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CN-122014562-A - Modularized anti-radiation ultralow temperature vacuum pump suitable for deep space exploration

CN122014562ACN 122014562 ACN122014562 ACN 122014562ACN-122014562-A

Abstract

The invention relates to the technical field of ultralow temperature vacuum pumps, in particular to a modularized radiation-resistant ultralow temperature vacuum pump suitable for deep space exploration, which comprises a pump shell, wherein one end of the pump shell is provided with a first end plate, the other end of the pump shell is provided with a second end plate, the inside of the pump shell is provided with a radiation baffle plate through a connecting mechanism, the inside adsorption mechanism that is equipped with of the outside pump shell of radiation baffle, adsorption mechanism are connected with end plate No. one through installation mechanism, and the inside cold screen that is equipped with of pump shell that radiation baffle one side was kept away from to adsorption mechanism is equipped with the connection shell between end plate No. one and the end plate No. two, and the outside of pump shell is located in the connection shell parcel, is equipped with protection machanism between connection shell and the pump shell. The double-layer shell of the ultralow temperature vacuum pump is provided with a series of structures, the protection structure is provided for the double-layer shell of the ultralow temperature vacuum pump, the protection performance of the pump shell on the inside is good, the large-area cooling adsorption of the inside of the ultralow temperature vacuum pump is uniform and balanced, and the detachable double-layer sealing performance of the adsorption mechanism is good.

Inventors

  • LI WENHUA
  • MEI JIAMING
  • CHEN RUI
  • HU ZHOU
  • Xiao Ziran
  • GUO WANG

Assignees

  • 安徽汉一机电科技有限公司

Dates

Publication Date
20260512
Application Date
20260327

Claims (8)

  1. 1. The modularized anti-radiation ultralow-temperature vacuum pump suitable for deep space exploration comprises a pump housing (1) and is characterized in that one end of the pump housing (1) is provided with a first end plate (2), the other end of the pump housing (1) is provided with a second end plate (3), a radiation baffle plate (52) is arranged in the pump housing (1) through a connecting mechanism, an adsorption mechanism (4) is arranged in the pump housing (1) outside the radiation baffle plate (52), the adsorption mechanism (4) is connected with the first end plate (2) through a mounting mechanism, the adsorption mechanism (4) is far away from the pump housing (1) on one side of the radiation baffle plate (52) and is internally provided with a cold screen (8), a connecting shell (6) is arranged between the first end plate (2) and the second end plate (3), the connecting shell (6) is wrapped on the outer side of the pump housing (1), a protection mechanism is arranged between the connecting shell (6) and the pump housing (1), the bottom of the connecting shell (6) is provided with a fixing seat (61), the middle of the second end plate (3) is provided with a pump inlet (7), the inside the pump housing (7) is provided with a valve plate (72), the actuator (72) is connected to a valve plate (71) via a valve rod.
  2. 2. The modularized anti-radiation ultralow temperature vacuum pump suitable for deep space exploration is characterized in that the adsorption mechanism (4) comprises a first adsorption cylinder (41), a second adsorption cylinder (42), an adsorption plate (43), a cooling inflow channel (44), a cooling reflux channel (45), an annular mounting plate (46), an annular distribution pipe (47), an annular liquid outlet pipe (48), a cooling inlet (49) and a cooling outlet (410), wherein the adsorption plate (43) is arranged in a pump shell (1) between a cold screen (8) and a radiation baffle (52), one end of the adsorption plate (43) is provided with the annular mounting plate (46), one side of the adsorption plate (43) close to the radiation baffle (52) is provided with a first adsorption cylinder (41), one side of the adsorption plate (43) close to the cold screen (8) is provided with the second adsorption cylinder (42), the first adsorption cylinder (41) and the second adsorption cylinder (42) are fixedly connected with the annular mounting plate (46), one side of the annular mounting plate (46) far away from the adsorption plate (43) is provided with the annular distribution pipe (47) and the annular liquid outlet pipe (48), the inside of the first adsorption cylinder (41) is provided with the cooling reflux channel (44), the inside of the cooling reflux channel (44) is provided with the cooling reflux channel (44), the cooling reflux channel (45) is connected with an annular liquid outlet pipe (48), a communication port is arranged between the annular distribution pipe (47) and one end of the annular liquid outlet pipe (48) away from the annular mounting plate (46), a cooling inlet (49) is arranged on one side of the annular distribution pipe (47), and a cooling outlet (410) is arranged on one side of the annular liquid outlet pipe (48).
  3. 3. The modularized radiation-resistant ultralow temperature vacuum pump suitable for deep space exploration according to claim 2, wherein the mounting mechanism comprises a mounting hole (21), a mounting ring (22) and a sealing mechanism, the first end plate (2) is provided with the mounting hole (21), the structure of the mounting hole (21) is correspondingly arranged with the first adsorption cylinder (41), the second adsorption cylinder (42) and the adsorption plate (43), one side of the first end plate (2) far away from the pump shell (1) is provided with the mounting ring (22), the annular mounting plate (46) is arranged in the mounting ring (22) and fixed through bolts, and the sealing mechanism is arranged between the annular mounting plate (46) and the first end plate (2).
  4. 4. The modularized radiation-resistant ultralow temperature vacuum pump suitable for deep space exploration according to claim 3, wherein the sealing mechanism comprises an inner sealing groove (23), an outer sealing groove (24), an inner sealing ring (411) and an outer sealing ring (412), wherein the inner sealing groove (23) is arranged on a first end plate (2) on the inner side of the mounting hole (21), the outer sealing groove (24) is arranged on a first end plate (2) on the outer side of the mounting hole (21), the inner sealing ring (411) is arranged on an annular mounting plate (46) on the inner side of the first adsorption cylinder (41), the outer sealing ring (412) is arranged on an annular mounting plate (46) on the outer side of the second adsorption cylinder (42), the inner sealing ring (411) is arranged in the inner sealing groove (23), and the outer sealing ring (412) is arranged in the outer sealing groove (24).
  5. 5. The modularized radiation-resistant ultralow temperature vacuum pump suitable for deep space exploration is characterized in that the connecting mechanism comprises a mounting head (5), a connecting rod (51) and a connecting rod (53), the mounting head (5) is arranged on one side of a first end plate (2), the connecting rod (51) is arranged in the middle of the inside of the pump shell (1), one end of the connecting rod (51) is connected with the mounting head (5), a radiation baffle (52) is connected with the connecting rod (51), a plurality of connecting rods (53) are arranged between the first end plate (2) and a second end plate (3), and the connecting rods (53) are connected with the radiation baffle (52).
  6. 6. The modularized radiation-resistant ultralow temperature vacuum pump suitable for deep space exploration is characterized in that the protection mechanism comprises a protection cavity (62), a spiral plate (63), a medium inlet (64) and a medium outlet (65), the protection cavity (62) is formed between the connection shell (6) and the pump shell (1), the spiral plate (63) is arranged between the connection shell (6) and the pump shell (1), the protection cavity (62) is divided into spiral channels by the spiral plate (63), the medium inlet (64) is arranged at one end of the connection shell (6), the medium outlet (65) is arranged at the other end of the connection shell (6), and valves are arranged on the medium inlet (64) and the medium outlet (65).
  7. 7. The modularized radiation-resistant ultralow temperature vacuum pump suitable for deep space exploration according to claim 2, wherein the adsorption plates (43) are arranged in a circular cylindrical structure, and a plurality of adsorption cylinders (41) and (42) are uniformly arranged at equal intervals.
  8. 8. The modularized radiation-resistant ultralow temperature vacuum pump suitable for deep space exploration according to claim 5, wherein a protective layer (9) is arranged on the outer surface of the pump shell (1), and a dispersing seat (54) is arranged at one end of the connecting rod (51) far away from the mounting head (5).

Description

Modularized anti-radiation ultralow temperature vacuum pump suitable for deep space exploration Technical Field The invention relates to the technical field of ultralow temperature vacuum pumps, in particular to a modularized radiation-resistant ultralow temperature vacuum pump suitable for deep space exploration. Background The modularized anti-radiation ultralow temperature vacuum pump in the deep space detection is a key device specially designed for an extreme space environment, and aims to maintain the ultrahigh vacuum state of the inside of a detector or an experimental cavity, resist cosmic radiation, adapt to extremely low temperature and support system-level expandability. The key characteristics of the ‌ vacuum pump are characterized in that ‌ is specially designed for deep space environment, wherein a ‌ modularized design ‌ allows pump unit to be flexibly combined according to task requirements, maintenance, upgrading or adaptation to volume constraints of different detectors are facilitated, ‌ radiation resistance ‌ is achieved through selection of radiation hardening electronic components, shielding materials and fault-tolerant circuit designs, stable operation in cosmic ray and solar particle events is guaranteed, and thirdly, ‌ ultra-low temperature adaptability ‌ requires pump body materials and lubricants to maintain structural integrity and vacuum performance in liquid nitrogen or liquid helium temperature areas (such as 20K to 150K) to avoid embrittlement or cold welding, and finally ‌ vacuum performance ‌ is required to reach ultra-high vacuum level to support scientific tasks such as mass spectrometry, low-temperature experiments and the like. At present, the inside adsorption structure that sets up of modularization anti-radiation ultra-low temperature vacuum pump of deep space detection adopts a plurality of adsorption plates to independently set up, exists the interval between a plurality of adsorption plates, and compressed air is concentrated by the pump import and gets into, leads to the adsorption plate to adsorb the area little in ultra-low temperature vacuum pump inside, and compressed air adsorbs incompletely and inhomogeneous in ultra-low temperature vacuum pump to and ultra-low temperature vacuum pump shell adopts the individual layer, and the casing is single to ultra-low temperature vacuum pump inside protective properties, and ultra-low temperature vacuum pump outside use environment changes, and the casing adapts to the protectiveness to external environment changes poor. Disclosure of Invention The invention aims to provide a modularized radiation-resistant ultralow temperature vacuum pump suitable for deep space exploration, so as to solve the problems in the background technology. The modularized radiation-resistant ultralow-temperature vacuum pump comprises a pump shell, wherein one end of the pump shell is provided with a first end plate, the other end of the pump shell is provided with a second end plate, a radiation baffle plate is arranged in the pump shell through a connecting mechanism, an adsorption mechanism is arranged in the pump shell outside the radiation baffle plate and is connected with the first end plate through a mounting mechanism, a cold screen is arranged in the pump shell at one side, far away from the radiation baffle plate, of the adsorption mechanism, a connecting shell is arranged between the first end plate and the second end plate, the connecting shell is wrapped on the outer side of the pump shell, a protection mechanism is arranged between the connecting shell and the pump shell, a fixed seat is arranged at the bottom of the connecting shell, a pump inlet is arranged in the middle of the second end plate, a valve plate is arranged in the pump inlet through a valve rod, an executing mechanism is arranged at the top of the pump inlet, and the executing mechanism is connected with the valve plate through the valve rod. Preferably, the adsorption mechanism comprises a first adsorption cylinder, a second adsorption cylinder, an adsorption plate, a cooling inflow channel, a cooling reflux channel, an annular mounting plate, an annular distribution pipe, an annular liquid outlet pipe, a cooling inlet and a cooling outlet, wherein the adsorption plate is arranged in a pump housing between the cold screen and the radiation baffle, one end of the adsorption plate is provided with the annular mounting plate, one side of the adsorption plate, which is close to the radiation baffle, is provided with the first adsorption cylinder, one side of the adsorption plate, which is close to the cold screen, is provided with the second adsorption cylinder, the first adsorption cylinder and the second adsorption cylinder are fixedly connected with the annular mounting plate, one side of the annular mounting plate, which is far away from the adsorption plate, is provided with the annular distribution pipe and the annular liquid outlet pipe, the cooling inflow cha