Gas-liquid two-phase flow phase change thermal cycle system

Abstract

The invention discloses a gas-liquid two-phase flow phase-inversion heat circulating system. A pure liquid treated by an ion liquid preparation device and a deaerator enters a steam generator to produce saturated steam which enters a steam super-heater through a pressure reducing valve so as to form super-heated hot steam with dryness of 1, the super-heated dry steam is quantitatively humidified by a humidifying desuperheater to form gas-liquid two-phase flow which enters a temperature fine regulator so as to heat to a predetermined temperature and then enters a heat exchanger so as to heat into super-heated steam, the super-heated steam then enters a cooler so as to be completely condensed into liquid, the liquid enters a condensate storage box, the liquid in the condensate storage box is conveyed to the steam generator by virtue of a liquid variable-frequency circulating pump, the steam generator is communicated to the humidifying desuperheater by virtue of a humidifying variable-frequency pump, various sensors are arranged in each link, and an electrical control part is electrically connected with a controller. The gas-liquid two-phase flow phase-inversion heat circulating system has the beneficial effects that the temperature, the pressure, the flow rate and the dryness of the gas-liquid two-phase flow can be precisely controlled and measured.

Description

technical field [0001] The invention belongs to the technical field of thermal parameter measurement and control, and in particular relates to a gas-liquid two-phase flow phase conversion heat cycle system. Background technique [0002] The flow and heat transfer of gas-liquid two-phase flow in pipelines are common phenomena in energy, power and petrochemical equipment. For example, the MSR reheater of a nuclear power plant is a typical phase change heat process of wet steam. In order to understand the flow and heat transfer characteristics of gas-liquid two-phase flow, it is necessary to accurately measure and control the thermal parameters of gas-liquid two-phase flow in real time. [0003] Most of the dry steam now uses flowmeters such as orifice plates and vortex streets to measure the volume flow, and the density compensation method is used to obtain the mass flow of the dry steam. Wet steam density is a function of temperature (or pressure) and saturated steam dryness...

AI Technical Summary

Problems solved by technology

[0007] In addition, due to the limitations of manufacturing and process conditions, in practical applications, the selection range of gas compressors is limited, which has become a difficult problem for high-temperature, high-pressure head, and large-flow gas transportation.

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