Indirect air cooling unit steam exhaust utilization device

Abstract

The invention provides an indirect air cooling unit steam exhaust utilization device which is connected to an indirect air cooling unit. The device comprises a steam exhaust leading-out part and a steam exhaust utilization part, wherein the steam exhaust leading-out part comprises a working power steam source channel, a steam exhaust sucking channel and a steam jetting air extractor, and a workingpower steam source inlet, a steam exhaust sucking inlet and an air extractor outlet are formed in the steam jetting air extractor; the air extractor outlet is communicated with the steam exhaust utilization part; a steam discharge opening of a medium-pressure cylinder can be communicated with the working power steam source inlet through the working power steam source channel, and a steam discharging opening of a low-pressure cylinder can be communicated with the steam exhaust sucking inlet through the steam exhaust sucking channel. The device is high in steam exhaust utilization rate and goodin economical efficiency; meanwhile, the steam exhaust pressure of the low-pressure cylinder of a steam turbine is not required to be remarkably improved, the influence on the power generation load of the unit is avoided or small, and the device is beneficial to application and popularization.

Description

Technical field [0001] The invention relates to the technical field of steam turbines, in particular to an exhaust steam utilization device of an indirect air cooling unit. Background technique [0002] The steam turbine exhaust of thermal power unit uses circulating water or air to cool the exhaust steam of the steam turbine, and finally dissipates the heat contained in the exhaust steam of the low pressure cylinder to the air, so as to promote the exhaust steam to condense into condensed water and then participate in the system circulation again. 1) The exhaust steam temperature and pressure of the low-pressure cylinder of the turbo-generator set are low, and the heat carried is too low to be used. 2) In indirect air-cooled units and water-cooled units, because the exhaust steam of the low pressure cylinder of the steam turbine is directly condensed in the condenser, the exhaust steam of the unit cannot be led to the outside of the engine room, and the exhaust steam of the unit...

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Problems solved by technology

[0011] The purpose of the present invention is to provide an indirect air-cooled unit exhaust steam utilization device, which overcomes the problems of poor economy and great influence on the generating load of the unit in the prior art. The utilization rate is high, the economy is good, and at the same time, it does not need to significantly increase the exhaust pressure of the low-pressure cylinder of the steam turbine, and has no or little impact on the power generation load of the unit, which is conducive to popularization and use

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