CORROSION TESTING METHOD AND HIGH-SPEED CIRCULATION UNIT FOR ITS IMPLEMENTATION Russian patent published in 2022 - IPC G01N17/00 

FIELD: testing technology.

SUBSTANCE: claimed group of inventions relates to installations for gravimetric and electrochemical studies of corrosion processes occurring in aqueous phases at elevated flow rates of these aqueous phases. The method for corrosion testing consists in placing the test samples or sensors in the test section, which is mounted on the installation before the start of the tests, but is not included in the turn cycle of the test medium, preparing the test medium when it circulates through the bypass section, which includes gas purging, and upon completion of the preparation of the medium, it is redirected to the test section with samples and begins the countdown of the test period. The corrosion testing unit includes a sealed centrifugal pump, a magnetic coupling in a wear-resistant and chemically resistant design, the pump is mounted on vibration-damping vibration supports and connected to the unit’s reverse cycle using pipelines, the pump receives a test medium from a buffer tank, which is installed at a height that provides natural fluid back-up at the pump inlet, for heating or a heat exchanger is installed in the buffer tank for cooling the test medium, the electric drive of the pump is powered by an electric shield, and the rotation frequency of the electric drive of the pump is set by a frequency controller from the control panel, while tees are placed in the reverse cycle, in the plugs of the free holes of which measuring instruments and equipment elements are mounted to control the corrosion rate.

EFFECT: increased service life and repair periods of pipelines and equipment, reduction of emergency risks associated with corrosion, reduction of repair costs and losses associated with equipment downtime.

7 cl, 2 dwg