Deep sea pressure compensation-type sampling device based on double-piston self-adaptive pressure balance

Abstract

The invention belongs to the technical field of deep sea sampling devices, and discloses a deep sea pressure compensation-type sampling device based on double-piston self-adaptive pressure balance. The deep sea pressure compensation-type sampling device comprises a deep water pump assembly, a first two-position three-way electromagnetic valve connected with the deep water pump assembly, a sampling barrel connected with the first two-position three-way electromagnetic valve, and a second two-position three-way electromagnetic valve, a valve block assembly and an energy accumulator which are connected with the other end of the sampling barrel, wherein the sampling barrel comprises a sealed cabin barrel, a front piston rod capable of moving inside the sealed cabin barrel, a return spring for pushing or limiting movement of the front piston rod, a marine organism filtering membrane assembly and a back piston rod incapable of moving inside the sealed cabin barrel; through holes are formed in the centers of the front piston rod and the back piston rod. Through adoption of the technical scheme, the deep sea pressure compensation-type sampling device can achieve in-situ, concentrated and pressure-maintained sampling of deep sea organisms.

Description

technical field [0001] The patent of the present invention relates to the technical field of sampling devices, in particular to a deep-sea pressure compensation sampling device based on dual-piston self-adaptive pressure balance. Background technique [0002] The vast ocean water body breeds a variety of marine organisms, and organisms in different water layer environments have different living habits. Marine organisms living in the deep sea layer have strong adaptability to the special environment of high pressure, low temperature, and darkness, and have also created their unique life characteristics. The study of deep-sea organisms is helpful for human beings to understand deep-sea resources, study the origin of life, and discover new genes , development of new drugs and environmental protection have far-reaching significance. [0003] The content of marine organisms in deep seawater is low, limited by the volume of the sampling bottle and the pressure holding performance...

AI Technical Summary

Problems solved by technology

[0003] The content of marine organisms in deep seawater is low, limited by the volume of the sampling bottle and the pressure holding performance, the number of samples obtained by a single sampling of the existing sampling device is small and the in-situ characteristics of the samples cannot be guaranteed, which has gradually failed to meet the needs of deep-sea biological research. needs

Before the sampler is put into the specified water depth, the sampling container may be filled with air or other marine organisms in the water layer. The collected samples are easily polluted, and the samples cannot accurately reflect the original composition and state of seawater.

The sealing end cap of the high-pressure vessel is generally connected by bolts. To ensure the strength of the threaded hole and the machining allowance requirements, it is necessary to increase the wall thickness of the vessel, resulting in an increase in the overall weight of the pressure-holding vessel and increasing the cost of lowering and recycling the sampler.

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