A gas-excited sample storage container

Abstract

The present invention provides a gas-excited sample storage container. By providing a storage container cavity with a highly elastic flexible door, particles with a certain speed can be collected and sampled. The cavity is designed to have an arc-shaped top, which avoids the formation of a particle flow dead zone and effectively improves the collection and sampling of particles. By designing a separation cavity and an exhaust hole, solid and gas can be effectively separated. The gas velocity passing through the screen does not show a significant decrease, and the screen outlet area is large enough without obvious blockage. By staggering the storage container cavity and the separation cavity up and down and providing a sample transfer channel between the two, the collected samples can be effectively transferred to the separation cavity to prevent the samples from escaping from the storage container cavity and can also be effectively separated in the separation cavity. By designing a guide cup, the sample can be further effectively guided to the bottom of the separation cavity, and other types of samples can also be stored in the cavity of the guide cup.

Description

Technical Field

[0001] The invention belongs to the technical field of small celestial body detection, and in particular relates to a gas excitation sample storage container. Background Art

[0002] The gas-excited sample storage container is an important component of the small celestial body sample sealing subsystem. It is mainly responsible for the storage and gas-solid separation of gas-excited samples. The feasibility and reliability of its scheme directly determine the success or failure of the small celestial body sample sampling and return mission.

[0003] According to the survey results, there is no sample storage container at home and abroad that is suitable for gas-stimulated sample collection, and no container design solution for gas-stimulated sampling has been found. Summary of the invention

[0004] In view of this, an object of the present invention is to provide a gas-stimulated sample storage container, which can meet the requirements of the sample storage container for completing the storage and gas-solid separation of gas-stimulated samples in a space environment.

[0005] A gas-excited sample storage container comprises a flexible door (1), an airflow baffle (2), a storage container cavity (3), a gas-solid separation plate (4), a guide cup (5), a gas-solid separation cavity (6) and a sample transfer channel (7);

[0006] The storage container cavity (3) and the gas-solid separation cavity (6) are staggered at the top and bottom and fixedly connected together; an opening is provided at the bottom of the storage container cavity (3), a flange structure is provided at the opening, and a flexible door (1) is installed; the bottom of the storage container cavity (3) is in the shape of a flat plate and is integrally connected to the arc-shaped top cover at the top, the right side is connected to the gas-solid separation cavity (6), and an opening is provided on the left side and is closed by an airflow baffle (2) to form a cavity;

[0007] The upper and lower surfaces of the gas-solid separation chamber (6) are both open, and the interior is used to accommodate the guide cup (5); the upper edge of the guide cup (5) is fixedly connected to the upper inner wall of the gas-solid separation chamber (6), and the lower edge of the guide cup (5) is fixedly connected to the lower inner wall of the gas-solid separation chamber (6) through the gas-solid separation plate (4), thereby forming a sealed annular cavity between the outer side of the guide cup (5) and the inner wall of the gas-solid separation chamber (6); the side wall of the gas-solid separation chamber (6) is provided with an exhaust hole (8), and the gas-solid separation plate (4) at the bottom of the gas-solid separation chamber (6) is also provided with an exhaust hole (8), so that the annular cavity is connected to the outside;

[0008] The storage container cavity (3) is connected to the gas-solid separation cavity (6) via a sample transfer channel (7); an opening is provided on one side of the bottom plate of the storage container cavity (3) and connected to one end of the sample transfer channel (7); an opening is provided on the lower left side of the gas-solid separation cavity (6) and connected to the other end of the sample transfer channel (7).

[0009] Preferably, the guide cup (5) is a conical cavity with a larger upper end and a smaller lower end, and the annular cavity formed around it is a cavity with a wider upper end and a narrower lower end.

[0010] The present invention has the following beneficial effects:

[0011] The present invention provides a gas-excited sample storage container. By providing a storage container cavity with a highly elastic flexible door, particles with a certain speed can be collected and sampled. The cavity is designed to have an arc-shaped top, which avoids the formation of a particle flow dead zone and effectively improves the collection and sampling of particles. By designing a separation cavity and an exhaust hole, solid and gas can be effectively separated. The gas velocity passing through the screen does not show a significant decrease, and the screen outlet area is large enough without obvious blockage. By staggering the storage container cavity and the separation cavity up and down and providing a sample transfer channel between the two, the collected samples can be effectively transferred to the separation cavity to prevent the samples from escaping from the storage container cavity and can also be effectively separated in the separation cavity. By designing a guide cup, the sample can be further effectively guided to the bottom of the separation cavity, and other types of samples can also be stored in the cavity of the guide cup. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is an axonometric schematic diagram of the gas excitation sample storage container of the present invention;

[0013] Figure 2 It is a structural schematic diagram of the central cross section of the gas excitation sample storage container of the present invention;

[0014] Figure 3 It is a schematic diagram of the structure of the storage container skeleton of the present invention;

[0015] Figure 4 It is a schematic diagram of the flow field calculation model of the sample storage container of the present invention;

[0016] Figure 5 Schematic diagram of sample particle flow and spatial distribution;

[0017] Figure 6 Schematic diagram of gas velocity vector distribution in the inlet cross section at different moments (t=0.5s, 1.0s);

[0018] Figure 7 Schematic diagram of the change of gas velocity at different instants of the screen (t = 0.0s ~ 5.0s);

[0019] Figure 8 It is a structural schematic diagram of the highly elastic flexible door of the present invention in a closed state;

[0020] Fig. 9 It is a structural schematic diagram of the highly elastic flexible door of the present invention in an open state.

[0021] Among them, 1-high elastic flexible door, 2-air flow baffle, 3-storage container cavity, 4-gas-solid separation plate, 5-guide cup, 6-gas-solid separation cavity, 7-sample transfer channel, 8-exhaust hole. DETAILED DESCRIPTION

[0022] The present invention is described in detail below with reference to the accompanying drawings and embodiments.

[0023] The present invention provides a gas-stimulated sample storage container, such as Figure 1 and Figure 2 As shown, it includes a highly elastic flexible door 1, an air flow baffle 2, a storage container cavity 3, a gas-solid separation plate 4, a guide cup 5, a gas-solid separation cavity 6 and a sample transfer channel 7.

[0024] The storage container cavity 3 and the gas-solid separation cavity 6 are staggered up and down and fixedly connected together; the bottom of the storage container cavity 3 is provided with an opening, a flange structure is provided at the opening, and a highly elastic flexible door 1 is installed; Figure 3 and 4 As shown, the bottom of the storage container cavity 3 is flat and integrally connected to the arc-shaped top cover on the upper part. The right side is connected to the gas-solid separation cavity 6, and the left side is provided with an opening which is closed by the airflow baffle 2 to form a cavity.

[0025] The upper and lower surfaces of the gas-solid separation chamber 6 are open, and the interior is used to accommodate the guide cup 5. The upper edge of the guide cup 5 is fixedly connected to the upper inner wall of the gas-solid separation chamber 6, and the lower edge of the guide cup 5 is fixedly connected to the lower inner wall of the gas-solid separation chamber 6 through the gas-solid separation plate 4, thereby forming a sealed annular cavity between the outer side of the guide cup 5 and the inner wall of the gas-solid separation chamber 6; the side wall of the gas-solid separation chamber 6 is provided with an exhaust hole 8, and the gas-solid separation plate 4 at the bottom of the gas-solid separation chamber 6 is also provided with an exhaust hole 8, so that the annular cavity is connected to the outside.

[0026] The storage container cavity 3 is connected to the gas-solid separation cavity 6 through the sample transfer channel 7. Figure 1 As shown, an opening is provided on one side of the bottom plate of the storage container cavity 3, which is connected to one end of the sample transfer channel 7, and an opening is provided on the lower left side of the gas-solid separation cavity 6, which is connected to the other end of the sample transfer channel 7. This structure can form a guiding effect on the gas-solid two-phase sample.

[0027] like Figure 2 As shown, the guide cup 5 is a conical cavity with a large upper end and a small lower end, and the annular cavity formed around it is a cavity that is wide at the upper end and narrow at the lower end.

[0028] The sample storage working process of the gas-excited sample storage container of the present invention is as follows:

[0029] The air blowing tube is inserted upward into the storage container cavity 3, and at the same time, the highly elastic flexible door 1 is opened, and the sample enters the storage container cavity 3 along the air blowing pipeline under the action of gas excitation; the gas-solid two-phase fluid enters the sample transfer channel 7 under the guidance of the arc surface of the storage container cavity 3, and finally enters the gas-solid separation cavity 6; under the guidance of the guide cup 5, the gas-solid two-phase flow moves along a specific flow channel toward the outside of the gas-solid separation cavity 6 and the gas-solid separation plate 4 to perform gas-solid separation; the exhaust holes 8 regularly distributed on the side wall of the gas-solid separation cavity 6 and the gas-solid separation plate 4 separate the sample particles ≥1mm from the sample delivery gas, and the sample is encapsulated inside the storage container.

[0030] After the gas excitation action is completed, the gas blowing tube is pulled out, and at the same time, the highly elastic flexible door 1 is closed to prevent the sample from escaping in the direction of pulling out the tube, thereby completing the sample storage work.

[0031] The present invention designs a reasonable overall configuration to achieve an effective storage space of 355cm for the sample storage container. 3 ; Under extreme working conditions (containing half the sample volume), the rotational inertia of the sample along the rotation axis is minimized, and the impact of the center of mass deviation on the return capsule is less than 0.5mm; the present invention designs a reasonable gas-solid two-phase flow field to achieve ground simulation collection of 500g of samples.

[0032] In summary, the above are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A gas-excited sample storage container, characterized in that: It comprises a flexible door (1), an air flow baffle (2), a storage container cavity (3), a gas-solid separation plate (4), a guide cup (5), a gas-solid separation cavity (6) and a sample transfer channel (7); The storage container cavity (3) and the gas-solid separation cavity (6) are staggered at the top and bottom and fixedly connected together; an opening is provided at the bottom of the storage container cavity (3), a flange structure is provided at the opening, and a flexible door (1) is installed; the bottom of the storage container cavity (3) is in the shape of a flat plate and is integrally connected to the arc-shaped top cover at the top, the right side is connected to the gas-solid separation cavity (6), and an opening is provided on the left side and is closed by an airflow baffle (2) to form a cavity; The upper and lower surfaces of the gas-solid separation chamber (6) are both open, and the interior is used to accommodate the guide cup (5); the upper edge of the guide cup (5) is fixedly connected to the upper inner wall of the gas-solid separation chamber (6), and the lower edge of the guide cup (5) is fixedly connected to the lower inner wall of the gas-solid separation chamber (6) through the gas-solid separation plate (4), thereby forming a sealed annular cavity between the outer side of the guide cup (5) and the inner wall of the gas-solid separation chamber (6); the side wall of the gas-solid separation chamber (6) is provided with exhaust holes (8), and the gas-solid separation plate (4) at the bottom of the gas-solid separation chamber (6) is also provided with regularly distributed exhaust holes (8), so that the annular cavity is connected to the outside; The storage container cavity (3) is connected to the gas-solid separation cavity (6) via a sample transfer channel (7); an opening is provided on one side of the bottom plate of the storage container cavity (3) and connected to one end of the sample transfer channel (7); an opening is provided on the lower left side of the gas-solid separation cavity (6) and connected to the other end of the sample transfer channel (7).

2. A gas-excited sample storage container as claimed in claim 1, characterized in that: The guide cup (5) is a conical cavity with a large upper end and a small lower end, and the annular cavity formed around it is a cavity with a wide upper end and a narrow lower end.

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