Microorganism sampler without pressure mutation in deep sea

Abstract

The invention relates to a sampler, and provides a microorganism sampler without pressure mutation in deep sea, which can sample microorganisms in deep sea without pressure mutation. The sampler comprises a sleeve, a piston, a one-way valve and a valve, wherein the piston is arranged in the sleeve; the piston is provided with a piston head and a piston rod, the diameter of the piston head is larger than that of the piston rod, and the piston head and the piston rod are in seal fit in a sliding mode; a seal cavity is formed between the piston and the inner wall of the sleeve; the water outlet end of the single-way valve is fixedly connected with the front end of the sleeve, and the water inlet end of the single-way valve is connected with the valve. The microorganism sampler can sample microorganisms in deep sea without pressure mutation, and has the advantages of very simple structure, very convenient use, low cost and easy popularization.

Description

technical field [0001] The invention relates to a sampler, in particular to a deep-sea pressure-free mutation microbial sampler which can be used in the deep sea. Background technique [0002] The development and utilization of deep-sea genetic resources has become an important channel for the international community to acquire marine resources in recent years. To carry out research on deep-sea genetic resources, it is first necessary to overcome the pressure of tens of megapascals in the deep sea to obtain microbial samples under pressure without pressure mutation. In order to avoid the pollution of shallow sea microorganisms, the existing deep-sea pressure-holding samplers are mostly closed to enter the deep sea, that is, the inner cavity of the sampler is kept at an atmospheric pressure. When the sampler reaches the predetermined depth, the sampling valve of the sampler is opened through program control, and the pressure difference inside and outside the pressure-holding...

AI Technical Summary

Problems solved by technology

[0003] In order to ensure that there are enough water samples, the existing deep-sea samplers without pressure mutations generally have a larger cavity. In order to ensure no pressure mutations, two methods are generally adopted: one is that the pressure vessel is always in the In the open state, such a sampling depth can only reach several hundred meters, and it is difficult to achieve pressure-holding sampling; the second is to use electromagnetic control, oil-immersed motor drive, and pressure compensation to achieve pressure-free sampling. The deep sea sampler has complex structure and high cost, so it is not suitable for popularization and use

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