Ion exchange resin column switching system for hydrogen conductivity measurement

Abstract

The invention discloses an ion exchange resin column switching system for hydrogen conductivity measurement. The ion exchange resin column switching system comprises a water inlet pipeline, a flow cell, a failure monitoring system, a control system, a first control valve group, a second control valve group, a plurality of cation exchange resin columns and a failure detector for detecting whether each cation exchange resin column fails or not, wherein the water inlet pipeline is communicated with the inlet of each cation exchange resin column through a first control valve group, and the outlet of each cation exchange resin column is communicated with the inlet of the flow cell through a second control valve group; an input end of the failure monitoring system is connected with an output end of each failure detector, an output end of the failure monitoring system is connected with an input end of the control system, and an output end of the control system is connected with a control end of the first control valve group and a control end of the second control valve group. The system can realize automatic switching of the cation exchange resin columns.

Description

technical field [0001] The invention belongs to the field of water quality monitoring of power generation technology, and relates to an ion exchange resin column switching system for hydrogen conductivity measurement. Background technique [0002] The hydrogen conductivity of the water vapor system reflects the overall content of impurity anions in the water vapor system. It can continuously monitor the harmful impurities in the water vapor system. Monitoring the hydrogen conductivity is one of the main means to ensure the safe and economical operation of the generator set. It can achieve indirect monitoring of the thermal power of the water vapor system. The purpose of equipment corrosion conditions. [0003] At present, most power plants mainly monitor whether the measured value of hydrogen conductivity exceeds the control value as the standard for replacing the cation exchange resin. When the measured value of hydrogen conductivity exceeds the control index, it is conside...

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Problems solved by technology

[0004] 1) The increase of hydrogen conductivity is not only caused by the failure of the resin, but also the deterioration of water quality will also cause the increase of hydrogen conductivity, so this judgment standard has a certain degree of blindness

[0005] 2) When the quality of water vapor deteriorates, the measured value of hydrogen conductivity will increase and exceed the control index, and the instrument maintenance personnel will use this as the basis for judging the failure of the resin and replace the resin. Inadequate flushing within a short period of time leads to high hydrogen conductivity, which conceals the real deterioration of water quality and adversely affects chemical supervision and control

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