Throttling and heating coupled steam humidity measuring system and method

• Main Authors: ZHANG BINGZHUO, MENG LIN, WANG SHANSHAN, WU FANG, WANG XIANGYU, XIE HONGJUN, SHAO JIAYE, FAN SHAOHUA, XING ZHAOKAI, YANG JINFENG, LI JIANWEI, XU GUOBIN, WU ZHIGANG
• Format: Patent
• Language: Chinese; English
• Published: 13.12.2022
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; TESTING

The invention discloses a throttling and heating coupled steam humidity measuring system and method. A first steam leading-out pipeline communicated with a steam main pipeline and a second steam leading-out pipeline communicated with the tail end of the first steam leading-out pipeline through a throttling piece are arranged; the air inlet end of the first steam leading-out pipeline is connected with a first pressure measuring device, and a heater is arranged in the first steam leading-out pipeline; meanwhile, a second pressure measuring device, a temperature measuring device and a mass flow meter are connected in the second steam leading-out pipeline, and an exhaust port is formed in the tail end of the second steam leading-out pipeline. The humidity of the flowing saturated steam is calculated by obtaining the saturated gas phase enthalpy and the saturated liquid phase enthalpy of the saturated steam flowing into the first steam leading-out pipeline, the voltage and the current of the heater and the mass fl