Modularized anti-radiation ultralow-temperature vacuum pump suitable for deep space exploration

Abstract

The invention relates to the technical field of ultralow-temperature vacuum pumps, and particularly discloses a modularized anti-radiation ultralow-temperature vacuum pump suitable for deep space exploration, which comprises a pump shell, a first end plate is arranged at one end of the pump shell, a second end plate is arranged at the other end of the pump shell, and a radiation baffle is arranged in the pump shell through a connecting mechanism. An adsorption mechanism is arranged in the pump shell outside the radiation baffle and connected with the first end plate through a mounting mechanism, a cold shield is arranged in the pump shell on the side, away from the radiation baffle, of the adsorption mechanism, and a connecting shell is arranged between the first end plate and the second end plate and wraps the outer side of the pump shell. A protection mechanism is arranged between the connecting shell and the pump shell. By arranging a series of structures, the double-layer shell of the ultralow-temperature vacuum pump is provided with a protection structure, the pump shell has good internal protection performance, large-area cooling adsorption in the ultralow-temperature vacuum pump is uniform and balanced, and the adsorption mechanism is detachable, double-layer and good in sealing performance.

Description

Technical Field

[0001] This invention relates to the field of cryogenic vacuum pump technology, specifically a modular radiation-resistant cryogenic vacuum pump suitable for deep space exploration. Background Technology

[0002] Modular radiation-resistant cryogenic vacuum pumps for deep space exploration are critical devices designed specifically for extreme space environments. They aim to maintain ultra-high vacuum conditions inside probes or experimental chambers, while resisting cosmic radiation, adapting to extremely low temperatures, and supporting system-level scalability. The core characteristics of this vacuum pump are reflected in its specialized design for deep space environments: First, the modular design allows for flexible combination of pump units according to mission requirements, facilitating maintenance, upgrades, or adaptation to the volume constraints of different probes; second, radiation resistance is achieved through the selection of radiation-hardened electronic components, shielding materials, and fault-tolerant circuit design, ensuring stable operation under cosmic ray and solar particle events; third, cryogenic adaptability requires pump materials and lubricants to maintain structural integrity and vacuum performance in liquid nitrogen or liquid helium temperature ranges (e.g., 20K to 150K), avoiding brittleness or cold welding; finally, vacuum performance must reach ultra-high vacuum levels to support scientific tasks such as mass spectrometry analysis and cryogenic experiments.

[0003] Currently, the adsorption structure inside the modular radiation-resistant cryogenic vacuum pump for deep space exploration uses multiple independently set adsorption plates with spacing between them. Compressed air enters centrally from the pump inlet, resulting in a small adsorption area for the adsorption plates inside the cryogenic vacuum pump. This leads to incomplete and uneven adsorption of compressed air within the pump. Furthermore, the cryogenic vacuum pump casing is single-layered, providing only limited protection for the internal components. In contrast, the casing offers poor adaptability to changes in the external environment. Summary of the Invention

[0004] The purpose of this invention is to provide a modular, radiation-resistant, cryogenic vacuum pump suitable for deep space exploration, in order to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a modular radiation-resistant cryogenic vacuum pump suitable for deep space exploration, comprising a pump housing, a first end plate at one end of the pump housing, a second end plate at the other end of the pump housing, a radiation baffle inside the pump housing via a connecting mechanism, an adsorption mechanism inside the pump housing outside the radiation baffle, the adsorption mechanism being connected to the first end plate via an installation mechanism, a cold shield inside the pump housing on the side of the adsorption mechanism away from the radiation baffle, a connecting shell between the first and second end plates, the connecting shell being wrapped around the outside of the pump housing, a protective mechanism between the connecting shell and the pump housing, a fixing seat at the bottom of the connecting shell, a pump inlet in the middle of the second end plate, a valve plate inside the pump inlet via a valve stem, an actuator at the top of the pump inlet, the actuator being connected to the valve plate via the valve stem.

[0006] Preferably, the adsorption mechanism includes a first adsorption cylinder, a second adsorption cylinder, an adsorption plate, a cooling inflow channel, a cooling return channel, an annular mounting plate, an annular distribution pipe, an annular outlet pipe, a cooling inlet, and a cooling outlet. An adsorption plate is located inside the pump housing between the cold shield and the radiation baffle. An annular mounting plate is located at one end of the adsorption plate. A first adsorption cylinder is located on the side of the adsorption plate closest to the radiation baffle, and a second adsorption cylinder is located on the side of the adsorption plate closest to the cold shield. The first and second adsorption cylinders are fixedly connected to the annular mounting plate. An annular distribution pipe and an annular outlet pipe are located on the side of the annular mounting plate furthest from the adsorption plate. A cooling inflow channel is located inside the first adsorption cylinder, and a cooling return channel is located inside the second adsorption cylinder. The cooling inflow channel communicates with the annular distribution pipe, and the cooling return channel is connected to the annular outlet pipe. A communication port is provided between the ends of the annular distribution pipe and the annular outlet pipe furthest from the annular mounting plate. A cooling inlet is located on one side of the annular distribution pipe, and a cooling outlet is located on one side of the annular outlet pipe.

[0007] Preferably, the installation mechanism includes an installation hole, an installation ring, and a sealing mechanism. The first end plate is provided with an installation hole, the structure of which corresponds to the first adsorption cylinder, the second adsorption cylinder, and the adsorption plate. An installation ring is provided on the side of the first end plate away from the pump housing. An annular installation plate is located inside the installation ring and fixed by bolts. A sealing mechanism is provided between the annular installation plate and the first end plate.

[0008] Preferably, the sealing mechanism includes an inner sealing groove, an outer sealing groove, an inner sealing ring, and an outer sealing ring. The inner sealing groove is provided on the No. 1 end plate inside the mounting hole, and the outer sealing groove is provided on the No. 1 end plate outside the mounting hole. The inner sealing ring is provided on the annular mounting plate inside the first adsorption cylinder, and the outer sealing ring is provided on the annular mounting plate outside the second adsorption cylinder. The inner sealing ring is located inside the inner sealing groove, and the outer sealing ring is located inside the outer sealing groove.

[0009] Preferably, the connecting mechanism includes a mounting head, a connecting rod, and a connecting rod. The mounting head is provided on one side of the first end plate, and the connecting rod is provided in the middle inside the pump housing. One end of the connecting rod is connected to the mounting head, and the radiating baffle is connected to the connecting rod. Several connecting rods are provided between the first end plate and the second end plate, and the connecting rods are connected to the radiating baffle.

[0010] Preferably, the protective mechanism includes a protective cavity, a spiral plate, a medium inlet, and a medium outlet. The protective cavity is formed between the connecting shell and the pump shell. A spiral plate is provided between the connecting shell and the pump shell, and the spiral plate divides the protective cavity into spiral channels. A medium inlet is provided at one end of the connecting shell, and a medium outlet is provided at the other end of the connecting shell. Valves are provided on both the medium inlet and the medium outlet.

[0011] Preferably, the adsorption plate is arranged in a circular cylindrical structure, and the first adsorption cylinder and the second adsorption cylinder are evenly spaced and arranged in a plurality of them.

[0012] Preferably, the outer surface of the pump housing is provided with a protective layer, and the end of the connecting rod away from the mounting head is provided with a distribution seat.

[0013] Compared with the prior art, the beneficial effects of the present invention are: This modular radiation-resistant cryogenic vacuum pump, suitable for deep space exploration, achieves operation through a radiation baffle, adsorption mechanism, and cooling screen installed inside the pump casing. The adsorption mechanism features a cylindrical adsorption plate that works in conjunction with several uniformly distributed first and second adsorption cylinders. The cooling inflow channel in the first adsorption cylinder and the cooling return channel in the second adsorption cylinder enable large-area cooling adsorption inside the modular radiation-resistant cryogenic vacuum pump, with uniform and balanced cooling adsorption area, minimizing cooling adsorption deviation.

[0014] This modular radiation-resistant cryogenic vacuum pump, suitable for deep space exploration, uses mounting holes and mounting rings on the first end plate to cooperate with the annular mounting plates on the first and second adsorption cylinders. The adsorption mechanism is detachable on the modular radiation-resistant cryogenic vacuum pump for deep space exploration. Combined with the sealing grooves and sealing rings, the adsorption mechanism on the cryogenic vacuum pump has good sealing performance.

[0015] This modular radiation-resistant cryogenic vacuum pump, suitable for deep space exploration, achieves a double-shell structure by using a connecting shell placed between the first and second end plates and enclosing the pump housing. A protective cavity is formed between the connecting shell and the pump housing. Combined with the spiral plate inside the protective cavity and the medium inlet and outlet on the connecting shell, the modular radiation-resistant cryogenic vacuum pump housing for deep space exploration provides better internal protection. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 For the present invention Figure 1 Enlarged structural diagram at point A; Figure 3 This is a schematic diagram of the structure of the radiation baffle in this invention; Figure 4 This is a schematic diagram of the structure of the No. 1 end plate in this invention; Figure 5 This is a schematic diagram of the structure of the annular mounting plate in this invention; Figure 6 This is a schematic diagram of the annular distribution pipe in this invention.

[0017] In the diagram: 1. Pump housing; 2. End plate 1; 21. Mounting hole; 22. Mounting ring; 23. Inner sealing groove; 24. Outer sealing groove; 3. End plate 2; 4. Adsorption mechanism; 41. First adsorption cylinder; 42. Second adsorption cylinder; 43. Adsorption plate; 44. Cooling inflow channel; 45. Cooling return channel; 46. Annular mounting plate; 47. Annular distribution pipe; 48. Annular outlet pipe; 49. Cooling inlet; 410. Cooling outlet; 411. Inner sealing ring; 412. Outer sealing ring; 5. Mounting head; 51. Connecting rod; 52. Radiant baffle; 53. Connecting rod; 54. Dispersion seat; 6. Connecting shell; 61. Fixed seat; 62. Protective cavity; 63. Spiral plate; 64. Medium inlet; 65. Medium outlet; 7. Pump inlet; 71. Valve plate; 72. Actuator; 8. Cold shield; 9. Protective layer. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0020] like Figures 1 to 6As shown, this embodiment is applicable to a modular radiation-resistant cryogenic vacuum pump for deep space exploration, including a pump housing 1. One end of the pump housing 1 has a first end plate 2, and the other end has a second end plate 3. A radiation baffle 52 is provided inside the pump housing 1 via a connecting mechanism. An adsorption mechanism 4 is provided inside the pump housing 1 outside the radiation baffle 52. The adsorption mechanism 4 is connected to the first end plate 2 via an installation mechanism. A cold shield 8 is provided inside the pump housing 1 on the side of the adsorption mechanism 4 away from the radiation baffle 52. A connecting shell 6 is provided between the first end plate 2 and the second end plate 3, covering the outside of the pump housing 1. A protective mechanism is provided between the connecting shell 6 and the pump housing 1. The bottom of the connecting shell 6 is provided with a fixed seat 61, and the middle of the second end plate 3 is provided with a pump inlet 7. The inside of the pump inlet 7 is provided with a valve plate 71 through a valve stem. The top of the pump inlet 7 is provided with an actuator 72. The actuator 72 is connected to the valve plate 71 through the valve stem. The cryogenic vacuum pump realizes a double-layer shell structure. The pump shell has a protective structure. The modular anti-radiation cryogenic vacuum pump shell for deep space exploration has better internal protection. The modular anti-radiation cryogenic vacuum pump for deep space exploration has a large area of ​​cooling adsorption inside, and the cooling adsorption area is uniform and balanced. The adsorption mechanism 4 can be detachably installed and sealed on the modular anti-radiation cryogenic vacuum pump for deep space exploration.

[0021] Specifically, the adsorption mechanism 4 includes a first adsorption cylinder 41, a second adsorption cylinder 42, an adsorption plate 43, a cooling inflow channel 44, a cooling return channel 45, an annular mounting plate 46, an annular distribution pipe 47, an annular outlet pipe 48, a cooling inlet 49, and a cooling outlet 410. An adsorption plate 43 is located inside the pump housing 1 between the cold screen 8 and the radiation baffle 52. An annular mounting plate 46 is located at one end of the adsorption plate 43. The first adsorption cylinder 41 is located on the side of the adsorption plate 43 closest to the radiation baffle 52, and the second adsorption cylinder 42 is located on the side of the adsorption plate 43 closest to the cold screen 8. The first adsorption cylinder 41 and the second adsorption cylinder 42 are fixedly connected to the annular mounting plate 46. An annular distribution pipe 47 and an annular outlet pipe 48 are located on the side of the annular mounting plate 46 away from the adsorption plate 43. A cooling inflow channel 49 is located inside the first adsorption cylinder 41. The first adsorption cylinder 41 has a cooling inflow channel 44 and a cooling return channel 45 inside. The cooling inflow channel 44 is connected to the annular distribution pipe 47 and the cooling return channel 45 is connected to the annular outlet pipe 48. A communication port is provided between the annular distribution pipe 47 and the annular outlet pipe 48 at the ends away from the annular mounting plate 46. A cooling inlet 49 is provided on one side of the annular distribution pipe 47 and a cooling outlet 410 is provided on one side of the annular outlet pipe 48. The cooling medium enters the cooling inflow channel 44 of the first adsorption cylinder 41 through the cooling inlet 49 and the annular distribution pipe 47. The cooling medium flows along the cooling inflow channel 44 and enters the cooling return channel 45 of the second adsorption cylinder 42 through the communication port. The cooling medium flows along the cooling return channel 45 and flows out through the cooling outlet 410 on the annular outlet pipe 48 into the cooling medium refrigeration equipment.

[0022] Furthermore, the installation mechanism includes a mounting hole 21, a mounting ring 22, and a sealing mechanism. The first end plate 2 is provided with a mounting hole 21, the structure of which corresponds to the first adsorption cylinder 41, the second adsorption cylinder 42, and the adsorption plate 43. The first end plate 2 is provided with a mounting ring 22 on the side away from the pump housing 1. The annular mounting plate 46 is located inside the mounting ring 22 and fixed by bolts. A sealing mechanism is provided between the annular mounting plate 46 and the first end plate 2. The adsorption mechanism 4 is detachable from the modular radiation-resistant cryogenic vacuum pump for deep space exploration.

[0023] Furthermore, the sealing mechanism includes an inner sealing groove 23, an outer sealing groove 24, an inner sealing ring 411, and an outer sealing ring 412. The inner sealing groove 23 is provided on the first end plate 2 inside the mounting hole 21, and the outer sealing groove 24 is provided on the first end plate 2 outside the mounting hole 21. The inner sealing ring 411 is provided on the annular mounting plate 46 inside the first adsorption cylinder 41, and the outer sealing ring 412 is provided on the annular mounting plate 46 outside the second adsorption cylinder 42. The inner sealing ring 411 is located inside the inner sealing groove 23, and the outer sealing ring 412 is located inside the outer sealing groove 24. The adsorption mechanism 4 on the cryogenic vacuum pump has good double-layer sealing performance.

[0024] Furthermore, the connecting mechanism includes a mounting head 5, a connecting rod 51, and a connecting rod 53. The mounting head 5 is provided on one side of the first end plate 2, and the connecting rod 51 is provided in the middle inside the pump housing 1. One end of the connecting rod 51 is connected to the mounting head 5. The radiating baffle 52 is connected to the connecting rod 51. Several connecting rods 53 are provided between the first end plate 2 and the second end plate 3. The connecting rods 53 are connected to the radiating baffle 52. The connecting rods 53 are supported between the first end plate 2 and the second end plate 3, thereby enhancing the stability of the structure between the first end plate 2 and the second end plate 3.

[0025] Furthermore, the protective mechanism includes a protective cavity 62, a spiral plate 63, a medium inlet 64, and a medium outlet 65. The protective cavity 62 is formed between the connecting shell 6 and the pump housing 1. A spiral plate 63 is provided between the connecting shell 6 and the pump housing 1, dividing the protective cavity 62 into a spiral channel. One end of the connecting shell 6 is provided with a medium inlet 64, and the other end of the connecting shell 6 is provided with a medium outlet 65. Valves are provided on both the medium inlet 64 and the medium outlet 65. The protective medium enters the protective cavity 62 through the medium inlet 64 and flows along the spiral channel divided by the spiral plate 63. The protective medium in the protective cavity 62 flows out through the medium outlet 65.

[0026] Furthermore, the adsorption plate 43 is arranged in a circular cylindrical structure, and several first adsorption cylinders 41 and second adsorption cylinders 42 are evenly spaced. The adsorption plate 43 is made of breathable adsorption material, and the adsorption plate 43, the first adsorption cylinder 41 and the second adsorption cylinder 42 have a large contact area with compressed air inside the pump housing 1.

[0027] Furthermore, the outer surface of the pump housing 1 is provided with a protective layer 9, which provides corrosion protection for the exterior of the pump housing 1. The end of the connecting rod 51 away from the mounting head 5 is provided with a dispersion seat 54. Air is evenly dispersed in all directions through the dispersion seat 54 at the end of the pump inlet 7, and the compressed air is evenly dispersed inside the pump housing 1.

[0028] The usage method of this embodiment is as follows: The adsorption structure composed of the first adsorption cylinder 41, the second adsorption cylinder 42, and the adsorption plate 43 is inserted into the pump housing 1 through the mounting hole 21 on the first end plate 2. The annular mounting plate 46 is installed in the mounting ring 22 and fixed by bolts. The cooling medium enters the cooling inflow channel 44 of the first adsorption cylinder 41 through the cooling inlet 49 and the annular distribution pipe 47. The cooling medium flows along the cooling inflow channel 44 and enters the cooling return channel 45 of the second adsorption cylinder 42 through the connecting port. The cooling medium flows along the cooling return channel 45 and flows out through the cooling outlet 410 on the annular outlet pipe 48 into the cooling medium refrigeration equipment. The compressor compresses the air, and the actuator... The drive valve plate 71 rotates within the pump inlet 7, opening the pump inlet 7. Compressed air enters the pump housing 1 through the pump inlet 7. At the end of the pump inlet 7, the air is dispersed by the dispersion seat 54 on the connecting rod 51 to the radiation baffle 52, the first adsorption cylinder 41, the second adsorption cylinder 42, the adsorption plate 43, and the cold shield 8. The first adsorption cylinder 41, the second adsorption cylinder 42, and the adsorption plate 43 adsorb the compressed air, the cold shield 8 cools the compressed air, and the radiation baffle 52 shields the compressed air from thermal radiation. This enables modular anti-radiation cryogenic vacuum pump operation for deep space exploration. The adsorption mechanism 4 has a circular cylindrical structure adsorption plate 43 and a number of evenly distributed first adsorption cylinders 41, second adsorption cylinders 42, and adsorption plates 43. The adsorption cylinder 42, the cooling inflow channel 44 in the first adsorption cylinder 41, and the cooling return channel 45 in the second adsorption cylinder 42 enable large-area cooling adsorption inside the modular radiation-resistant cryogenic vacuum pump for deep space exploration, and the cooling adsorption area is uniform and balanced. The cooling adsorption deviation of the modular radiation-resistant cryogenic vacuum pump for deep space exploration is corrected by the mounting hole 21 and mounting ring 22 on the first end plate 2, which cooperate with the annular mounting plate 46 on the first adsorption cylinder 41 and the second adsorption cylinder 42. The adsorption mechanism 4 is detachable from the modular radiation-resistant cryogenic vacuum pump for deep space exploration. The inner sealing ring 411 is located inside the inner sealing groove 23, and the outer sealing ring 412 is located in the outer sealing groove. Inside the 24, the adsorption mechanism 4 on the cryogenic vacuum pump is well-sealed. Through the connecting shell 6, which is set between the first end plate 2 and the second end plate 3 and wrapped around the outside of the pump housing 1, the cryogenic vacuum pump achieves a double-layer housing structure. A protective cavity 62 is formed between the connecting shell 6 and the pump housing 1. Combined with the spiral plate 63 set in the protective cavity 62 and the medium inlet 64 and medium outlet 65 set on the connecting shell 6, the protective medium enters the protective cavity 62 through the medium inlet 64 and flows along the spiral channel separated by the spiral plate 63. The protective medium in the protective cavity 62 flows out through the medium outlet 65. The modular radiation-resistant cryogenic vacuum pump housing for deep space exploration provides better protection for the interior.

[0029] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention 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 the present invention should be included within the protection scope of the present invention.

Claims

1. A modular radiation-resistant cryogenic vacuum pump suitable for deep space exploration, comprising a pump housing (1), characterized in that: One end of the pump housing (1) is provided with a first end plate (2), and the other end of the pump housing (1) is provided with a second end plate (3). A radiation baffle (52) is provided inside the pump housing (1) via a connecting mechanism. An adsorption mechanism (4) is provided inside the pump housing (1) outside the radiation baffle (52). The adsorption mechanism (4) is connected to the first end plate (2) via an installation mechanism. A cold shield (8) is provided inside the pump housing (1) on the side of the adsorption mechanism (4) away from the radiation baffle (52). The first end plate (2) and... A connecting shell (6) is provided between the second end plate (3). The connecting shell (6) is wrapped around the outside of the pump housing (1). A protective mechanism is provided between the connecting shell (6) and the pump housing (1). A fixed seat (61) is provided at the bottom of the connecting shell (6). A pump inlet (7) is provided in the middle of the second end plate (3). A valve plate (71) is provided inside the pump inlet (7) through a valve stem. An actuator (72) is provided at the top of the pump inlet (7). The actuator (72) is connected to the valve plate (71) through the valve stem.

2. The modular radiation-resistant cryogenic vacuum pump suitable for deep space exploration according to claim 1, characterized in that: The adsorption mechanism (4) includes a first adsorption cylinder (41), a second adsorption cylinder (42), an adsorption plate (43), a cooling inflow channel (44), a cooling return channel (45), an annular mounting plate (46), an annular distribution pipe (47), an annular outlet pipe (48), a cooling inlet (49), and a cooling outlet (410). An adsorption plate (43) is provided inside the pump housing (1) between the cold screen (8) and the radiation baffle (52). An annular mounting plate (46) is provided at one end of the adsorption plate (43). The first adsorption cylinder (41) is provided on the side of the adsorption plate (43) near the radiation baffle (52), and the second adsorption cylinder (42) is provided on the side of the adsorption plate (43) near the cold screen (8). The first adsorption cylinder (41) and the second adsorption cylinder (42) are connected together. 2) It is fixedly connected to the annular mounting plate (46). The annular mounting plate (46) is provided with an annular distribution pipe (47) and an annular liquid outlet pipe (48) on the side away from the adsorption plate (43). The first adsorption cylinder (41) is provided with a cooling inflow channel (44). The second adsorption cylinder (42) is provided with a cooling return channel (45). The cooling inflow channel (44) is connected to the annular distribution pipe (47). The cooling return channel (45) is connected to the annular liquid outlet pipe (48). A communication port is provided between the annular distribution pipe (47) and the annular liquid outlet pipe (48) at the end away from the annular mounting plate (46). A cooling inlet (49) is provided on one side of the annular distribution pipe (47). A cooling outlet (410) is provided on one side of the annular liquid outlet pipe (48).

3. The modular radiation-resistant cryogenic vacuum pump suitable for deep space exploration according to claim 2, characterized in that: The installation mechanism includes an installation hole (21), an installation ring (22), and a sealing mechanism. The first end plate (2) is provided with an installation hole (21). The structure of the installation hole (21) is corresponding to the first adsorption cylinder (41), the second adsorption cylinder (42), and the adsorption plate (43). The first end plate (2) is provided with an installation ring (22) on the side away from the pump housing (1). The annular installation plate (46) is located inside the installation ring (22) and fixed by bolts. A sealing mechanism is provided between the annular installation plate (46) and the first end plate (2).

4. The modular radiation-resistant cryogenic vacuum pump suitable for deep space exploration according to claim 3, characterized in that: The sealing mechanism includes an inner sealing groove (23), an outer sealing groove (24), an inner sealing ring (411), and an outer sealing ring (412). The inner sealing groove (23) is provided on the first end plate (2) inside the mounting hole (21), and the outer sealing groove (24) is provided on the first end plate (2) outside the mounting hole (21). The inner sealing ring (411) is provided on the annular mounting plate (46) inside the first adsorption cylinder (41), and the outer sealing ring (412) is provided on the annular mounting plate (46) outside the second adsorption cylinder (42). The inner sealing ring (411) is located inside the inner sealing groove (23), and the outer sealing ring (412) is located inside the outer sealing groove (24).

5. The modular radiation-resistant cryogenic vacuum pump suitable for deep space exploration according to claim 1, characterized in that: The connecting mechanism includes a mounting head (5), a connecting rod (51), and a connecting rod (53). The mounting head (5) is provided on one side of the first end plate (2), and the connecting rod (51) is provided in the middle inside the pump housing (1). One end of the connecting rod (51) is connected to the mounting head (5), and the radiation baffle (52) is connected to the connecting rod (51). Several connecting rods (53) are provided between the first end plate (2) and the second end plate (3), and the connecting rods (53) are connected to the radiation baffle (52).

6. The modular radiation-resistant cryogenic vacuum pump suitable for deep space exploration according to claim 1, characterized in that: The protective mechanism includes a protective cavity (62), a spiral plate (63), a medium inlet (64), and a medium outlet (65). The protective cavity (62) is formed between the connecting shell (6) and the pump shell (1). A spiral plate (63) is provided between the connecting shell (6) and the pump shell (1). The spiral plate (63) divides the protective cavity (62) into a spiral channel. A medium inlet (64) is provided at one end of the connecting shell (6), and a medium outlet (65) is provided at the other end of the connecting shell (6). Valves are provided on both the medium inlet (64) and the medium outlet (65).

7. The modular radiation-resistant cryogenic vacuum pump suitable for deep space exploration according to claim 2, characterized in that: The adsorption plate (43) is arranged in a circular cylindrical structure, and the first adsorption cylinder (41) and the second adsorption cylinder (42) are evenly spaced and arranged in a plurality of them.

8. The modular radiation-resistant cryogenic vacuum pump suitable for deep space exploration according to claim 5, characterized in that: The outer surface of the pump housing (1) is provided with a protective layer (9), and the end of the connecting rod (51) away from the mounting head (5) is provided with a distribution seat (54).

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