device 2 to cool it. The inlet flange 4 is sealed to a pipe 302 for collecting the gas, and the outlet flange 3 is sealed to a pipe 302 for collecting the separated gas. During operation, after the temperature inside the cooling device 2 reaches the specified gas boiling point, as observed on the display screen 14, the mixed gas to be collected is introduced through the inlet flange 4. Once inside the cooling device 2, under the influence of low temperature, gases and impurities above their boiling point will settle and be discharged through a guide tube. The smooth V-shaped ramp formed by the flow slope A16 and the guide slope B17 slides into the guide plate 18, and then flows through the guide plate 18 into the slag discharge port 7 for collection. When condensed impurities clog the slag discharge port 7, the handle 1001 can be lifted upwards, causing the connecting block 1002 to move upwards, and then the handle 1001 can be moved horizontally back and forth, thereby causing the connecting block 1002 to move back and forth along the guide plate 18. This back-and-forth squeezing can break up the condensed impurities clogging the slag discharge port 7, and through the back-and-forth squeezing force, the condensed impurities can be dispersed, thus clearing the slag discharge port 7. The process of clearing blockages also accelerates the removal of condensed impurities. On the other hand, the gas to be collected, since it has not yet reached its boiling point temperature, is still in a gaseous state and will be discharged through the outlet flange pipe 3 under pressure. When the gas passes through the guide step 303 and the baffle 304 in the outlet flange pipe 3, the guide step 303 will change the direction of gas movement, which can force the gas to mix periodically, eliminate the temperature stratification phenomenon of the pipe 302 cross section, and prevent high-boiling-point impurities from condensing in specific areas. At the same time, the spiral structure can make the gas form three-dimensional turbulence, which can accelerate the heat transfer to the outside. The transfer of the low-temperature medium and the change in the direction of rotation can prevent the stable formation of the thermal boundary layer. Since the weight of the dust is greater than that of the gas, the spiral direction can generate a centrifugal force field. Due to the large weight of the dust and the change in the direction of rotation, it will adhere to the guide step 303, further reducing the dust in the collected gas. At the same time, the baffle 304 can also abruptly change the direction of gas movement. Due to the large weight of the dust and the effect of inertia, the dust in the gas will be adsorbed on the baffle 304 because it does not have time to change direction. The setting of several baffles 304 can further improve the purity of the gas and the collection effect.
[0041] In summary, this invention employs a guide slope, guide steps, and unblocking device, which reduces equipment costs, improves the efficiency of gas collection under low-temperature conditions, avoids blockage by condensed impurities, and significantly improves the purity of the collected target gas.
[0042] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. Cryogenic gas collection apparatus comprising a housing (1), characterised in that: The housing (1) is equipped with a cooling device (2). The top center of the cooling device (2) is connected to an outlet flange pipe (3). The bottom of the outlet flange pipe (3) is equipped with a flow guide step (303). The bottom of the flow guide step (303) is equipped with several baffles (304). The right side of the top of the cooling device (2) is connected to an inlet flange pipe (4). The front and rear sides of the cooling device (2) are respectively equipped with a pressure gauge (6) and a temperature sensor (5). The cooling device (2) is equipped with a flow guide slope A (16) and a flow guide slope B (17). The flow guide slope A (16) and the flow guide slope B (17) are arranged in a smooth V-shape. The top of the flow guide slope A (16) and the flow guide slope B (17) are fixedly connected to the inner wall of the cooling device (2). The bottom connection of the flow guide slope A (16) and the flow guide slope B (17) is equipped with a flow guide plate (18). The bottom of the flow guide plate (18) is equipped with a flow guide plate (18). There is a dredging device (10), which includes a handle (1001). The outer end of the handle (1001) passes through the cooling device (2) and the outer wall of the housing (1) and is formed on the outside of the housing (1). The handle (1001) is slidably connected to the cooling device (2) and the housing (1). The left end of the guide plate (18) is connected to a slag discharge port (7). The output end of the slag discharge port (7) passes through the cooling device (2) and the housing (1) and is formed on the outer side of the housing (1). An inlet (8) and an outlet (9) are arranged sequentially on the upper part of the slag discharge port (7). The output ends of the inlet (8) and the outlet (9) pass through the cooling device (2) and the housing (1) respectively and are formed on the outer side of the housing (1). A heat dissipation grille (12) is arranged on the top side of the housing (1). A display screen (14) is arranged on the top front side of the housing (1). An exhaust grille (13) is arranged on the bottom front side of the housing (1).
2. A cryogenic gas collection device according to claim 1, wherein: The inlet flange (4) and outlet flange (3) both include a flange (301) and a pipe (302). The flange (301) and the pipe (302) are sealed together. The inlet flange (4), outlet flange (3) and cooling device (2) are both sealed together.
3. The cryogenic gas collection device according to claim 2, characterized in that: The guide step (303) has a spiral structure and is fixedly connected to the pipe (302). The baffle (304) has an inverted trapezoidal structure and is evenly distributed at the bottom of the guide step (303).
4. The cryogenic gas collection device according to claim 1, characterized in that: The unblocking device (10) includes a connecting plate (1005) and a cavity (1004). The cavity (1004) is disposed at the bottom end of the guide plate (18) and fixedly connected to the guide plate (18). The connecting plate (1005) is sealed inside the cavity (1004) and can move back and forth inside the cavity (1004). The upper end of the connecting plate (1005) is in close contact with the bottom end of the guide plate (18). The lower end of the handle (1005) is in close contact with the inner surface of the cavity (1004). The top end of the handle (1001) is fixed with a connecting block (1002). The connecting block (1002) passes through the cavity (1004), the connecting block (1002) and the guide plate (18) from bottom to top. The top end of the connecting block (1002) is fixed with a baffle (1003). The baffle (1003) is just stuck on the top surface of the guide plate (18).
5. A cryogenic gas collection device according to claim 4, characterized in that: Both the cavity (1004) and the guide plate (18) are provided with through holes (19) in the middle. The connecting plate (1005) is provided with a dredging hole (1006) in the middle. The connecting block (1002) passes through the through hole (19) of the cavity (1004), the dredging hole (1006) on the connecting plate (1005) and the through hole (19) on the guide plate (18) from bottom to top. The baffle (1003) is just stuck on the through hole (19) on the top surface of the guide plate (18).
6. A cryogenic gas collection device according to claim 5, characterized in that: The size of the unblocking hole (1006) is the same as the cross-sectional size of the connecting block (1002), and the size of the baffle (1003) along the length of the handle (1001) is greater than the width of the through hole (19).
7. A cryogenic gas collection device according to claim 6, characterized in that: The guide plate (18) has a horizontally inclined structure. One end connected to the slag discharge port (7) is the low end, and the other end is the high end. The inclination angle is 30° to 45°.
8. A cryogenic gas collection device according to claim 1, characterized in that: The cooling device (2) has an opening groove A (11) at its bottom end, and the housing (1) has an opening groove B (15) at its bottom end. The handle (1001) extends through the opening groove A (11) and the opening groove B (15) and is formed on the outside of the housing (1). The handle (1001) can move within the opening groove A (11) and the opening groove B (15).
9. A cryogenic gas collection device according to claim 8, characterized in that: Both the opening slot A (11) and the opening slot B (15) are transverse P-shaped structures, and the handle (1001) can move within the P-shaped structure.