Organic Rankine cycle steam turbine generator unit cooling system adopting ejector

Abstract

The invention relates to an organic Rankine cycle steam turbine generator unit cooling system adopting an ejector. The organic Rankine cycle steam turbine generator unit cooling system comprises an organic Rankine cycle power generation system and a cooling system, and the cooling system is used for cooling in a power generator in the organic Rankine cycle power generation system; the cooling system comprises a water cooling loop and a gaseous state organic working medium cooling loop, and the water cooling loop comprises a cooler, a water tank, a water pump and the power generator which are sequentially connected through cooling water pipes in series; the gaseous state organic working medium cooling loop is an ejector ejection gaseous state organic working medium cooling loop, and the ejector is of a three-way structure provided with three ports which are defined to be a first port, a second port and a third port; and the first port is connected with an inlet of a turbine in parallel, the second port is connected with the power generator, and the third port is communicated with an outlet of the turbine to be connected with the power generator. According to the organic Rankine cycle steam turbine generator unit cooling system, a dual-cooling system including the gaseous state organic working medium cooling loop and the water cooling loop is set, and the power generator is cooled jointly through a gaseous state organic working medium and water.

Description

[0001] Technical field: [0002] The invention belongs to the field of organic Rankine cycle low-temperature waste heat power generation, and in particular relates to a cooling system of an organic Rankine cycle steam turbine generator set using an ejector. [0003] Background technique: [0004] At present, the main reason for the low energy utilization rate is that a large amount of industrial waste heat has not been fully utilized, while the organic Rankine cycle low-temperature waste heat power generation technology uses organic working fluid with a low boiling point as the circulating medium to reduce industrial waste heat (90-300°C) Efficient means of recycling. Traditional generators mostly adopt air-cooled structure, such as the patent name: An air-cooled cooling structure for motors, the authorized announcement number is: CN 203883620U, which introduces that generators generally use air cooling to cool the inside of the generator; the patent name is: a A cooling syste...

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problem that the traditional air-cooled and water-cooled motor cooling methods cannot cool the integrated steam turbine generator set in the organic rankine cycle power generation device, the invention provides an organic rankine cycle steam generator using an ejector. The cooling system of the turbo-generator unit solves the technical problem that organic working fluid gas must be used for the cooling of the integrated turbo-generator unit in the organic Rankine cycle power generation unit by adopting the dual cooling circuit of the gaseous organic working fluid cooling circuit and the water cooling circuit

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