Condensed water sampling method and device for condenser leakage detection

A technology of sampling device and condenser, which is applied in the direction of sampling device, etc., can solve the problems of poor sampling representativeness and no water extraction, and achieve the effect of small flow, small system resistance and ingenious design

Active Publication Date: 2017-07-21
XIAN THERMAL POWER RES INST CO LTD
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Problems existing in the existing condenser leak detection device: 1) The representativeness of sampling is poor. Nozzle leakage), one is on the bottom of the hot well near the pipe end (only the pipe mouth and heat exchange tube leakage near the pipe mouth can be detected); 2) Often no water samples can be drawn

Method used

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  • Condensed water sampling method and device for condenser leakage detection
  • Condensed water sampling method and device for condenser leakage detection

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Embodiment Construction

[0023] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0024] Preparations before starting: see attached figure 1 , Before starting the sampling system, check and confirm that all valves are closed. Then, open the sampling primary door 2, the sampling secondary door 3 and the exhaust valve 17 on the top of the water inlet tank 6, carry out water injection and exhaust in the sampling system pipeline, observe the indication state of the flow monitor 5, when the flow monitor indicates that the water sample After no flow, it shows that the pipeline in front of the sampling pump 8 has been filled with water and the gas has been exhausted. Close the exhaust valve 17 at the top of the water inlet tank 6 .

[0025] Operation steps: see attached figure 1 After the water injection and exhaust work, open the pump inlet valve 7, the return water regulating valve 11, and the return water valve 12, start the sampling pump 8...

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Abstract

Provided is a condensed water sampling method and device for condenser leakage detection. According to structural features of different power plant condensers, condensed water of water chambers are pumped out of a condenser by arranging special samplers in water chamber heat wells of the condenser and adopting vacuum sampling water pumps, representative water samples are provided for condenser leakage detection to facilitate rapid and accurate diagnosis of water chamber leakage, and an accurate and reliable decision-making basis is provided for non-shutdown disposal of condenser leakage during operation of a power plant. The method and the device have the advantages of strong representativeness and high reliability and are suitable for condensed water sampling during leakage detection in operation of heat exchange tubes of condensers of seawater and fresh water cooling power plants.

Description

technical field [0001] The invention relates to the technical field of power generation, in particular to a condensed water sampling method and device for leak detection of condensers. Background technique [0002] Leakage of condenser heat exchange tubes during operation is one of the important hidden dangers that have plagued the safe operation of power plants for a long time. When the condenser heat exchange tube leaks, the condensed water will be polluted, leading to the deterioration of the water vapor quality of the thermal system, causing serious corrosion and scaling of the thermal system equipment in a short period of time, threatening the safe operation of the unit, even if it is equipped with condensate desalination The unit of the device can only last for a few hours at most. If the leak location cannot be found and treated within these few hours, it can only be shut down urgently to find the leak and deal with it. The condenser leak detection device plays an im...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/14
CPCG01N1/14Y02E30/30
Inventor 张维科李俊菀刘玮
Owner XIAN THERMAL POWER RES INST CO LTD
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