Natural environment coupled hypobaric chamber

Abstract

The invention provides a natural environment coupled hypobaric chamber, which relates to the technical field of environment simulation test, and comprises a pressure-bearing shell which is a pressure-bearing structure of the outer layer of the hypobaric chamber, the inner space of the pressure-bearing shell is a cavity of the hypobaric chamber, an inner thermal insulation layer formed by an inner thermal insulation material is arranged on the inner side of the pressure-bearing shell, and a sealing panel is arranged on one side, deviating from the pressure-bearing shell, of the inner thermal insulation layer; the communicating pipe is provided with a first end and a second end which are communicated with each other, the first end is connected with the sealing panel, the second end is connected with the pressure-bearing shell, the first end outwards extends out of the outer side of the pressure-bearing shell and inwards extends from the second end along the outer side of the pressure-bearing shell, the first end is communicated with the cavity, and the second end is communicated with the inner thermal insulation layer; and a pressure-equalizing passage for communicating the cavity, the communicating pipe and the inner thermal insulation layer is formed.

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 environmental adaptability and reliability of various equipment have a significant impact on human survival, life, safety, efficient work, health and comfort. Environmental simulation technology is a technology that reproduces or simulates various natural and induced environments in ground test chambers. Various environmental tests are carried out in the simulated environment of this test chamber, such as environmental tests on products, equipment, people, "people + machines" combinations, and "human settlements" to study and assess the environmental adaptability and reliability of people, equipment, and "people + equipment". It is not limited by seasons, day and night, opportunities, and locations, and can simulate harsh and extreme environments at any time, so environmental simulation tests account for more than 95% of all environmental tests.

[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 higher and higher, the low-pressure cabin needs to be coupled to achieve an environment with liquid water such as high and low temperatures, rainfall and snowfall. 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 absorbing water and being damaged by 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 heat preservation method in the low-pressure cabin.

[0005] To solve the above problems, the present invention first provides a natural environment coupled low-pressure cabin, comprising: a pressure shell, which is a pressure-bearing structure of the outer layer of the low-pressure cabin, whose 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, so as to form a pressure-equalizing passage connecting the chamber, the connecting pipe and the inner insulation layer.

[0006] In this arrangement, a thermal insulation layer is formed by coating the inside of the pressure shell with thermal insulation material, and a closed panel is used on the other side of the thermal insulation layer to isolate the water vapor in the simulated environment in the chamber. A connecting pipe that can connect the chamber and the thermal insulation layer is provided to achieve the same pressure between the chamber and the thermal insulation layer. 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 shell, and the transverse reinforcing ribs and the longitudinal reinforcing ribs are staggered and arranged in a grid shape. The part enclosed by the staggered portions 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 reinforcing ribs and the longitudinal reinforcing ribs.

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

[0011] Furthermore, a breathable plug is provided outside 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 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 part of the tube section inside the extension tube body is provided with a hygroscopic material, and connecting joints are provided at both ends of the hygroscopic tube section, and 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 drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

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

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

[0018] Figure 3 A schematic diagram of transverse reinforcing ribs and longitudinal reinforcing 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-bearing shell; 101-chamber; 110-transverse reinforcing ribs; 111-vent; 120-longitudinal reinforcing ribs;

[0022] 200-internal insulation filling area; 210-insulation layer; 220-sealing panel; 221-weld; 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 specific embodiments of the present invention are described in detail below 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 used to limit the present invention.

[0025] At present, in order to reduce energy consumption, reduce initial investment, and reduce equipment installed capacity, low-pressure cabins usually use external insulation or unsealed internal insulation layer 210 when simulating high-altitude environments. The external insulation solution is to use the insulation layer 210 to wrap the vacuum shell from the outside. The shell directly bears the low-pressure environment and the water environment. This method can achieve the coupling function, but it requires a great price. The main reason is that the shell needs to 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 problem 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 cabin, resulting in a shortened service life and an increase in maintenance costs.

[0026] In order to solve the above problems, the present embodiment provides a natural environment coupled low-pressure cabin. 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 longitudinal reinforcement ribs 120 and the transverse reinforcement ribs 110. The present invention can also be implemented without the longitudinal reinforcement ribs 120 and the transverse reinforcement ribs 110. This embodiment takes the square cabin body with the longitudinal reinforcement ribs 120 and the 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 reinforcing ribs 120 and transverse reinforcing ribs 110 are evenly arranged on the inner wall of the pressure shell 100. The longitudinal reinforcing ribs 120 and the transverse reinforcing 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 in 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] Among them, the material package selected for the breathable material layer 230 is used for the thermal insulation material selected for the thermal insulation layer 210 in the breathable support material, including but not limited to closed-cell, open-cell or combined thermal insulation materials. Closed-cell or open-cell materials refer to the closed structure of the pores in the material surrounded by the pore wall and the pore edge, with a complete structure, and the pores are independent of each other and not connected to each other, otherwise they are open-cell. According to the proportion of open-cell structure and closed-cell structure in the material, the material with a closed-cell structure of more than 90% is usually defined as a closed-cell material, and otherwise it is an open-cell material. Material. The material selected for the sealing panel 220 includes but is not limited to metal or non-metallic materials.

[0029] A connecting pipe 300 is provided on each inner heat-insulating filling area 200. 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, such as 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, and 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 install 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 reinforcing ribs 110 and the longitudinal reinforcing ribs 120 so that different inner insulation filling areas 200 can be interconnected to form a stable pressure-equalizing environment.

[0033] In addition, a welding seam 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 a simulated environment.

[0034] Preferably, Figure 4 As shown, the extension tube body 330 and 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, which is convenient for repairing or replacing 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 therein is also preferably configured to be detachably connected. Similarly, connecting joints 331 are provided at both ends of the hygroscopic tube section 332, so that the hygroscopic tube section 332 is more convenient to install and remove.

[0036] During the test, first, make sure all ventilation plugs are intact and free of damage. Secondly, check that the connecting pipe 300 and the connecting joint 331 thereon are in normal condition. When the pressure shell 100 is exposed to high and low temperatures, snow, 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 the same as the air pressure in the inner insulation filling area 200 through the connecting pipe 300. At the same time, ensure 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 insulation performance of the inner insulation layer 210, thereby adapting to the natural environment test coupling process at any altitude 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 protection scope of the present invention shall be subject to the scope defined by the claims.

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

[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 enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be 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 will not be limited to the embodiments shown herein, but rather 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 arranged on the inner side of the pressure shell, and a sealing panel (220) is arranged on the side of the inner insulation layer (210) away from the pressure shell (100); The connecting pipe (300) is provided with a first end (310) and a second end (320) which are connected to each other. 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). The first end (310) is connected to the chamber (101), and the second end (320) is connected to the inner thermal insulation layer (210), so as to form a pressure-equalizing passage connecting the chamber (101), the connecting pipe (300) and the inner thermal insulation layer (210).

2. The natural environment coupled low-pressure cabin according to claim 1, characterized in that: 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) are arranged in a staggered manner in a grid shape; the portion enclosed by the staggered arrangement of the transverse reinforcing ribs (110) is an inner thermal insulation filling area (200); and an inner thermal insulation layer (210) is provided in the inner thermal insulation filling area (200).

3. The natural environment coupled low-pressure cabin according to claim 2, characterized in that: 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).

4. The natural environment coupled low-pressure cabin according to claim 3, characterized in that: A plurality of ventilation holes (111) are provided on the transverse reinforcing ribs (110) and the longitudinal reinforcing ribs (120).

5. The natural environment coupled low-pressure cabin according to claim 4, characterized in that: The sealing panel (220) is provided with a welding seam (221) for preventing thermal expansion and contraction.

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

7. The natural environment coupled low pressure cabin according to claim 4, characterized in that: 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).

8. The natural environment coupled low pressure cabin according to claim 7, characterized in that: The inner tube section of the extension tube body (330) is provided with a hygroscopic material, and both ends of the hygroscopic tube section (332) are provided with connecting joints (331), and the hygroscopic tube section (332) is detachably connected to the extension tube body (330) via the connecting joints (331).

9. The natural environment coupled low-pressure cabin according to any one of claims 2 to 8, characterized in that: Each inner heat-insulating filling area (200) is correspondingly provided with the connecting pipe (300).

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