Simulation test device for shutdown corrosion of thermal equipment

Abstract

The invention discloses a simulation test device for shutdown corrosion of thermal equipment. The simulation test device comprises an air dryer, an air humidifier, an air pump, a dosing tank, a boilermodel and a condenser model. The dryer and the humidifier are installed side by side at the inlet of the air pump. The relative humidity inside the test device can be controlled by adjusting a proportion of wet air to dry air. The air pump, the dosing tank, the boiler model, and the condenser model are sequentially connected in series by a pipe; ventilation of the dosing tank, the boiler model and the condenser model is realized by the air pump. A volatile vapor phase corrosion inhibitor is arranged in the dosing tank; the volatilized agent is transported to the inside of the boiler model byair carrying. According to the invention, the internal temperature and humidity environment and the water accumulation environment of the thermal system equipment after shutdown can be simulated; theresearch on the corrosion law of the thermal equipment shutdown is carried out; and thus the basis is provided for making the shutdown corrosion protection strategy.

Description

technical field [0001] The invention belongs to a corrosion protection test device, in particular to a simulated test device for thermal equipment outage corrosion. Background technique [0002] During the shutdown (standby) period of the thermal system, because the system is not tight and the water vapor remains, the water vapor side of the thermal equipment is exposed to the atmospheric environment with high relative humidity, resulting in large-area corrosion of the metal materials of the thermal equipment, that is, corrosion of the thermal equipment out of service. It is one of the most important corrosion forms of thermal equipment. The internal environment of thermal equipment is a key factor affecting the corrosion rate of outage, and the study of the correlation between internal environmental factors and corrosion of metal materials is the basis and premise for formulating outage corrosion protection strategies for thermal equipment. Due to the large and complex the...

AI Technical Summary

Problems solved by technology

Due to the large and complex thermal system, the materials used by different equipment and the environment in which they are located are quite different. It is difficult and uneconomical to conduct on-site research on the corrosion law and anti-corrosion effect of the thermal system.

Images