Supercritical gas turbine or expander adopting low-temperature working medium and use method

Abstract

The embodiment of the invention provides a supercritical gas turbine or expander adopting a low-temperature working medium and a use method, and belongs to the gas turbine or expander with special purposes. The temperature of gas input by a main steam pipeline of the gas turbine needs to be obviously higher than the critical temperature of the low-temperature working medium; the temperature of dead steam output by an exhaust pipeline of the gas turbine needs to reach or be slightly higher than the critical temperature of the low-temperature working medium; the temperature of the working condition area of the gas turbine is always above the critical temperature of the low-temperature working medium; and the exhaust pipeline of the gas turbine is connected with a dead steam heat regenerator,so that low-temperature liquid output by a low-temperature liquid pump condenses the high-temperature dead steam with critical temperature. In addition, the embodiment of the invention further provides a technical method for shaft end sealing through an outer cylinder body of the gas turbine, so that the problem of leakage of two ends of a rotating shaft of a rotating machine such as the gas turbine or the expansion machine is solved, and particularly, the leakage of the expensive low-temperature working media is avoided. The gas turbine or expander has the advantages of compact structure, small size, low cost, large torque force and the like.

Description

technical field [0001] The invention provides a low-temperature working medium supercritical gas turbine or expander and a use method thereof, which belong to the field of gas turbine machinery and related technical fields. Steam turbine generally refers to a steam turbine. In the embodiment of the present invention, there is no water in the power generation medium, so it is changed to a gas turbine, including but not limited to a gas turbine, a gas motor, a gas turbo expander, a gas screw expander and other similar gas turbines. Flat mechanical equipment; except for gas turbines, other gas turbine mechanical equipment are generally small gas turbines, and the cost is relatively high, and there are relatively few practical applications; gas turbines can be large or small, and the application is relatively Popularity; therefore, the embodiment of the present invention focuses on describing traditional gas turbine equipment, and other gas turbine equipment is similar. Backgrou...

AI Technical Summary

Problems solved by technology

Especially for low-temperature organic working fluid, the cost per ton is as high as 100,000, so the leakage cost of the shaft seal is also quite expensive

Images