Device for sealing spark sample

Abstract

The invention discloses a device for sealing a spark sample, which is characterized in that a sealing tank body of the device adopts a double-layer design, a main space is used for loading a surface soil sample, and an interlayer space is used for storing a spark surface atmosphere sample and is sealed by electromagnetic valves connected in series; after work is completed, the sealed tank is automatically separated from the fixing frame and the driving mechanism, the detector only needs to carry the sample tank to return, and the return weight is reduced to the maximum extent; the driving mechanism drives the cover body assembly to complete lifting / descending and rotating movement to achieve opening and closing of the sealed tank body. The device for sealing the spark sample has the advantages of being small in size, light in weight, high in reliability, resistant to mechanics, space radiation and surface dust storm, wide in storage and working temperature range and capable of being used under the spark surface environment condition; the device is applied to loading and sealing of soil and atmosphere samples on the surface of Mars in a sampling and packaging subsystem of a Tianzhou No.3 detector.

Description

Technical Field

[0001] This invention belongs to the field of deep space exploration technology, specifically relating to a device for sealing Martian samples. It is applied to the sample sealing device in the sampling and packaging subsystem of the Tianwen-3 probe, and its purpose is to load and seal Martian surface soil and atmospheric samples. Background Technology

[0002] As my country's deep space exploration program progresses, the mission to sample and return Martian soil and atmosphere has entered the development stage. Currently, there is an urgent need for a device capable of loading and sealing Martian soil and atmospheric samples, while also being able to withstand the harsher Martian environment than the Moon, adapting to temperatures ranging from ±130°C, and possessing resistance to mechanical stresses, space radiation, and Martian dust storms. Furthermore, it must be lightweight and highly reliable. Currently, there are no similar products available internationally for reference. Summary of the Invention

[0003] For my country's Mars sample return mission, this invention provides a device for sealing Martian samples. This device can be used under Martian surface environmental conditions, with an applicable temperature range of ±150℃, fully adapting to the Martian surface temperature environment. It also has resistance to mechanical forces, space radiation, and Martian dust storms. It adopts a lightweight design, is small in size, weighs less than 2.5kg, has high reliability, and has a wide storage and operating temperature range.

[0004] To achieve the above objectives, the present invention adopts the following specific technical solution: An apparatus for sealing a Martian sample, the apparatus comprising a fixture, a drive mechanism, a cover assembly, a sealing container assembly, a first detachable electrical connector, and a second detachable electrical connector; The bottom end of the sealed container assembly is mounted to the mounting frame via the first detachable electrical connector; the sealed container assembly includes a sealed container; the sealed container has a double-layer structure, having a main space and an interlayer space; the main space is used to load fire surface soil samples; the interlayer space is used to store fire surface atmospheric samples; the cover assembly is closably and sealingly installed at the top opening of the sealed container; the drive mechanism is fixedly installed on one side of the mounting frame and fixedly connected to the cover assembly via the second detachable electrical connector; During sampling, the drive mechanism drives the cover assembly to lift and rotate, moving the cover assembly away from the sealed container, thus opening the sealed container. After sampling, the drive mechanism drives the cover assembly to rotate and descend, sealing the cover assembly within the sealed container, thus sealing the sealed container. Then, the cover assembly is separated from the drive mechanism via the second detachable electrical connector, and the sealed container assembly is separated from the fixing frame via the first detachable electrical connector.

[0005] Furthermore, the cover assembly includes a locking mechanism and a pyrotechnic device; The pyrotechnic device is used to provide driving force for the locking mechanism; After the drive mechanism drives the cover assembly to descend into place, the pyrotechnic device, which is ignited by electricity, outputs driving force to drive the locking mechanism to move, thereby generating downward pressure on the cover assembly and completing the composite sealing of the sealed tank.

[0006] Furthermore, the sealed tank body and the cover assembly are automatically sealed using a composite sealing method that combines rubber ring sealing and metal extrusion sealing.

[0007] Furthermore, a gas container is provided within the interlayer space.

[0008] Furthermore, the gas container is opened and closed via a series of solenoid valves.

[0009] Furthermore, the drive mechanism includes a motor and a multi-dimensional composite transmission mechanism; The motor is fixedly installed on the fixed frame and is connected to the multi-dimensional composite transmission mechanism for driving the multi-dimensional composite transmission mechanism to realize the rotation and lifting movements of the cover assembly.

[0010] Furthermore, it also includes dust covers; The dust cover covers the outer periphery of the motor.

[0011] Compared with the prior art, the technical solution of the present invention has the following beneficial effects: The sealing container of the device for sealing Martian samples of the present invention has a double-layer design. The main space is used to load Martian surface soil samples, and the interlayer space is used to store Martian surface atmospheric samples and is sealed by a series of solenoid valves. After the operation is completed, the sealing container automatically separates from the fixing frame and the drive mechanism. The probe only needs to carry the sample container back, minimizing the return weight. The opening and closing of the sealing container is achieved by the drive mechanism driving the cover assembly to complete the lifting / lowering and rotation movements. After the cover is closed, the locking mechanism in the cover assembly automatically seals the cover.

[0012] The aforementioned device for sealing Martian samples can meet the requirements of my country's Mars sampling and return mission. It is small in size, lightweight, highly reliable, and has a wide range of storage and operating temperatures. It also has the advantages of being resistant to mechanical forces, space radiation, and Martian dust storms, and can be used under the environmental conditions of the Martian surface. It is applied to the sampling and packaging subsystem of the Tianwen-3 probe to load and seal Martian surface soil and atmospheric samples. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of the device for sealing Martian samples according to the present invention; Figure 2 A schematic diagram showing the cover assembly in the closed position; Figure 3 This is a schematic diagram showing the state of the cover assembly after it has been lifted. Figure 4 This is a schematic diagram showing the state of the cover assembly after rotation. Figure 5 A schematic diagram showing the second separable electrical connector separated from the cover assembly and the sealing can assembly; Figure 6 This is a schematic diagram showing the drive mechanism avoiding the second separable electrical connector after it has separated from the cover assembly. Figure 7 This is a schematic diagram showing the sealed tank assembly being removed from the mounting bracket. Figure 8 This is a schematic diagram of the sealed tank, interlayer space, solenoid valve, and first separable electrical connector of the sealed tank assembly.

[0014] Figure label: 1-Fixed frame, 2-Drive mechanism, 3-First detachable electrical connector, 4-Cover assembly, 5-Sealed tank assembly, 6-Second detachable electrical connector, 7-Dust cover, 51-Sealed tank, 52-Solenoid valve, 53-Gas container. Detailed Implementation

[0015] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0016] In the description of this invention, it should be understood that the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Those skilled in the art can understand the specific meaning of these terms in this invention based on the specific circumstances. Furthermore, in the description of this invention, unless otherwise stated, "multiple" refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. The character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0017] This invention provides a device for sealing Martian samples, such as... Figure 1 and Figure 2 As shown, the device includes a mounting frame 1, a drive mechanism 2, a first detachable electrical connector 3, a cover assembly 4, a sealed container assembly 5, and a second detachable electrical connector 6; wherein: The bottom end of the sealed container assembly 5 is mounted to the mounting bracket 1 via a first detachable electrical connector 3; the sealed container assembly 5 includes a sealed container 51; the sealed container 51 has a double-layer structure, having a main space and an interlayer space; the main space is used to load fire surface soil samples; the interlayer space is used to store fire surface atmospheric samples; such as Figure 8 As shown, the sealed container 51 can be composed of an outer container, an inner container, and a gas container 53 sandwiched between the outer and inner containers. The inner container forms a main space, and the space between the outer and inner containers forms an interlayer space, within which the gas container 53 can be placed. The gas container 53 is opened and closed via a series-connected solenoid valve 52. By using the main space within the sealed container 51 to load the fire-fighting soil sample and the interlayer space to store the fire-fighting atmospheric sample, the effective volume is utilized to the maximum extent. This ensures the loading volume of the soil sample while fully utilizing the edge volume to store the gas sample, achieving a lightweight design.

[0018] The cover assembly 4 is installed at the top opening of the sealed container 51 in a closable and sealing manner. The cover assembly 4 and the sealed container assembly together constitute a sampling container for sealing Martian soil and atmospheric samples. During sampling, the cover assembly 4 is opened to facilitate the placement of the Martian soil sample into the main space. The sealed container 51 and the cover assembly 4 are automatically sealed using a composite sealing method of rubber ring sealing and metal compression sealing.

[0019] The drive mechanism 2 is fixedly installed on one side of the mounting bracket 1 and is fixedly connected to the cover assembly 4 via the second detachable electrical connector 6; the drive mechanism 2 enables the lifting and rotation of the cover assembly 4, such as... Figure 3 and Figure 4As shown, after sampling is completed, the drive mechanism 2 rotates to avoid the sealing container assembly 5, so that the sealing container assembly 5 can be removed from the fixing frame 1 and the sealing container assembly 5 can be separated from the fixing frame 1.

[0020] During sampling, such as Figure 3 and Figure 4 As shown, the drive mechanism 2 drives the cover assembly 4 to lift and rotate, moving the cover assembly 4 away from the sealed container 51. The drive mechanism 2 then drives the cover assembly 4 to move upwards and then rotate, thus opening the sealed container 51. After sampling, the drive mechanism 2 drives the cover assembly 4 to rotate and descend, sealing the cover assembly 4 within the sealed container 51. The drive mechanism 2 then drives the cover assembly 4 to rotate to the top of the sealed container 51 and then descend, thus sealing the container 51. Figure 6 and Figure 7 As shown, the cover assembly 4 is then separated from the drive mechanism 2 via the second detachable electrical connector 6, and the sealed can assembly 5 is separated from the fixing frame 1 via the first detachable electrical connector 3. Figure 7 As shown, the robotic arm removes the sealed tank assembly 5 from the fixed frame 1 after sealing and enters the return process.

[0021] Based on the above-mentioned device for sealing Martian samples, the cover assembly 4 includes a locking mechanism and a pyrotechnic device; the pyrotechnic device is used to provide driving force for the locking mechanism; after the driving mechanism 2 drives the cover assembly 4 to descend into place, the pyrotechnic device, which is ignited by electricity, outputs driving force to drive the locking mechanism to move, thereby generating downward pressure on the cover assembly 4 and completing the composite sealing of the sealed container 51.

[0022] Specifically, the drive mechanism 2 includes a motor and a multi-dimensional composite transmission mechanism; the motor is fixedly installed on the fixed frame 1 and is connected to the multi-dimensional composite transmission mechanism for driving the multi-dimensional composite transmission mechanism to realize the rotation and lifting movements of the cover assembly 4.

[0023] The aforementioned device for sealing Martian samples also includes a dust cover 7; such as Figure 1 As shown, the dust cover 7 covers the outer periphery of the motor.

[0024] The principle of the device for sealing Martian samples described above is as follows: the multi-dimensional composite transmission mechanism in the drive mechanism 2 drives the cover to complete lifting and rotation movements; after the cover is closed, the locking mechanism in the cover assembly 4 automatically seals the cover; the sealing container 51 has a double-layer design, with the main internal space containing Martian surface soil samples and the interlayer space storing Martian surface atmospheric samples, which are sealed by a series solenoid valve 52; after the work is completed, the sealing container 51 automatically separates from the fixing frame 1 and the drive mechanism 2, discarding the remaining mechanisms and removing excess weight, such as... Figure 6 and Figure 7As shown, the detector only carries the sample container back, minimizing the return weight and achieving a lightweight return.

[0025] The aforementioned device for sealing Martian samples can meet the requirements of my country's Mars sampling and return mission. It is small in size, lightweight, highly reliable, and has a wide range of storage and operating temperatures. It also has the advantages of being resistant to mechanical forces, space radiation, and Martian dust storms, and can be used under the environmental conditions of the Martian surface. It is applied to the sampling and packaging subsystem of the Tianwen-3 probe to load and seal Martian surface soil and atmospheric samples.

[0026] The device for sealing Martian samples according to this invention is a sample sealing device used in the sampling and packaging subsystem of the Tianwen-3 probe. Its purpose is to load and seal Martian surface soil and atmospheric samples. Its features include: 1. The sealed container 51 is a double-layer design. The main space is used to load soil samples from the Martian surface; the interlayer space can collect and store atmospheric samples from the Martian surface and is sealed by a series solenoid valve 52.

[0027] 2. A multi-dimensional composite transmission mechanism is adopted, which can complete the lifting and rotation of the cover assembly 4 (when opening the cover) / rotation and lowering (when closing the cover) by a set of motion mechanisms.

[0028] 3. The main space of the sealed container 51 for loading Martian surface soil adopts a composite sealing method of rubber ring sealing and metal extrusion sealing. A locking mechanism on the cover is driven by pyrotechnics, which can realize the automatic sealing and locking function of the cover to the container, achieving a sealing effect with extremely low leakage rate of the sample.

[0029] 4. The modular design is adopted. After the sample is loaded and sealed, the detachable electrical connectors connected to the upper and lower parts of the sealed container 51 are automatically separated, so that the sealed container 51 is separated from the fixed frame 1 and the drive mechanism 2. The robotic arm grabs and puts it into the return device to achieve minimum mass return.

[0030] 5. The device has a wide operating temperature range, capable of being stored and operated in temperatures ranging from -150℃ to 150℃, fully adapting to the surface temperature environment of Mars; it also has resistance to mechanical forces, space radiation, and Martian dust storms, enabling it to be used in the Martian surface environment and is also suitable for other deep space exploration missions.

[0031] Obviously, those skilled in the art can make various modifications and variations to the embodiments of the present invention without departing from the spirit and scope of the invention. Therefore, if these modifications and variations fall within the scope of the claims of the present invention and their equivalents, the present invention also intends to include these modifications and variations.

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

Claims

1. A device for sealing Martian samples, characterized in that, It includes a mounting bracket, a drive mechanism, a cover assembly, a sealed tank assembly, a first detachable electrical connector, and a second detachable electrical connector; The bottom end of the sealed container assembly is mounted to the mounting frame via the first detachable electrical connector; the sealed container assembly includes a sealed container; the sealed container has a double-layer structure, having a main space and an interlayer space; the main space is used to load fire surface soil samples; the interlayer space is used to store fire surface atmospheric samples; the cover assembly is closably and sealingly installed at the top opening of the sealed container; the drive mechanism is fixedly installed on one side of the mounting frame and fixedly connected to the cover assembly via the second detachable electrical connector; During sampling, the drive mechanism drives the cover assembly to lift and rotate, moving the cover assembly away from the sealed container, thus opening the sealed container. After sampling, the drive mechanism drives the cover assembly to rotate and descend, sealing the cover assembly within the sealed container, thus sealing the sealed container. Then, the cover assembly is separated from the drive mechanism via the second detachable electrical connector, and the sealed container assembly is separated from the fixing frame via the first detachable electrical connector.

2. The apparatus for sealing a Martian sample as described in claim 1, characterized in that, The cover assembly includes a locking mechanism and a pyrotechnic device; The pyrotechnic device is used to provide driving force for the locking mechanism; After the drive mechanism drives the cover assembly to descend into place, the pyrotechnic device, which is ignited by electricity, outputs driving force to drive the locking mechanism to move, thereby generating downward pressure on the cover assembly and completing the composite sealing of the sealed tank.

3. The apparatus for sealing a Martian sample as described in claim 2, characterized in that, The sealed tank and the cover assembly are automatically sealed using a composite sealing method that combines rubber ring sealing and metal extrusion sealing.

4. The apparatus for sealing a Martian sample as described in claim 1, characterized in that, A gas container is installed within the interlayer space.

5. The apparatus for sealing a Martian sample as described in claim 4, characterized in that, The gas container is opened and closed via solenoid valves connected in series.

6. The apparatus for sealing a Martian sample as described in any one of claims 1-5, characterized in that, The drive mechanism includes a motor and a multi-dimensional composite transmission mechanism; The motor is fixedly installed on the fixed frame and is connected to the multi-dimensional composite transmission mechanism for driving the multi-dimensional composite transmission mechanism to realize the rotation and lifting movements of the cover assembly.

7. The apparatus for sealing a Martian sample as described in claim 6, characterized in that, It also includes a dust cover; The dust cover covers the outer periphery of the motor.

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