Humidity measuring device for high-temperature gas cooled reactor

The invention discloses a humidity measuring device for a high-temperature gas cooled reactor, which comprises a gas sampling pipeline, the gas sampling pipeline comprises a sampling inlet, an air cooler, a flow control multi-way valve, a flow instrument and a sampling chamber which are sequentially arranged along the flow direction of gas flow, and the flow control multi-way valve comprises a plurality of electric control valves which are arranged in parallel; a low-temperature heat exchange pipeline of the air cooler is connected with the sampling chamber outlet and the sampling outlet, the sampling inlet is connected with the air cooler through a first pipeline, the sampling outlet is connected with the air cooler through a second pipeline, the first pipeline is communicated with the second pipeline through a third pipeline, and a bypass valve is arranged on the third pipeline. Remote control can be adopted, and on-site maintenance is not needed. Meanwhile, the first pipeline and the second pipeline are co