CN-118150257-B - Device for continuously extracting ice core gas and synchronously collecting water body and application method

CN118150257BCN 118150257 BCN118150257 BCN 118150257BCN-118150257-B

Abstract

The invention discloses a device for continuously extracting ice core gas and synchronously collecting water and a use method thereof. The device comprises a sample containing shell, wherein a sample pushing mechanism is arranged at the closed end of the sample containing shell, a transparent sealing cover is arranged at the open end of the sample containing shell, and an ice melting component is arranged in the sealing cover. The sample sealing sleeve comprises a transparent soft sleeve, the closed end of the soft sleeve is arranged in the sample containing shell and is connected with a sample pushing mechanism penetrating through the closed end of the sample containing shell, and the open end of the soft sleeve extends out. After the sealing cover is buckled with the sample containing shell, the part of the soft sleeve in the sample containing shell and the sealing cover form a sealing cavity for containing the ice core. The ice core moves towards the ice melting component under the pushing action of the sample pushing mechanism and is melted by the ice melting component. The sample containing shell and the sealing cover are provided with purging pipes, the sealing cover is provided with a gas inlet pipe and a drain pipe, and the drain pipe is connected with the water collecting component. The invention realizes the continuous extraction of gas samples and the synchronous collection of water samples aiming at the whole ice core.

Inventors

LI JIULE
XU BAIQING
WU HUAYING

Assignees

中国科学院青藏高原研究所

Dates

Publication Date: 20260508
Application Date: 20240229

Claims (10)

1. A device for continuously extracting ice core gas and synchronously collecting water is characterized by comprising a sample containing shell, a sample sealing sleeve, a sample pushing mechanism, a sealing cover and a water collecting component, wherein the transparent sample containing shell is in a rectangular shape with one end open and the other end closed, the sample pushing mechanism is installed at the closed end of the sample containing shell, the transparent sealing cover is detachably buckled at the open end of the sample containing shell, an ice melting part is installed in the sealing cover, the sample sealing sleeve comprises a soft sleeve made of transparent plastic material, one end of the soft sleeve is closed, the other end of the soft sleeve is open, the sealing end of the soft sleeve is arranged in the sample containing shell and is connected with the sample pushing mechanism which movably penetrates through the sealing end of the sample containing shell, and the open end of the soft sleeve extends out of the sample containing shell and is clamped between the sample containing shell, so that after the sealing cover is connected with the sample containing shell, the soft sleeve is positioned in the sealing cover and the sample containing shell, the sealing cover is detachably buckled with the sealing cover, the ice melting part is installed in the sealing cover, the sealing cover can be pushed to the water collecting component to the water body, and the sealing cover can be pushed to the water collecting component to the outside, and the sealing cover is arranged on the sealing cover, and the water collecting component can be pushed to the ice core, and the sealing component can be blown to the water under the sealing component.
2. The device for continuous extraction and synchronous collection of ice core gas and water body according to claim 1, wherein a base plate is fixed inside the closed end of the soft sleeve, a push rod is arranged on the base plate, and the base plate is connected with the sample pushing mechanism.
3. The apparatus for continuous extraction of ice core gas and synchronous collection of water body according to claim 2, wherein the sample pushing mechanism comprises a motor, an output shaft of the motor is connected with one end of a connecting round rod through a single traction rope, the other end of the connecting round rod is connected with one end of a push rod, and the other end of the push rod movably penetrates through the closed end of the sample accommodating shell and is connected with the substrate after the soft sleeve.
4. The device for continuously extracting ice core gas and synchronously collecting water body according to claim 3, wherein the purging pipes comprise a first purging pipe and a second purging pipe, the push rod is a hollow pipe, the first purging pipe is exposed outside after passing through the inner cavity of the push rod, the soft sleeve and the base plate, the second purging pipe is arranged on the sealing cover, and the first purging pipe and the second purging pipe are connected with an inert gas storage tank through the same purging valve.
5. The apparatus for continuous extraction of ice core gas and simultaneous collection of water of claim 1, wherein said ice-melting element is a heat-generating plate mounted within said cover opposite the closed end of said sample-receiving shell.
6. The device for continuous extraction and synchronous collection of ice core gas and water according to claim 5, wherein a clamping groove is arranged at the cover opening of the cover, and the clamping groove is used for enabling the cover to be buckled with the open end of the sample accommodating shell in a tight fit manner.
7. The apparatus for continuous extraction and synchronous collection of ice core gas and water according to claim 5, wherein the water collecting member comprises a conical collecting bottle, a bottle mouth of the collecting bottle is detachably screwed and fixed with the drain pipe, a gas purging pipe is connected to the bottom of the collecting bottle, a purging switch is arranged on the gas purging pipe, and a drain switch is arranged on a portion of the drain pipe exposed outside the sealing cover.
8. The device for continuous extraction and synchronous collection of ice core gas and water according to claim 7, wherein the part of the drain pipe between the self screw joint and the drain switch is connected with an air outlet pipe, and the air outlet pipe is provided with an air outlet switch.
9. The device for continuous extraction and synchronous collection of ice core gas and water according to any one of claims 1 to 8, wherein a plurality of strip-shaped guide bars are arranged in the sample accommodating shell at intervals, and the length direction of the guide bars is consistent with the direction in which the sample pushing mechanism pushes the ice core to move.
10. A method of using the apparatus for continuous extraction of ice core gas and simultaneous collection of water according to any one of claims 1 to 9, comprising the steps of: 1) Putting the whole cylindrical ice core into the soft sleeve, and putting the ice core and the soft sleeve together into the sample accommodating shell; 2) The sealing cover is loosely buckled on the sample containing shell, wherein a part of the soft sleeve extends out and is positioned between the sealing cover and the sample containing shell; 3) Pushing the ice core to move by the sample pushing mechanism, and stopping pushing when eyes observe that the end surface of the ice core to be melted contacts the ice melting component; 4) Pressing the sealing cover to enable the sealing cover to be fastened on the sample containing shell, so that the ice core is positioned in the sealing cavity; 5) Introducing inert gas into the sealing cavity and the water body collecting component communicated with the sealing cavity to enable the ice core to be in a pure inert gas environment; 6) Stopping introducing inert gas into the water body collecting component, and reducing the flow of the inert gas which is continuously introduced into the sealed cavity to the sample injection flow; 7) The ice melting component is heated, the sample pushing mechanism is used for continuously pushing the ice core to move in the sealing cavity according to the set melting speed, so that the end face of the ice core to be melted is melted continuously, gas released after the ice core is melted is sent into a gas analysis instrument, and water formed after the ice core is melted flows into the water collecting component; 8) And (5) completing continuous extraction of ice core gas and synchronous collection of water.

Description

Device for continuously extracting ice core gas and synchronously collecting water body and application method Technical Field The invention relates to a device for continuously extracting ice core gas and synchronously collecting water and a use method thereof, belonging to the technical field of ice core experimental equipment. Background The ice core refers to a cylindrical ice body sample taken from the surface layer of the glacier vertically to a certain depth inside the glacier. The ice body of each layer of each ice core contains a large amount of information of the climates and the environmental conditions of glaciers when the ice cores are formed, and the information is regional and has a wide global climate and environmental condition representation. Therefore, the ice core climate record research can reveal the historical period area and even global climate environment change, and particularly, a gas sample sealed in the ice core is the natural atmosphere sealed in the ice body in the process of converting the grain snow on the surface of glaciers into ice, and is a direct carrier for knowing the composition and change of the historic atmosphere components in the historical period. Therefore, the extraction, analysis and research of the ice core gas in different areas and different time scales are helpful to recover the basic trend and the inter-area difference of the atmospheric component change in the area and the global scope, so as to investigate the basic composition pattern and the evolution characteristic of the area or the global climate environment. The extraction and analysis of gases from ice cores began in the last eighties of the last century, with swiss, france and the united states being the earliest countries. In recent years, the analysis and measurement technology of the gas in the ice core in China has initial effect and is continuously perfected. At present, two main methods for extracting gas from ice cores are a wet extraction method and a dry extraction method, wherein the wet extraction method is used for analyzing gas components by melting ice core samples under different temperatures and container atmosphere conditions and releasing the gas in the ice bodies. Dry extraction is a process in which the ice core sample is crushed under low temperature conditions while remaining in a solid state to release the gas from the ice core for analysis. Currently, wet extraction is widely used by most laboratories, while dry extraction is less useful. For a widely-applied wet extraction method, the current experiment is carried out by cutting an entire ice core of about 1 meter along the length direction of the ice core, intercepting every 2-5 cm into one sample, and then extracting gas from the intercepted samples one by one. It can be found from practical experiments that the above method can cause loss of precious ice samples between adjacent samples in the cutting process, and the cutting mode can also cause the sealed bubbles on the end face of each sample to be cut, or cause the increase of the crushing degree of the sample itself, so that the loss of the sealed gas samples in the ice core is caused, and the waste of the samples is serious. In addition, the repeated gas extraction process of a plurality of samples is complex in operation, low in experimental efficiency and free from continuity in gas sample acquisition. In view of this, in order to continuously, efficiently and conveniently perform extraction of a gas sample in an ice core for analysis, so as to better assist in performing ice core climate record research, and improve the global climate environment change research depth, it is necessary to design a device suitable for continuously extracting a gas sample in an ice core. Disclosure of Invention The invention aims to provide a device for continuously extracting gas from an ice core and synchronously collecting water and a use method thereof, and aims to realize continuous extraction of gas samples and synchronous collection of water samples for the whole ice core, so that the problem of sample waste is avoided, and the device is beneficial to research development. In order to achieve the above purpose, the present invention adopts the following technical scheme: The device for continuously extracting ice core gas and synchronously collecting water comprises a sample containing shell, a sample sealing sleeve, a sample pushing mechanism, a sealing cover and a water collecting component, wherein the transparent sample containing shell is in a rectangular shape with one end open and the other end closed, the sealing cover is detachably fastened to the open end of the sample containing shell, an ice melting part is arranged in the sealing cover, the sample sealing sleeve comprises a soft sleeve made of transparent plastic material, one end of the soft sleeve is closed and the other end of the soft sleeve is open, the sealing cover is arranged in the sample containing