Core detection based frozen sample cutting sampling device

By using low-temperature nitrogen injection and horizontal rotation cutting in a cryogenic sampling device, the problem of material spillage during core cutting was solved, achieving efficient and stable core cutting and ensuring the accuracy of test data and the lifespan of cutting components.

CN122409236APending Publication Date: 2026-07-17CHINA UNIV OF GEOSCIENCES (BEIJING)
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA UNIV OF GEOSCIENCES (BEIJING)
Filing Date
2026-04-22
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing core cutting devices cut at room temperature, causing volatile or fluid substances inside the core to overflow and be lost, affecting the accuracy of the test data. In addition, the cutting efficiency is low and the saw blade life is short.

Method used

The cryogenic sampling device includes a sealed box, clamping assembly, support assembly, cutting assembly, and freezing module. It forms a closed low-temperature environment by injecting low-temperature nitrogen and cutting horizontally, which suppresses material leakage and improves cutting efficiency.

Benefits of technology

It effectively inhibits the loss of materials inside the core, improves cutting efficiency, extends the life of cutting components, and ensures the accuracy and reliability of test data.

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Abstract

本发明提供了一种基于岩心检测用冷冻切样取样装置，包括密封箱、夹持组件、支撑组件、切割组件以及冷冻模块。密封箱具有密封腔。密封箱的顶端铰接有密封盖。夹持组件与设置在密封箱上的驱动组件相连。支撑组件能够与夹持组件共同对岩心进行支撑。切割组件能够通过切割部对岩心进行分段切割。冷冻模块具有多个喷嘴，各喷嘴均设置在密封腔的内壁处，冷冻模块能够通过各喷嘴向岩心的外壁面喷射低温氮气。本发明提供的基于岩心检测用冷冻切样取样装置能够在切割过程中抵御岩心振动，同时能够在对岩心分切前对岩心进行冷冻，可有效避免岩心内部封存的油、气、水等物质因振动发生迁移、渗出，减少流体流失风险。
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