A Long-Term Observation System for Seabed Heat Flow with a Single Float

Abstract

A single-floating-ball seabed-heat-flow long-term observation system comprises a recovery unit and an abandoning unit. The recovery unit comprises a hollow cabin body and a floating body material component arranged around the hollow cabin body. A cross support which is fixedly connected to a hollow cabin body bottom surface is also included. A hollow cabin body bottom is provided with a water tight joint and a top is provided with a transducer. The abandoning unit comprises a horizontal regular polygon sinking support. A position of each corner of the sinking support is fixedly connected to a rectification component. A center position of the sinking support is provided with a cylindrical cabin, a funnel cabin and a needle-shaped cabin from top to bottom. A top of the cylindrical cabin is provided with a through hole. A balancing weight whose center is provided with a through hole and a buffer space are arranged in the cylindrical cabin. The funnel cabin is fixedly connected to a bottom edge of the cylindrical cabin and covers an upper portion of the needle-shaped cabin. A heat-flow detection component with a temperature sensor is arranged in the needle-shaped cabin. The structure of the observation system is reasonable. The abandoning portion and the recovery portion can be smoothly separated by themselves, and equipment can be recycled furthest.

Description

technical field [0001] The invention relates to the technical field of seabed detection equipment, in particular to a self-floating long-term seabed heat flow observation device for seabed heat flow observation. Background technique [0002] Terrestrial heat flow is the direct display of the earth's internal heat process on the seabed. It is not only the key data to understand the heat loss rate of the earth, but also the basic data to carry out dynamic research and reconstruct the evolution of sedimentary basins, and evaluate the potential of oil, gas and hydrate resources. Seafloor heat flow can be measured by borehole temperature measurement data and seafloor heat flow probes. Due to the limited distribution area of ​​oil drilling and ocean drilling holes, the submarine heat flow probe is easy to carry on board, the operation is relatively flexible, the cost is low, and detailed heat flow measurement can be carried out according to actual scientific problems and sea areas...

AI Technical Summary

Problems solved by technology

There is a contradiction in the process of the system reaching the seafloor to insert sediments, that is, on the one hand, sufficient downward momentum is required for the probe to stably and effectively insert into the sediments, and on the other hand, the reaction force provided by the momentary sediment layer inserted Too large may cause damaging impact on the precision instruments and equipment of the recovery unit above

This contradiction cannot be fully resolved

[0006] 3. In the existing technology, the long-term observation system of seabed heat flow is often designed too large, and it is difficult to operate at sea

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