超高温阀电气转换装置热力学特性研究

Research on Thermodynamic Characteristics of Electrical Conversion Device for Ultra-temperature Valve

超高温阀的工作介质极限温度可至1000℃,但其电气转换装置对超高温度场较为敏感,保证电气转换装置在正常温度范围内有效工作是超高温阀设计过程中必须解决的难题。为了解决此问题,提出了超高温阀冷却匹配与调节一体化设计方案,以先导驱动的工质作为冷却剂对电气转换装置进行热防护,利用有限元软件建立超高温阀电气转换装置仿真模型,分析冷却剂在不同流量工况下超高温阀电气转换装置的热力学特性,保证超高温阀电气转化装置在正常温度范围内有效工作。

The limit temperature of the working medium of ultra-temperature valve is 1000℃,but the electrical conversion device of the valve is sensitive to ultra-temperature field.It is a difficult problem that must be solved in the design process of ultra-temperature valve to ensure that the electrical conversion device can work effectively within the normal temperature range.In order to solve the problem,an integrated design scheme of cooling and regulation for the ultra-temperature valve is proposed.The Pilot driven working medium is used as coolant for thermal protection of the electrical conversion device.The simulation model of electrical conversion device for ultra-temperature valve is established by Finite Element Software.The thermodynamic characteristics of the electric conversion device for ultra-temperature valve under different coolant flow conditions are analyzed to ensure that the device works effectively within the normal temperature range.