Systematic device for abyssal sediment pressure-holding transfer

A sediment pressure-holding transfer device, comprising:—a sediment fidelity sampler;

• wherein the sediment pressure-holding transfer device uses a vacuum pump to discharge a gas in the device, uses a high-pressure pump as a power source to perform a pressurization process, uses gravity of a sample to perform a first transfer, and uses a high-pressure impurity pump and a safety valve to perform a second transfer of a sample mixture, in its structure, a high-pressure-resistant and corrosion-resistant material is used as a main material of the device, the device comprises a mechanical system and a hydraulic system, the mechanical system is used as a main frame of the device and is a basis for ensuring operation of the device;
• the hydraulic system is used as a core of the device;
• the mechanical system and the hydraulic system cooperate together to ensure that a sediment sample is smoothly transferred from a sediment sampling cylinder to a culture kettle,
• the sediment fidelity sampler has a volume of ≥150 ml and a height of ≥100 mm, and is connected with the pressure-holding transfer device by using a ball valve thread interface;
• the gas to be discharged refers to air present in a container, and a purpose is to ensure that the sample is not contaminated by other substances in the air during a transfer process, and another purpose is to avoid a danger caused by a poor compression ratio of the gas during the pressurization process;
• and
• the pressurization process refers to a continuous filling of a high-pressure liquid into a corresponding container through a high-pressure pump so that a pressure of the container equals to an in-situ pressure of a seabed sample.