Primary loop humidity measuring device for high-temperature gas cooled reactor

Abstract

The invention provides a primary loop humidity measuring device for a high temperature gas cooled reactor, which comprises a sampling chamber, an air cooling temperature adjusting device, a filter assembly and a flow adjusting assembly, a temperature sensor and a hygrograph sensor are arranged in the sampling chamber, and the air cooling temperature adjusting device is used for adjusting the temperature of gas entering the sampling chamber; the flow adjusting assembly adjusts the flow of gas entering the sampling chamber. The device has the beneficial effects that the efficiency of the heat exchanger does not need to be manually adjusted and controlled, and the temperature of helium entering the sampling chamber can be automatically adjusted; and a water-cooling coil pipe is omitted, so that a pressure test is not needed.

Description

technical field [0001] The invention relates to the technical field of humidity measurement, in particular to a primary circuit humidity measurement device for a high-temperature gas-cooled reactor. Background technique [0002] In high-temperature gas-cooled reactor nuclear power plants, the primary circuit humidity measuring device is used to measure the humidity of the high-temperature and high-pressure primary circuit coolant helium after cooling, and the humidity signal output by the primary circuit humidity measuring device is used as the steam generator pipeline breach accident. The signal that triggers the shutdown of the reactor is an important monitoring parameter to ensure the safe operation of the reactor, so it is very important to ensure the stable and reliable operation of the humidity measurement system. [0003] At present, the humidity measuring device of the primary circuit of the high-temperature gas-cooled reactor cools the helium in the primary circuit ...

AI Technical Summary

Problems solved by technology

[0003] At present, the humidity measuring device of the primary circuit of the high-temperature gas-cooled reactor cools the helium in the primary circuit through the natural air cooler and the water-cooled cooling coil, and lowers the temperature to the working temperature of the hygrometer. However, the temperature adjustment operation needs to be manually adjusted according to the working conditions. The temperature of the helium gas entering the humidity measuring device is not consistent from the first critical state after the stack is loaded to the full power operation of the unit, so it is necessary to manually adjust the number of blind plates of the natural air cooler and the water flow rate of the water-cooled cooling coil according to the working conditions The gas temperature in the sampling cabin increases the labor cost and the risk of personnel exposure

Images