A barrel-shaped prefabricated shelter building and a combined structure thereof

Abstract

Disclosed are a barrel-shaped assembled shelter building and a combined structure thereof, which comprise a main cylinder, four groups of extensible and outer self-adaptive supporting devices, a supporting device accommodating cavity and an internal space component. The cylinder wall of the main cylinder adopts a three-layer composite shell structure, and the four groups of supporting devices are symmetrically arranged at the bottom of the main cylinder. Each group of supporting devices comprises a telescopic adjusting mechanism and a terrain self-adaptive foot pad, and is provided with a radiation-proof coating on the surface and can be accommodated in the supporting device accommodating cavity. A radiation-proof sealing cover is arranged at the opening of the accommodating cavity. The internal space component comprises a detachable partition and a foldable wall-hung furniture. The three-layer shell functions are layered and coordinated to realize four-protection integration of radiation-proof, heat insulation, air-tightness and air pressure resistance. The supporting devices realize horizontal adjustment and isolation lifting of extraterrestrial rugged terrain through the telescopic adjusting mechanism. The internal space realizes extraterrestrial function adaptation through detachable partitioning and low-gravity fixing mechanism, and can be used for temporary shelter deployment in extraterrestrial space.

Description

Technical Field

[0001] This application relates to the field of building structure technology, and in particular to a cylindrical prefabricated shelter building for use in outer space. Background Technology

[0002] Cylindrical prefabricated housing has become an important form of prefabricated construction due to its uniform stress distribution, good compressive strength, and ease of transportation and assembly. Chinese patent CN117231042A discloses a cylindrical housing unit and a prefabricated building containing the housing unit. This design includes a cylindrical outer shell, a base plate fixed within the inner cavity, reinforcing beams, and a support device housed within a support device cavity. However, the cylindrical outer shell in this design is a single-layer structure, lacking radiation protection, heat insulation, and pressure resistance capabilities. Its sealing performance is insufficient, making it unable to maintain internal pressure in a vacuum environment. The support device is designed only for typical Earth terrain, lacking corrosion and radiation protection treatments, making it unsuitable for stable operation in rugged terrain. The internal space is also designed only for Earth's human habitation needs, without considering functional adaptation to low-gravity environments. The root cause of these defects lies in the fact that the outer shell material system and support structure are designed based on the typical Earth surface environment, without incorporating protective mechanisms against extreme extraterrestrial conditions such as vacuum, extreme temperature differences (-183℃ to 127℃), and strong particle radiation. Summary of the Invention

[0003] The purpose of this invention is to provide a cylindrical prefabricated shelter building and its combined structure, so as to at least partially solve the following technical problems existing in the prior art: the outer shell of the existing cylindrical prefabricated housing is a single-layer structure, which does not have the ability to prevent radiation, heat insulation and air pressure resistance, and the sealing performance is insufficient, making it impossible to maintain internal air pressure in a vacuum environment; the support device can only be adapted to the conventional terrain of the earth, and has not been treated for corrosion and radiation protection, so it cannot work stably in the rugged terrain of extraterrestrial areas; the internal space design is only for the needs of human habitation on earth, and has not considered the functional adaptation in low gravity environments, so it cannot meet the emergency use needs of temporary shelter in extraterrestrial areas.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] This invention provides a cylindrical prefabricated shelter for use in outer space, comprising a main cylinder, four sets of retractable adaptive support devices for outer space, a support device housing cavity, and internal space components. The main cylinder's wall adopts a three-layer composite shell structure, comprising an outer layer, a middle layer, and an inner layer. The outer layer is a composite structure of a metal substrate and a radiation-shielding coating, the radiation-shielding coating covering the outer surface of the metal substrate and configured to shield against outer space particle radiation and resist corrosion. The middle layer is a heat-insulating composite structure located inside the outer layer and configured to block heat transfer between the inner and outer sides of the shell, resisting extreme temperature differences outside the Earth. The inner layer is a composite structure of a pressure-bearing lining and a sealing filler material located inside the middle layer, the gap between the pressure-bearing lining and the middle layer being filled by the sealing filler material, configured to maintain an airtight seal between the inner cavity and the external vacuum environment. Four sets of support devices are symmetrically arranged at the bottom of the main cylinder. Each set of support devices includes a telescopic adjustment mechanism, the bottom end of which is connected to a terrain-adaptive foot pad. The surface of the support device is coated with an anti-radiation coating and configured to adjust the level of the main cylinder within a preset tilt range and raise the main cylinder to a preset height to adapt to rugged terrain such as the moon and Mars. A support device receiving cavity is located at the bottom of the main cylinder, and the support device can be stored in the cavity. The opening of the receiving cavity is equipped with an anti-radiation sealing cover to protect the support device inside from radiation damage during transportation or when not in operation. The internal space component is located within the inner cavity of the main cylinder and includes a removable partition and folding wall-mounted furniture. The removable partition divides the inner cavity into multiple functional areas, and the folding wall-mounted furniture has a low-gravity fixing structure configured to constrain the position of objects in a low-gravity environment to prevent them from floating.

[0006] Through the aforementioned three-layer composite shell structure, the outer radiation-proof coating and the metal substrate work together to form a radiation shield and structural rigidity barrier; the middle thermal insulation composite structure blocks heat conduction and convection; and the inner pressure-bearing lining and sealing filling material together form an airtight cavity. The three layers work together to achieve the integration of four protective functions—radiation protection, thermal insulation, airtightness, and air pressure resistance—under the constraint of lightweight design. The support device compensates for terrain height differences through a telescopic adjustment mechanism and achieves stable contact on rugged ground with terrain-adaptive foot pads. The surface radiation-proof coating ensures the long-term durability of the support structure in extraterrestrial radiation environments. The internal space components achieve extraterrestrial functional adaptation within a limited cylindrical space through flexible partitioning with removable partitions and low-gravity fixing mechanisms for folding wall-mounted furniture.

[0007] Furthermore, the outer metal substrate is a titanium alloy sheet, and the radiation-shielding coating is a boron-containing ceramic coating with a temperature resistance range of -200℃ to 350℃. The titanium alloy sheet provides excellent structural rigidity and lightweight characteristics, while the boron in the boron-containing ceramic coating has extremely strong neutron absorption capacity, effectively shielding against strong particle radiation from outer space. Simultaneously, the coating has a wide temperature resistance range, adapting to extreme temperature differences in outer space environments.

[0008] Furthermore, the thermal insulation composite structure includes a vacuum insulation panel and a ceramic fiber reinforced insulation layer, which are stacked along the thickness direction of the cylinder wall. The vacuum insulation panel blocks heat transfer by eliminating the medium of heat conduction and heat convection, while the ceramic fiber reinforced insulation layer further blocks radiative heat transfer. The combination of the two forms a highly efficient wide-temperature-range thermal insulation mechanism, which can effectively resist extreme temperature differences from -183℃ to 127℃.

[0009] Specifically, the pressure-bearing liner is a stainless steel liner, and the sealing filler material is a high-temperature resistant sealant. The stainless steel liner provides high strength resistance to internal pressure, and the high-temperature resistant sealant fills all gaps between the stainless steel liner and adjacent structural layers, eliminating gas leakage paths, achieving extremely high airtightness, and ensuring stable maintenance of internal survival pressure in a vacuum environment.

[0010] Preferably, the overall areal density of the three-layer composite shell structure is no greater than 8 kg / m². This areal density constraint effectively controls the overall weight of the structure while ensuring multiple protective functions, reducing launch and transportation costs, and achieving a balance between lightweighting and protective performance.

[0011] Furthermore, the telescopic adjustment mechanism includes a titanium alloy damping rod and a hydraulic telescopic support column, which are connected in series along the support direction. The hydraulic telescopic support column compensates for the terrain height difference between each support point by changing its length, while the titanium alloy damping rod absorbs terrain impact loads. The two work together in series to achieve a stable and reliable terrain adaptive leveling function.

[0012] Furthermore, the support device is configured to adjust the level of the main cylinder within a ±30° tilt range and raise the main cylinder by 0.8 meters to 1.2 meters. The ±30° adjustment range can cover most terrain undulations on the surfaces of extraterrestrial bodies such as the Moon and Mars, and the 0.8-1.2-meter elevation effectively prevents the main cylinder from directly contacting the extraterrestrial soil, blocking heat conduction between the soil and the structure and reducing the risk of soil corrosion.

[0013] Preferably, the radiation-shielding sealing cover is made of titanium alloy, and its surface is coated with a boron-containing ceramic coating. The titanium alloy provides high-strength structural support, while the boron-containing ceramic coating achieves radiation shielding, ensuring reliable radiation protection for the support device's accommodating cavity when it is closed.

[0014] Furthermore, the detachable partition is detachably connected to the inner wall of the main cylinder via a magnetic structure. This magnetic connection method allows for tool-free installation and removal of the partition, making it convenient and allowing for flexible re-division of functional areas according to shelter requirements, adapting to different emergency scenarios and spatial usage logic.

[0015] Furthermore, the multiple functional areas include a rest area, a simple supply area, and a refuge area, with the refuge area located in the middle of the main cylinder. This location in the middle of the main cylinder allows for full utilization of the maximum protective thickness and structural rigidity of the outer shell, serving as a core protective area to ensure personnel safety in extreme situations.

[0016] Furthermore, the folding wall-mounted furniture includes at least one of a folding bed, a worktable, and a storage cabinet, and the low-gravity fixing structure is a snap-locking structure. The folding wall-mounted design allows for storage against the inner wall in the folded state, maximizing the use of the limited cylindrical space; the snap-locking structure uses mechanical locking to restrain items in a fixed position, effectively preventing items from floating in low-gravity or zero-gravity environments and ensuring safe use.

[0017] In some embodiments, cable and pipeline channels are pre-installed on the inner wall of the main cylinder, and these channels extend along the inner wall of the main cylinder. The cable and pipeline channels extend along pre-set wiring grooves on the inner wall, without occupying effective protective space within the cavity, thus achieving an integrated layout of the functional system and the interior space, and improving space utilization efficiency.

[0018] This invention also provides a cylindrical prefabricated shelter building assembly structure, comprising at least two of the aforementioned cylindrical prefabricated shelter buildings and a nested sealing connection component. The nested sealing connection component is disposed at the mating edge of the main cylindrical sections of adjacent cylindrical prefabricated shelter buildings. The nested sealing connection component includes a positioning element, a locking element, and a sealing element. Adjacent main cylindrical sections are airtightly connected through the nested sealing connection component. Through the nested sealing connection component, multiple cylindrical units can be quickly and airtightly assembled into a continuous shelter building to adapt to different scales of off-ground accommodation needs, achieving modular expansion.

[0019] Specifically, the positioning component is a titanium alloy base, the locking component is a titanium alloy snap-fit ​​seat, and the sealing component is a fixing seat. The titanium alloy base provides a precise docking positioning reference, the titanium alloy snap-fit ​​seat achieves rigid locking of adjacent units, and the fixing seat, together with the sealing ring, completes the airtight sealing of the docking seam. The three components work together to achieve rapid airtight splicing between units.

[0020] In some embodiments, at least one of the main cylindrical bodies is connected to an airlock, which is a dual-chamber series structure. The airlock is equipped with a leak detection device and a pressure balancing device. The dual-chamber series structure achieves a stepped air pressure transition during personnel entry and exit through two-stage air pressure buffer chambers. The leak detection device monitors the sealing status of each stage in real time, and the pressure balancing device dynamically adjusts the air pressure inside the airlock during personnel entry and exit, thereby maintaining stable air pressure within the main cylindrical body and ensuring personnel safety.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. By designing the main cylindrical wall as a three-layer composite shell structure, the outer metal substrate and radiation-proof coating work together to form a radiation shield and structural rigidity barrier, the middle heat-insulating composite structure blocks heat conduction and heat convection, and the inner pressure-bearing lining and sealing filling material together form an airtight cavity. The three functional layers work together in a layered manner. Under the constraint of lightweight construction with an overall surface density of no more than 8kg / m², it simultaneously achieves the integration of four protection functions: radiation protection, heat insulation, airtightness, and air pressure resistance. This completely solves the fundamental defects of existing cylindrical prefabricated residential shells, such as lack of external protection capability and poor sealing performance. It enables the sheltered building to have the ability to work stably for a long time in environments with external vacuum, extreme temperature differences (-183℃ to 127℃), and strong particle radiation.

[0023] 2. By symmetrically setting four sets of retractable external adaptive support devices at the bottom of the main cylinder, the telescopic adjustment mechanism of the support devices can compensate for terrain height differences within a ±30° tilt range and achieve leveling of the main cylinder. The terrain-adaptive foot pads adapt to irregular ground contact. The support devices are raised by 0.8 to 1.2 meters to create an isolation gap between the bottom of the building and the external soil. The radiation-proof coating on the surface of the support devices ensures their long-term durability in the external radiation environment. The support devices can be completely stored in the containment cavity and sealed with a radiation-proof sealing cover. This solves the technical problems of existing support devices that are only suitable for conventional terrain, lack radiation protection treatment, and have no protection when stored. It achieves stable deployment and full-state radiation protection in rugged terrain.

[0024] 3. By setting up removable partitions in the inner cavity, the space can be flexibly divided into a rest area, a simple supply area, and a refuge area. The refuge area is centrally located to make full use of the maximum protective thickness in the middle of the cylinder. Folding wall-mounted furniture, combined with a snap-locking structure, maximizes space utilization while preventing items from floating in low gravity environments. Nested sealing connection components enable rapid airtight assembly of multiple units, solving the technical problems of existing cylindrical prefabricated houses lacking external functional adaptation design and unable to be modularly expanded. This achieves full-scene functional adaptation and flexible large-scale deployment of temporary external shelter. Attached Figure Description

[0025] Figure 1 A schematic diagram of the overall prefabricated cross-section structure of the cylindrical prefabricated shelter building is shown.

[0026] Figure 2 A perspective diagram showing the modular functional zoning and furniture arrangement of the interior space components in a cylindrical prefabricated shelter building is provided.

[0027] Figure 3 A schematic diagram showing the connection of multiple main cylindrical bodies is shown.

[0028] Explanation of reference numerals in the attached drawings: 1. Main cylinder; 2. External adaptive support system; 3. Support device housing cavity; 4. Connecting component; 5. Internal space component; 51. Removable partition; 52. Folding wall-mounted furniture; 6. Chamber partition. Detailed Implementation

[0029] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the following embodiments are used to illustrate the technical solutions of the present application, and are not intended to limit the scope of protection of the present application.

[0030] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the following embodiments are used to illustrate the technical solutions of the present application, and are not intended to limit the scope of protection of the present application.

[0031] This application provides a cylindrical prefabricated shelter building for use in outer space. Addressing the technical problems of existing cylindrical prefabricated residential shells lacking outer-space protection capabilities, support devices unable to adapt to rugged terrain, and internal spaces lacking outer-space functional adaptation designs, this application transforms the cylindrical shell into a three-layered, functionally coordinated composite shell structure. It incorporates a retractable, outer-space adaptive support device at the bottom of the main cylinder and detachable partitions and folding wall-mounted furniture within the interior cavity, achieving full-scene adaptability for temporary outer-space shelter. The following description will focus on the structural and assembly relationship of the three-layered composite shell, the working mechanism and state switching of the outer-space adaptive support system, the zoning and fixing relationship of internal space components, and the coordination relationship between multi-unit nested connections and airlock compartments.

[0032] Figure 1 A schematic diagram of the overall prefabricated cross-sectional structure of a cylindrical prefabricated shelter building is shown, illustrating the three-layer composite shell structure of the main cylindrical body 1 and the spatial relationship between the support devices and the support device receiving cavity 3 in the external adaptive support system 2. In one embodiment, the cylindrical prefabricated shelter building includes a main cylindrical body, four sets of retractable external adaptive support devices, support device receiving cavities, and internal space components. The main cylindrical body is a rigid shell with a cylindrical cross-section, and its wall adopts a three-layer composite shell structure, which includes an outer layer, a middle layer, and an inner layer from the outside to the inside. The four sets of retractable external adaptive support devices are symmetrically arranged at the bottom of the main cylindrical body, the support device receiving cavities are located at the bottom of the main cylindrical body and correspond to the storage positions of each set of support devices, and the internal space components are located in the inner cavity of the main cylindrical body.

[0033] The outer layer is a composite structure of a metal substrate and a radiation-shielding coating. The metal substrate forms the outermost structural layer of the cylindrical shell, providing overall structural rigidity. The radiation-shielding coating covers the entire outer surface of the metal substrate, adhering tightly to it, and is configured to shield against extraterrestrial particle radiation and resist corrosion. In one embodiment, the metal substrate is a titanium alloy sheet, and the radiation-shielding coating is a boron-containing ceramic coating. The boron element in the boron-containing ceramic coating has extremely strong neutron absorption capacity, which can effectively shield against strong particle radiation. The temperature resistance range of the boron-containing ceramic coating is -200℃ to 350℃, which can adapt to extreme temperature differences in extraterrestrial environments. The titanium alloy sheet ensures structural rigidity while also meeting the requirements for lightweight design, and together with the boron-containing ceramic coating, it forms a composite barrier of radiation protection and structural rigidity.

[0034] The middle layer is a thermal insulation composite structure, located inside the outer layer and in contact with its inner surface. It is configured to block heat transfer between the inner and outer sides of the outer shell, resisting extreme temperature differences from Earth. In one embodiment, the thermal insulation composite structure includes a vacuum insulation panel and a ceramic fiber reinforced insulation layer, which are sequentially stacked from the outside to the inside along the thickness direction of the cylinder wall on the inner side of the outer layer. The vacuum insulation panel blocks heat transfer by eliminating heat conduction and convection, while the ceramic fiber reinforced insulation layer further blocks radiative heat transfer. The combined structure forms a highly efficient thermal insulation mechanism, effectively resisting extreme temperature differences from Earth (-183°C to 127°C) and maintaining a stable internal cavity temperature.

[0035] The inner layer is a composite structure of a pressure-bearing liner and a sealing filler material, located inside the middle layer. The gap between the pressure-bearing liner and the middle layer is filled with the sealing filler material, configured to maintain an airtight seal between the inner cavity and the external vacuum environment. In one embodiment, the pressure-bearing liner is a stainless steel liner, which is attached to the inner surface of the middle layer, providing high strength resistance to internal pressure and withstanding the thrust of the internal survival gas pressure towards the external vacuum environment. The sealing filler material is a high-temperature resistant sealant, which fills all gaps between the stainless steel liner and the middle layer, eliminating gas leakage paths and achieving extremely high airtightness, ensuring stable maintenance of internal gas pressure in a vacuum environment.

[0036] In the three-layer composite shell structure, the outer, middle, and inner layers are bonded together using a combination of high-temperature bonding and mechanical fastening to form an integrated composite structure. All seams between layers are filled with high-temperature resistant sealant to ensure no gas leakage paths between layers. The three layers work synergistically: the outer radiation-shielding coating and the metal substrate form a radiation shield and structural rigidity barrier; the middle thermal insulation composite structure blocks heat conduction and convection; and the inner pressure-bearing lining and sealing filler material form an airtight cavity. Under the constraint of a lightweight design with an overall surface density not exceeding 8 kg / m², this structure simultaneously integrates four protective functions: radiation protection, thermal insulation, airtightness, and pressure resistance.

[0037] In some embodiments, four sets of retractable adaptive support devices are symmetrically distributed at the bottom of the main cylinder. Each set of support devices includes a telescopic adjustment mechanism, the bottom end of which is connected to a terrain-adaptive foot pad. The surface of the support device is coated with an anti-radiation coating. In one specific embodiment, the telescopic adjustment mechanism includes a titanium alloy damping rod and a hydraulic telescopic support column. The titanium alloy damping rod and the hydraulic telescopic support column are connected in series along the support direction, and the bottom end of the hydraulic telescopic support column is connected to the terrain-adaptive foot pad. The hydraulic telescopic support column compensates for the terrain height difference between each support point by changing the column length. The titanium alloy damping rod absorbs the terrain impact load, and the terrain-adaptive foot pad forms an adaptive fit with the irregular ground surface. The three work together to enable the four sets of support devices to adjust the level of the main cylinder within a ±30° tilt range and raise the main cylinder as a whole by 0.8 meters to 1.2 meters. This creates an isolation gap between the bottom of the main cylinder and the external soil, preventing direct contact between the bottom and the external soil, blocking direct heat conduction between the soil and the building, and reducing the risk of soil corrosion.

[0038] The entire surface of the support device is coated with an anti-radiation coating to shield the metal structure from radiation damage caused by particle radiation when the support device is in operation. In one embodiment, the anti-radiation coating is a boron-containing ceramic coating. The boron-containing ceramic coating shields the outer space particle radiation through the neutron absorption effect of boron, protecting the metal structure of the support device from radiation damage.

[0039] The support device receiving cavity is located at the bottom of the main cylinder. A chamber partition 6 divides the internal space of the main cylinder 1 into two parts: the lower support device receiving cavity 3 and the upper space for accommodating the internal space components 5. In the retracted state, the hydraulic telescopic support column is fully retracted, and the entire support device is housed within the support device receiving cavity 3. A radiation-proof sealing cover is provided at the opening of the receiving cavity, covering and sealing the opening to prevent radiation damage to the support device inside the receiving cavity. In the working state, the radiation-proof sealing cover opens, the support device extends from the receiving cavity, and the hydraulic telescopic support column extends to a preset length, working in conjunction with a titanium alloy damping rod and terrain-adaptive foot pads to achieve terrain adaptation and leveling. In one embodiment, the radiation-proof sealing cover is made of titanium alloy, and its surface is coated with a boron-containing ceramic coating, providing reliable radiation protection for the support device in the retracted state.

[0040] Reference Figure 2 , Figure 2 The illustration shows a perspective view of the modular functional zoning and furniture arrangement of the interior space components in a cylindrical prefabricated shelter building. It demonstrates how the removable partition 51 divides the interior cavity into a rest area, a simple supply area, and a refuge area, and shows the installation positions of the folding wall-mounted furniture 52 on the inner walls of each functional area. In another embodiment, the interior space components are located within the interior cavity of the main cylinder and include removable partitions and folding wall-mounted furniture. The removable partitions are detachably connected to the inner wall of the main cylinder, dividing the interior cavity into multiple functional areas; the folding wall-mounted furniture is fixed to the inner wall of the main cylinder via wall-mounted connectors and features a low-gravity fixing structure.

[0041] In one embodiment, the detachable partition is detachably connected to the inner wall of the main cylinder via a magnetic attraction structure. The magnetic attraction structure is located at the corresponding positions of the edge of the detachable partition and the inner wall of the main cylinder, and the partition is detachably fixed to the inner wall by magnetic attraction. When it is necessary to re-divide the functional areas, the partition can be removed from the inner wall by applying external force to overcome the magnetic attraction force, without tools, making the operation convenient.

[0042] The facility comprises multiple functional areas, including a rest area, a basic supply area, and a shelter area, with the shelter located in the center of the main cylindrical structure. This central layout leverages the maximum protective thickness of the central outer shell within the overall structure, making the shelter the core protected area and ensuring personnel safety in extreme situations. The rest area and basic supply area are located on either side of the shelter, following the usage logic of an extraterrestrial emergency shelter.

[0043] Folding wall-mounted furniture includes at least one of a folding bed, a worktable, and a storage cabinet, each piece of furniture being fixed to the inner wall of the main cylindrical body via wall-mounting connectors. The folding bed, worktable, and storage cabinet provide functionality when unfolded, and when folded, they fit snugly against the inner wall for storage, maximizing the use of the limited cylindrical space. The low-gravity fixing structure is a snap-locking structure, located on the item placement surface or fixed position of the folding wall-mounted furniture. In low-gravity or zero-gravity environments, the snap-locking structure mechanically locks the items in place, preventing them from floating and ensuring safety. Because the snap-locking structure and the folding wall-mounted furniture form a mechanical locking relationship, items are restrained by the snap-locking structure in low-gravity conditions, maintaining a stable position and effectively solving the problem of items floating in low-gravity environments.

[0044] The inner wall of the main cylinder has reserved channels for cables and pipelines. The cables and pipelines extend along the inner wall of the main cylinder and are set in the pre-set cable trays in the inner wall, without occupying the effective protection space of the inner cavity, thus realizing the integrated layout of the functional system and the interior space.

[0045] refer to Figure 3 , Figure 3 A schematic diagram of multiple main cylindrical structures connected is shown. In another embodiment, multiple cylindrical prefabricated shelter buildings can be airtightly connected by nested sealing connection components 4 to form a cylindrical prefabricated shelter building assembly structure. The nested sealing connection components are set at the mating edges of adjacent main cylindrical structures and include positioning elements, locking elements, and sealing elements. Adjacent main cylindrical structures are airtightly connected by the nested sealing connection components. In one embodiment, the positioning element is a titanium alloy base, the locking element is a titanium alloy fastening seat, and the sealing element is a fixing seat. During assembly, the titanium alloy base is set on the lower side of the mating edges of adjacent main cylindrical structures, providing a precise mating positioning reference so that adjacent units are aligned and nested along the axial direction; the titanium alloy fastening seat is set around the outer periphery of the mating seam and forms a snap-fit ​​connection with the outer walls of the two main cylindrical structures to achieve rigid locking of adjacent units; the fixing seat, in conjunction with the sealing ring, is set at the mating seam, and the gas leakage path of the mating seam is sealed by pressing the sealing ring, thus completing the airtight sealing of the mating seam. The three work together to enable rapid and airtight assembly of adjacent cylindrical units. Multiple units can be nested and combined as needed to form a continuous shelter building to meet the needs of different scales of extraterrestrial dwelling.

[0046] In some embodiments, at least one airlock is connected to the main cylinder. The airlock is a dual-chamber tandem structure, equipped with a leak detection device and a pressure balancing device. The airlock is connected to the end of the main cylinder via a nested sealing connection assembly, forming an airtight connection. The dual-chamber tandem structure consists of an inner chamber and an outer chamber arranged sequentially along the personnel passage direction. The inner chamber communicates with the inner cavity of the main cylinder, while the outer chamber communicates with the external environment. A sealed partition door separates the inner and outer chambers. When personnel enter, they first enter the outer chamber and close the outer chamber door. The pressure balancing device inflates the outer chamber until its pressure reaches the same level as the inner chamber. Then, the inner chamber door is opened to enter the inner cavity of the main cylinder. When personnel leave, the operation sequence is reversed. The pressure in the outer chamber is reduced to a level comparable to the external environment by the pressure balancing device before the outer chamber door is opened. The leak detection device monitors the sealing status of each level of the airlock's sealing structure in real time, issuing an early warning when an abnormal seal occurs to prevent the inner cavity pressure from dropping due to seal failure. Because the dual-chamber series structure achieves a stepped air pressure transition when personnel enter and exit through two-stage air pressure buffer chambers, the air pressure inside the main cylinder remains stable throughout the entire entry and exit process, ensuring the safety of personnel entering and exiting.

[0047] It is understood that, without altering the functional layered and collaborative protection mechanism of the aforementioned three-layer composite shell, the outer metal substrate is not limited to titanium alloy thin plates, and the radiation-shielding coating is not limited to boron-containing ceramic coatings; any layer capable of providing radiation shielding and corrosion resistance is sufficient. The middle layer's thermal insulation composite structure is not limited to a combination of vacuum insulation panels and ceramic fiber-reinforced insulation layers; any layer capable of effectively blocking heat transfer under extreme temperature differences is sufficient. The inner pressure-bearing lining is not limited to stainless steel linings, and the sealing filling material is not limited to high-temperature resistant sealant; any layer capable of maintaining an airtight seal between the inner cavity and the external vacuum environment is sufficient. It is understood that the detachable connection method of the detachable partition is not limited to a magnetic structure; any layer capable of repeatedly detaching and fixing the partition to the inner wall of the main cylinder and dividing the inner cavity into multiple functional areas is sufficient. The low-gravity fixing structure is not limited to a snap-fit ​​fixing structure; any structure capable of restraining the position of objects in a low-gravity environment to prevent floating is sufficient. Where there is no conflict, the technical features of the aforementioned embodiments can be combined with each other.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A cylindrical prefabricated shelter building for use in outer space, characterized in that, include: The main cylindrical body has a three-layer composite shell structure, comprising an outer layer, a middle layer, and an inner layer. The outer layer is a composite structure of a metal substrate and a radiation-shielding coating, with the radiation-shielding coating covering the outer surface of the metal substrate. The middle layer is a heat-insulating composite structure located inside the outer layer. The inner layer is a composite structure of a pressure-bearing lining and a sealing filler material, located inside the middle layer. The gap between the pressure-bearing lining and the middle layer is filled by the sealing filler material. Four sets of retractable adaptive support devices are symmetrically arranged at the bottom of the main cylinder. Each set of support devices includes a telescopic adjustment mechanism. The bottom end of the telescopic adjustment mechanism is connected to a terrain-adaptive foot pad. The surface of the support device is provided with an anti-radiation coating. A support device receiving cavity is located at the bottom of the main cylinder, and the support device can be housed in the support device receiving cavity. The opening of the support device receiving cavity is provided with a radiation-proof sealing cap. An internal space component is disposed in the inner cavity of the main cylinder. The internal space component includes a removable partition and folding wall-mounted furniture. The removable partition divides the inner cavity into multiple functional areas, and the folding wall-mounted furniture is provided with a low-gravity fixing structure.

2. The cylindrical prefabricated shelter building according to claim 1, characterized in that, The outer metal substrate is a titanium alloy sheet, the radiation-proof coating is a boron-containing ceramic coating, and the temperature resistance range of the outer layer is -200℃ to 350℃.

3. The cylindrical prefabricated shelter building according to claim 1, characterized in that, The thermal insulation composite structure includes a vacuum insulation plate and a ceramic fiber reinforced insulation layer, which are stacked along the thickness direction of the cylinder wall; the pressure-bearing lining is a stainless steel lining, and the sealing filling material is a high-temperature resistant sealant.

4. The cylindrical prefabricated shelter building according to claim 1, characterized in that, The telescopic adjustment mechanism includes a titanium alloy damping rod and a hydraulic telescopic support column. The support device is configured to adjust the level of the main cylinder within a ±30° tilt range and raise the main cylinder by 0.8 meters to 1.2 meters.

5. The cylindrical prefabricated shelter building according to claim 1, characterized in that, The radiation shielding cover is made of titanium alloy, and its surface is coated with a boron-containing ceramic coating.

6. The cylindrical prefabricated shelter building according to claim 1, characterized in that, The detachable partition is detachably connected to the inner wall of the main cylinder via a magnetic attraction structure.

7. The cylindrical prefabricated shelter building according to claim 1, characterized in that, The multiple functional areas include a rest area, a simple supply area, and a refuge area, with the refuge area located in the middle of the main cylinder.

8. The cylindrical prefabricated shelter building according to claim 1, characterized in that, The folding wall-mounted furniture includes at least one of a folding bed, a workbench, and a storage cabinet, and the low-gravity fixing structure is a snap-on fixing structure.

9. A cylindrical prefabricated shelter building assembly structure, characterized in that, include: At least two prefabricated cylindrical sheltered buildings as described in any one of claims 1 to 8; as well as A nested sealing connection assembly is disposed at the mating edge of the main cylinder of the adjacent cylindrical prefabricated shelter building. The nested sealing connection assembly includes a positioning element, a locking element, and a sealing element. The adjacent main cylinders are airtightly connected through the nested sealing connection assembly.

10. The cylindrical prefabricated shelter building assembly structure according to claim 9, characterized in that, At least one of the main cylindrical bodies is connected to an airlock chamber, which is a double-chamber series structure, and the airlock chamber is equipped with a leak detection device and a pressure balancing device.

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