Purification and detection system for pure water used for cooling converter valve

Abstract

The invention provides a purification and detection system for pure water used for cooling a converter valve. The purification and detection system is used for automatically purifying and detecting the dynamic pure water to be detected and comprises a main water circulation loop and a pure water purification branch. The main water circulation loop consists of a frequency-conversion water-circulation pump and a heat exchanger which are connected in parallel by a pipeline; the pure water purification branch consists of a flow distribution device, a pure water purification device and a precision detection device which are connected in series by pipelines; the pure water purification branch and the main water circulation loop are connected in parallel; and a refrigerating unit is connected with the heat exchanger in parallel by a pipeline. The purification and detection system provides a detection environment with constant flow, constant temperature and constant pressure for purification of the pure water for cooling the converter valve, the detection environment is stable and is high in redundancy, accurate to control and high in reliability, and water quality ion concentration detection, water pollution concentration SDI detection, ion exchange resin performance detection, detection on pH value, conductivity dissolved oxygen and other detection on the purification of the pure water for cooling the converter valve are fully realized, so that the safe and stable running of the converter valve is ensured.

Description

technical field

[0001] The invention relates to the application field of high-voltage direct current transmission engineering, in particular to a pure water purification detection system for cooling a converter valve. Background technique

[0002] The converter valve is one of the core equipment of the HVDC transmission project, and the converter valve cooling system is a necessary auxiliary system for the converter valve, and also a reliable guarantee for the safe operation and stable monitoring of the HVDC project. The converter valve cooling system has been operating in a high-voltage environment for a long time, which gradually exposed the decrease in the purity of the cooling medium, fouling of the water transmission and distribution pipeline of the converter valve body, internal corrosion of the converter valve radiator, broken resin particles and leakage, and ion exchange cycle oscillations and other problems, resulting in the decrease of the heat dissipation performa...

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