Fully-enclosed condenser intelligent leakage detection device and method

Abstract

The invention discloses a fully-enclosed condenser intelligent leakage detection device and method. The device comprises a plurality of intelligent leakage detection devices which are distributed at different positions of a condenser hot well at the bottom of the condenser, and each intelligent leakage detection device comprises a condenser hot well sampling port, a magnetic pump, a sampling cooler, an electric regeneration cation exchanger, a conductivity measuring electrode, a flow meter and a flow regulating valve which are sequentially connected with the sampling opening of the condenser hot well through a pipeline, and an outlet of the flow regulating valve is connected with the condenser hot well. The conductivity measuring electrode of each intelligent leakage detection device is connected with the input end of the central data acquisition and control system through the multi-channel conductivity measuring instrument, and the flow meter of each intelligent leakage detection device is connected with the input end of the central data acquisition and control system. The output end of the central data acquisition and control system is connected with the flow regulating valve of each intelligent leakage detection device so as to control the opening degree of the flow regulating valve; the invention further discloses a working method of the device. According to the invention, intelligent leakage detection of the fully-enclosed condenser can be realized.

Description

technical field [0001] The invention relates to the technical field of leak detection for a thermal power plant condenser, in particular to an intelligent leak detection device and method for a fully enclosed condenser. Background technique [0002] The condenser of a thermal power plant is a key component of water vapor conversion. It has a large heat transfer area and is easy to leak. After leakage, it will have a serious impact on the entire water vapor system. Therefore, leak checking of the condenser of a thermal power plant is to ensure the safety and stability of the thermal power plant. key technologies. At present, the self-priming pump samples the condensed water in the hot well of the condenser, uses cation exchange resin to remove cations that affect the accuracy, and then measures its conductivity. The increase in conductivity reflects the deterioration of water quality, so that the conclusion of condenser leakage can be drawn. [0003] Due to the high vacuum d...

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Problems solved by technology

[0004] Since the sampling condensate is pumped out by the self-priming pump, the entire sampling and measurement system is in a negative pressure state, and the measurement system has many components and a complex structure, which is more likely to leak than the condenser, resulting in CO in the atmosphere. 2 Leakage of other impurity gases will affect the analysis results

[0005] Routine sampling and analysis of cation exchange resin removes cations that affect the accuracy and then measures its conductivity. The cation resin needs to be replaced frequently, the maintenance cost is high, and the workload is large; at the same time, it is not convenient for full sealing

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