High-purity pressure-maintaining deep sea hot liquid sampler

Abstract

The present invention belongs to the field of marine technological instrument and equipment. One sample barrel with I-shaped sample cavity piston and one pressure accumulating barrel with pressure accumulating cavity piston are fixed to two ends of one containing body with axial small hole separately, to form pressure accumulating cavity, isolated water cavity, pre-sucking cavity and sample cavity. There are one one-way valve mechanism set in front of the sample cavity piston; varying-damp throttle mechanism comprising the throttle rod on pressure accumulating cavity piston and the small hole in the connecting body; valve plate, sampling valve and water sucking pipe in front end of the sample barrel; and inflating valve behind the pressure accumulating barrel. The present invention hashigh sample purity and automatically controlled sample speed, and is suitable for collecting deep sea hot liquid flow sample.

Description

technical field [0001] The invention relates to a deep-sea bottom sampler, in particular to a high-purity pressurized deep-sea hydrothermal sampler. It belongs to the field of marine technical instruments and equipment. Background technique [0002] Submarine hydrothermal fluid is a liquid ejected from fountains distributed in the deep seabed of the ocean. Since the first discovery of submarine hydrothermal fountains in Galapagos Ridge in 1977, scientists have paid great attention to the chemical composition and microorganisms in them. In order to accurately and quantitatively analyze submarine thermal fluid The main chemical, microbial and other components in the liquid need to collect real samples of this liquid on site. In particular, it is required that the samples have high purity and be stored and extracted under pressure. Because most of the submarine hydrothermal fountains are located on the seabed above 1000 meters, the sampling environment has the characteristics ...

AI Technical Summary

Problems solved by technology

It has the characteristics of pressure-holding sampling, storage and extraction, but the sampler has the following three defects: one, before the sampling of the sampler, due to the deep seawater and inclusions pre-filled in the dead volume of the suction pipe and sampling valve as mentioned above Environmental seawater (that is, non-sample seawater) cannot be excluded in advance, and it enters the sample chamber with the sample at the same time during sampling, which affects the purity of the sample; secondly, because the isolated water chamber requires filling of on-site seabed water to prevent residues when the sample chamber piston moves for sampling The medium on the wall of the sample chamber enters the sample, which increases the difficulty of operation, cost and complexity of the sampling process; third, due to the use of a fixed orifice to control the flow rate, as the sampling progresses, the nitrogen pressure in the pressure storage chamber increases , the pressure difference is getting smaller and smaller, which determines the sampling speed is getting slower and slower, affecting the sampling efficiency

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