A deep-sea power take-off system based on supercritical Rankine cycle

Abstract

The invention discloses a deep-sea power output system based on a supercritical Rankine cycle, belonging to the field of deep-sea power output. A deep-sea power output system based on supercritical Rankine cycle, comprising a submersible body; a turbine connected in the submersible body, wherein the output shaft of the turbine passes through the shell of the submersible body It is connected with a driving impeller; the electrothermal supercritical pressure boiler is connected in the body of the submersible; the system of the present invention uses electric energy to obtain a high-temperature heat source, and uses deep-sea cold water as a low-temperature heat source, and at the same time uses a turbine to directly output the shaft The rankine cycle uses pure water or organic working fluid as the working fluid, and operates under supercritical working conditions. The inlet pressure of the turbine and the deep sea water pressure are balanced, so as to solve the shaft sealing problem of the power output shaft of the turbine. , the new technology proposed by the invention avoids the application defects of the traditional deep-sea power output device.

Description

technical field [0001] The invention relates to the technical field of deep-sea power output, in particular to a deep-sea power output system based on a supercritical Rankine cycle. Background technique [0002] Deep water detector is a kind of intelligent underwater equipment, which is generally deployed in the water within hundreds to thousands of meters through underwater submersibles. use. [0003] The deep-sea power output device currently used is mainly a deep-sea motor. In order to prevent high-pressure seawater from invading the motor, the deep-sea motor adopts an oil-immersed structure and is supplemented by a pressure feedback device. The inside of the motor and the pressure feedback device are filled with hydraulic oil. The inside of the motor and the pressure feedback When the pressure feedback device is connected with the deep-sea seawater pressure, the pressure feedback device will be deformed accordingly, and finally the internal and external pressure of the ...

AI Technical Summary

Problems solved by technology

[0004] However, there are insurmountable defects in the operation of deep-sea motors. Deep-sea motors are powered remotely by shore-based or offshore platforms. Since the transmission lines are usually long, high-voltage transmission is used to reduce energy consumption along the lines; in actual operation, High-voltage direct current and high-voltage alternating current are used for power transmission. During the power transmission process, the following defects will occur: On the one hand, deep-sea motors that use high-voltage direct current transmission need to be connected to a DC converter, which requires high costs, and the DC converter needs to be placed in the Underwater, the reliability is poor; on the other hand, the stability of deep-sea motors using high-voltage AC transmission is poor, and the starting current of the motor can usually reach 5-7 times the normal operating current. Waves can also cause voltage overload on transmission lines; these defects greatly limit the application of deep sea motors

Images