Device for characterizing and testing on-site basic parameter of natural gas hydrate

A device for characterizing and testing an on-site basic parameter of a natural gas hydrate, comprising:

• a servo transmission mechanism, a pressure-resistant manipulator, a sealing mechanism, a data acquisition system, a resistivity testing system, an outlet metering system, and an undisturbed permeability testing module, wherein the sealing mechanism comprises at least a plurality of valve bodies;
• the servo transmission mechanism is sequentially connected to the pressure-resistant manipulator, the resistivity testing system and the outlet metering system, and the resistivity testing system is a multi-channel resistivity testing system, and respectively connected to a pressurizing system and the undisturbed permeability testing module;
• and
• when the device is working, reciprocating motion or rotation of a marine gas hydrate sample in the pressure-resistant manipulator is achieved by the servo transmission mechanism, data changes of pressure, temperature and resistivity of the device are monitored in real time by a pressure acquisition system, a temperature acquisition system and the resistivity testing system, and a permeability of the marine gas hydrate sample is detected in real time by the undisturbed permeability testing module, so as to obtain on-site parameter data of the marine gas hydrate sample.