A method for implementing temporary moisture-proof and dehumidification
An implementation method and a temporary technology, applied in the field of machinery, can solve the problems such as the difficulty of fast and effective control of humidity, and achieve the effects of prolonging the risk of overhaul time, fast implementation, and reducing the generation of radioactive waste
Active Publication Date: 2021-11-16
CNNC NUCLEAR POWER OPERATION MANAGEMENT +1
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Problems solved by technology
If the hot air blower is used alone on site, the indoor temperature will be too high and it is not suitable for other staff to perform tasks here; if the dehumidifier is used alone, since the height of the space is about 4 meters, the humidity at the position where the voltage stabilizer electric heater is located is still very high Difficult to control quickly and effectively
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[0021] Take moisture-proof and dehumidification measures combining hot air blower and dehumidifier. The actual number of hot air blowers and dehumidifiers can be adjusted according to the size of the site space; the air outlet of the hot air blowers faces the bottom of the regulator.
[0022] (1) Since the indoor space at the bottom of the voltage stabilizer is about 4 meters high, the use of a hot air fan has the advantages of obvious dehumidification effect and quick effect; but there are also disadvantages such as high power, high temperature, and the need for special personnel on duty. Try to choose a hot air blower with temperature control. When the ambient temperature reaches 30-40°C, the hot air blower stops heating and only keeps supplying air to ensure indoor circulation.
[0023] (2) The use of dehumidifiers has the advantages of low ambient temperature, automatic control does not require special personnel to be on duty, and only needs to pour water at regular interv...
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The invention belongs to the field of machinery, and in particular relates to a method for implementing temporary moisture-proof and dehumidification. This method adopts the combination of hot air blower and dehumidifier, which can be quickly deployed and evacuated, and the temperature and humidity on site can be quickly and effectively controlled to meet the temperature and humidity requirements of the site, and will not cause adverse effects on other nuclear safety equipment. . The present invention mainly includes the following methods: step 1: determination of prerequisites; step 2: pre-construction preparation and confirmation; step 3: installation and debugging; step 4: closed acceptance; step 5: timing measurement; step 6: isolation monitoring; step 7: Site cleared. The method is quick to implement, quick to evacuate, "offline" to implement, and comprehensively utilizes the advantages of heating and dehumidifiers. The implementation process is safe and effective, and there will be no risk of overheating, damage to the electric heater of the voltage stabilizer, or even fire.
Description
technical field [0001] The invention belongs to the field of machinery, and in particular relates to a method for implementing temporary moisture-proof and dehumidification. Background technique [0002] The electric heater element at the bottom of the voltage stabilizer of two units of a nuclear power plant had an insulation drop defect during the refueling overhaul. After the project team analyzed the electric heater element of the voltage stabilizer on site due to the influence of the installation defect, the performance of the internal insulation material was different. Accelerated aging phenomenon to a certain extent is susceptible to insulation degradation or even failure due to changes in environmental humidity. If the insulation is lower than the standard before it is put into use, but there is not enough time window to deal with it, it will seriously affect the system to be put into use on time. Temporary Dehumidification measures reduce the impact of ambient humidi...
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IPC IPC(8): G21D1/00G21D1/02F24F1/0083
CPCF24F1/0083G21D1/003G21D1/02Y02E30/00
Inventor 余勇单鑫尚强许捷金国强冯宁尚宪和刘强徐文网朱雷堂
Owner CNNC NUCLEAR POWER OPERATION MANAGEMENT