A natural environment coupled low-pressure cabin

Abstract

The present invention provides a low-pressure cabin coupled with a natural environment, which relates to the technical field of environmental simulation tests, and includes: a pressure shell, which is the pressure-bearing structure of the outer layer of the low-pressure cabin, and its internal space is the chamber of the low-pressure cabin, an inner insulation layer formed by an inner insulation material is arranged on the inner side thereof, and a sealing panel is arranged on the side of the inner insulation layer away from the pressure shell; a connecting pipe, which is provided with a first end and a second end that are connected to each other, the first end is connected to the sealing panel, and the second end is connected to the pressure shell, the first end extends outward from the outside of the pressure shell, and extends inward from the second end along the outside of the pressure shell, and the first end is connected to the chamber, and the second end is connected to the inner insulation layer, forming a pressure-equalizing passage in which the chamber, the connecting pipe and the inner insulation layer are connected.

Description

Technical Field

[0001] The present invention relates to the technical field of environmental simulation tests, and in particular to a low-pressure cabin. Background Art

[0002] The environment significantly impacts the adaptability and reliability of various equipment, and has a profound impact on human survival, daily life, safety, productivity, health, and comfort. Environmental simulation technology replicates or simulates various natural and induced environments in ground-based test chambers. Within these simulated environments, various environmental tests—such as those on products, equipment, humans, "human-machine" combinations, and "human habitats"—are conducted to study and assess the environmental adaptability and reliability of humans, equipment, and these combinations. Environmental simulation testing is unrestricted by season, day or night, time of day, or location, and can simulate harsh and extreme environments at any time. Consequently, it accounts for over 95% of all environmental testing.

[0003] Low-pressure cabins are mainly used to provide a high-altitude environment for various military or civilian products, equipment, personnel, etc. However, as the requirements for environmental adaptability of products become increasingly higher, the low-pressure cabin needs to be coupled to achieve high and low temperature, rainfall, snowfall and other environments with liquid water. In order to achieve the above coupling function, the low-pressure cabin needs to be equipped with an insulation layer to reduce the installed capacity of the equipment or the initial investment. However, the internal insulation layer method currently used in the low-pressure cabin has many technical problems, such as the insulation layer being damaged by water absorption and freezing and thawing, and being easily deformed in a low-pressure environment. Summary of the Invention

[0004] The purpose of the present invention is to provide a natural environment coupled low-pressure cabin to solve the defects of the current low-pressure cabin insulation method.

[0005] To solve the above problems, the present invention first provides a low-pressure cabin coupled with a natural environment, comprising: a pressure shell, which is the pressure-bearing structure of the outer layer of the low-pressure cabin, and its internal space is the chamber of the low-pressure cabin, an inner insulation layer formed by an inner insulation material is arranged on the inner side thereof, and a sealing panel is arranged on the side of the inner insulation layer away from the pressure shell; a connecting pipe, which is provided with a first end and a second end connected to each other, the first end is connected to the sealing panel, and the second end is connected to the pressure shell, the first end extends outward from the outside of the pressure shell, and extends inward from the second end along the outside of the pressure shell, and the first end is connected to the chamber, and the second end is connected to the inner insulation layer, forming a pressure-equalizing passage connecting the chamber, the connecting pipe and the inner insulation layer.

[0006] In this way, an insulation layer is formed by coating the inside of the pressure shell with insulation material, and a closed panel is used on the other side of the insulation layer to isolate the water vapor in the simulated environment in the chamber. A connecting pipe is provided to connect the chamber and the insulation layer. When the pressure of the chamber and the insulation layer is consistent, the pressure shell is not affected by high and low temperatures and water vapor, which solves the limitations of environmental simulation, expands the simulation range, and provides a basic guarantee for scientific research in related fields.

[0007] Furthermore, transverse reinforcing ribs and longitudinal reinforcing ribs are provided on the inner wall of the pressure-bearing shell. The transverse reinforcing ribs and the longitudinal reinforcing ribs are staggered in a grid shape. The part enclosed by the staggered arrangement of the two is an inner thermal insulation filling area, and an inner thermal insulation layer is provided in the inner thermal insulation filling area.

[0008] Furthermore, a breathable material layer is provided between the inner thermal insulation layer in the inner thermal insulation filling area and the pressure-bearing shell, and the second end is communicated with the breathable material layer.

[0009] Furthermore, a plurality of ventilation holes are provided on the transverse reinforcement ribs and the longitudinal reinforcement ribs.

[0010] Furthermore, the sealing panel is provided with a weld to prevent thermal expansion and contraction.

[0011] Furthermore, a breathable plug is provided on the outside of the first end.

[0012] Furthermore, between the first end and the second end of the connecting pipe, connecting joints are provided at both ends of the extended tube body portion extending outside the pressure-bearing shell, and the extended tube body can be detachably connected to the remaining tube body of the connecting pipe through the connecting joints.

[0013] Furthermore, a portion of the inner tube section of the extension tube body is provided with hygroscopic material, and connecting joints are provided at both ends of the hygroscopic tube section. The hygroscopic tube section is detachably connected to the extension tube body through the connecting joints.

[0014] Furthermore, each inner heat-insulating filling area is correspondingly provided with the connecting pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0016] Figure 1 A schematic diagram of the low-pressure cabin structure provided by an embodiment of the present invention;

[0017] Figure 2 A schematic side view of a low-pressure cabin provided by an embodiment of the present invention;

[0018] Figure 3 Schematic diagram of transverse and longitudinal reinforcement ribs provided in an embodiment of the present invention;

[0019] Figure 4 A cross-sectional view of a low-pressure cabin provided in an embodiment of the present invention.

[0020] Description of reference numerals:

[0021] 100-pressure shell; 101-chamber; 110-transverse reinforcement rib; 111-vent; 120-longitudinal reinforcement rib;

[0022] 200 - inner insulation filling area; 210 - insulation layer; 220 - sealing panel; 221 - weld seam; 230 - breathable material layer;

[0023] 300 - connecting pipe; 310 - first end; 311 - breathable plug; 320 - second end; 330 - extension tube body; 331 - connecting joint; 332 - moisture absorption tube section. DETAILED DESCRIPTION

[0024] In order to make the above-mentioned objects, features and advantages of the present invention more clearly understood, the following detailed description of the specific embodiments of the present invention is given in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0025] Currently, in order to reduce energy consumption, initial investment, and equipment installed capacity, low-pressure chambers typically use external insulation or an unsealed internal insulation layer 210 when simulating high-altitude environments. The external insulation solution uses an insulation layer 210 to wrap the vacuum shell from the outside. The shell directly withstands the low-pressure environment and the water environment. This method can achieve the coupling function, but it comes at a great cost. The main cost is that the shell must be made of stainless steel or other special materials that can withstand high and low temperatures and corrosion. At the same time, the huge heat capacity of the shell steel plate greatly increases the cold and heat load during the high and low temperature conversion process, resulting in an increase in equipment installation and initial investment. The internal insulation layer 210 but not completely sealed solution can partially solve the problems of equipment installed capacity and initial investment, but it cannot isolate the water vapor environment, thereby limiting the realization of the coupling environment in the test chamber, resulting in a shortened service life and increased maintenance costs.

[0026] In order to solve the above problems, the present embodiment provides a low-pressure cabin coupled with a natural environment. The design shape of the low-pressure cabin includes but is not limited to various types of cabins such as square cabins, round cabins or heterogeneous cabins. Of course, the inner wall of the low-pressure cabin of the present invention is not limited to the provision of longitudinal reinforcement ribs 120 and transverse reinforcement ribs 110. The present invention can also be implemented without the provision of longitudinal reinforcement ribs 120 and transverse reinforcement ribs 110. This embodiment takes a square cabin with longitudinal reinforcement ribs 120 and transverse reinforcement ribs 110 as an example for detailed description.

[0027] like Figure 1-4 As shown, the pressure shell 100 is the pressure-bearing structure of the outer layer of the low-pressure cabin, and its internal space is the chamber 101 of the low-pressure cabin. A plurality of staggered longitudinal reinforcement ribs 120 and transverse reinforcement ribs 110 are evenly arranged on the inner wall of the pressure shell 100. The longitudinal reinforcement ribs 120 and the transverse reinforcement ribs 110 are staggered in a grid shape. The space enclosed by the two is the inner insulation filling area 200. An inner insulation layer 210 is added to the inner insulation filling area 200, and a breathable material layer 230 is provided between the inner insulation layer 210 and the inner wall of the pressure shell 100. The inner insulation layer 210 is arranged on the inner side of the breathable material layer 230, that is, on the side away from the pressure shell 100, and a closed panel is provided on the other side of the inner insulation layer 210.

[0028] The material used for the breathable material layer 230 includes, but is not limited to, closed-cell, open-cell, or combined insulation materials. Closed-cell or open-cell materials refer to materials in which the cells are a closed structure surrounded by cell walls and cell edges, with a complete structure and independent, non-interconnected cells. Open-cell materials are defined as closed-cell materials based on the ratio of open-cell to closed-cell structures. Materials with a closed-cell structure of 90% or more are generally defined as closed-cell materials, while those with a closed-cell structure of 90% or more are open-cell materials. Materials used for the sealing panel 220 include, but are not limited to, metal or non-metallic materials.

[0029] Each inner heat-insulating filling area 200 is provided with a connecting pipe 300. Figure 4As shown, the connecting pipe 300 includes a first end 310 and a second end 320 that are connected to each other. The first end 310 is connected to the sealing panel 220. The connection method between the two is not limited, for example, welding, and the pipe mouth of the first end 310 is connected to the chamber 101 of the low-pressure cabin. The first end 310 extends to the outside of the pressure shell 100. In this embodiment, an extension tube body 330 is provided on the outside of the pressure shell 100. The outer edge of the tube body is preferably arranged parallel to the outside of the pressure shell 100. The second end 320 extends inward from the outside of the pressure shell 100, and the second end 320 is connected to the breathable material layer 230. The second end 320 is connected to the pressure shell 100, preferably by welding, so that a passage is formed in which the inner cavity flows through the first end 310 to the inner cavity of the connecting pipe 300, and then the second end 320 is connected to the breathable material layer 230. The breathable material layer 230 is connected to the inner insulation layer 210, so that the pressure of the inner cavity is consistent with that of the inner insulation layer 210.

[0030] During installation, it is preferred to first set a breathable material layer 230 on the inner wall of the pressure shell 100, then install the longitudinal reinforcement ribs 120 and the transverse reinforcement ribs 110, and then install the inner insulation layer 210 in the inner insulation filling area 200 formed therein, and then install the sealing panel 220, and finally complete the installation of the connecting pipe 300.

[0031] Preferably, a breathable plug 311 is installed at the first end 310 of the connecting pipe 300 close to the chamber 101 for ventilation with the low-pressure environment in the chamber 101 of the pressure-bearing shell 100.

[0032] like Figure 3 As shown, it is preferred that a plurality of ventilation holes 111 are provided on both the transverse reinforcement ribs 110 and the longitudinal reinforcement ribs 120 so that different inner insulation filling areas 200 can be interconnected to form a stable pressure-equalizing environment.

[0033] In addition, a weld 221 is provided on the sealing panel 220, which can effectively prevent the sealing panel 220 from being damaged due to thermal expansion and contraction in the simulated environment.

[0034] Preferably, Figure 4 As shown, the extension tube body 330 and the other tube sections of the connecting tube 300 are detachably connected, and connecting joints 331 are provided at both ends of the extension tube body 330 to achieve rapid assembly and disassembly of the two, making it easy to repair or replace the extension tube body 330.

[0035] In addition, a hygroscopic material is provided inside the extension tube body 330, and the hygroscopic tube section 332 installed thereon is also preferably provided with a detachable connection. Similarly, connecting joints 331 are provided at both ends of the hygroscopic tube section 332, making the hygroscopic tube section 332 more convenient to install and disassemble.

[0036] During the test, first, ensure that all ventilation plugs are intact and undamaged. Secondly, check that the connecting pipe 300 and the connecting joint 331 on it are normal. When the pressure shell 100 is opened to high and low temperatures, snowfall, rain and freeze-thaw, if it is necessary to couple the pressure changes caused by the increase or decrease in altitude, the pressure in the pressure shell 100 will be maintained at the same as the air pressure in the inner insulation filling area 200 through the connecting pipe 300. At the same time, it is ensured that the moisture in the air is absorbed by the hygroscopic material in the connecting pipe 300 during the pressure increase and decrease process to avoid being adsorbed by the insulation material and causing the loss of the insulation performance of the inner insulation layer 210, thereby adapting to the natural environment test coupling process at any altitude conditions in the low-pressure cabin.

[0037] Although the present invention is disclosed as above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be based on the scope defined by the claims.

[0038] Finally, it should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article, or device comprising the element.

[0039] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0040] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A natural environment coupled low-pressure cabin, characterized in that: include: The pressure shell (100) is a pressure-bearing structure of the outer layer of the low-pressure cabin, and its internal space is the chamber (101) of the low-pressure cabin. An inner insulation layer (210) formed of an inner insulation material is provided on the inner side of the pressure shell, and a sealing panel (220) is provided on the side of the inner insulation layer (210) facing away from the pressure shell (100); A connecting pipe (300) is provided with a first end (310) and a second end (320) that are connected to each other, wherein the first end (310) is connected to the sealing panel (220), and the second end (320) is connected to the pressure-bearing shell (100), the first end (310) extends outward from the outside of the pressure-bearing shell (100), and extends inward from the second end (320) along the outside of the pressure-bearing shell (100), and the first end (310) is connected to the chamber (101), and the second end (320) is connected to the inner insulation layer (210), thereby forming a pressure-equalizing passage connecting the chamber (101), the connecting pipe (300), and the inner insulation layer (210); Transverse reinforcing ribs (110) and longitudinal reinforcing ribs (120) are provided on the inner wall of the pressure-bearing shell (100), the transverse reinforcing ribs (110) and the longitudinal reinforcing ribs (120) being arranged in a staggered grid pattern, and the portion enclosed by the staggered arrangement of the transverse reinforcing ribs (110) and the longitudinal reinforcing ribs (120) forming an inner thermal insulation filling area (200), wherein an inner thermal insulation layer (210) is provided in the inner thermal insulation filling area (200); A breathable material layer (230) is provided between the inner thermal insulation layer (210) of the inner thermal insulation filling area (200) and the pressure-bearing shell (100), and the second end (320) is in communication with the breathable material layer (230); Between the first end (310) and the second end (320) of the connecting pipe (300), connecting joints (331) are provided at both ends of the portion of the extension tube body (330) extending outside the pressure-bearing shell (100); the extension tube body (330) can be detachably connected to the remaining tube body of the connecting pipe (300) via the connecting joints (331); A partial tube section inside the extension tube body (330) is provided with a hygroscopic material, and connecting joints (331) are provided at both ends of the hygroscopic tube section (332). The hygroscopic tube section (332) is detachably connected to the extension tube body (330) via the connecting joints (331).

2. The natural environment coupled low-pressure cabin according to claim 1, characterized in that: A plurality of ventilation holes (111) are provided on the transverse reinforcement ribs (110) and the longitudinal reinforcement ribs (120).

3. The natural environment coupled low-pressure cabin according to claim 2, characterized in that: The sealing panel (220) is provided with a weld (221) for preventing thermal expansion and contraction.

4. The natural environment coupled low-pressure cabin according to claim 2, characterized in that: A breathable plug (311) is provided on the outside of the first end (310).

5. The natural environment coupled low-pressure cabin according to any one of claims 2 to 4, characterized in that: Each inner heat-insulating filling area (200) is correspondingly provided with the connecting pipe (300).

Images