A driving device for pressure-holding transfer of natural gas hydrate core samples

Abstract

The invention relates to the technical field of driving devices, and specifically relates to a driving device for pressure-maintaining transfer of a natural gas hydrate core sample. The driving devicecomprises a temporary storage cylinder, wherein the front end of a transmission gear shaft penetrates out of a front end cover and is connected with a second servo motor, and a gear sleeves the transmission gear shaft; a trapezoidal lead screw is sleeved with a guide groove sleeve, and the front end of the trapezoidal lead screw penetrates out of the front end cover and is connected with a firstservo motor; a sliding block is matched with the trapezoidal lead screw through an internal threaded structure, and the guide groove sleeve penetrates through the sliding block; a first cylindrical support and a second cylindrical support are arranged on the two sides of the sliding block respectively and are connected through a plurality of sliding block support connecting rods; a gear is arranged outside the sliding block, and the gear on the sliding block is meshed with a gear on a grabbing rod shaft; and two auxiliary supporting structures are arranged on the guide groove sleeves on the two sides of a driving sliding block structure respectively. According to the driving device, horizontal pushing can be completed, the rotating action of a core barrel can be completed, and the work ofCT, sound wave detection and the like of the core barrel can be better completed.

Description

technical field [0001] The invention relates to the technical field of driving devices, in particular to a driving device for pressure-holding and transferring of natural gas hydrate core samples. Background technique [0002] With the gradual depletion of non-renewable energy sources such as coal and oil on the earth, natural gas hydrate, which is abundant in marine sediments, is considered to be a clean strategic alternative energy source in the future, and has attracted widespread attention from the international community since the 1980s with attention. However, due to the special physical properties of gas hydrates that exist stably at low temperatures, when the mining core is directly mined to the sea surface at normal temperature and pressure, all or most of the gas hydrate components contained in it will decompose, which cannot reach The purpose of exploration and utilization, and has an important impact on global warming, submarine landslides, marine drilling safet...

AI Technical Summary

Problems solved by technology

The existing core tube transfer drive device can only complete the horizontal push of the core tube; the core is unstable and swings during the horizontal movement; it cannot meet the transfer requirements of longer core samples. Therefore, the existing core tube transfer device is still good. room for improvement

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