Fast spraying freezing coldproof method

Abstract

The air inlet of lower portion of cooling tower is enclosed and baffled by using metal screen, the outer side of said metal screen is equipped with a circle of water pipeline, on the water pipeline several branch water pipes are set, every branch water pipe is equipped with a water nozzle, the main water pipeline is connected to the water pool of tower bottom, in the pipeline connected with water pipe and water pool a water pump and a temperature control device are mounted, the temperature control device includes temperature controller, temperature sensor and AC contactor connected on the water pump and motor loop, the sensor can be used for detecting water temperature in the water pool and setting upper limit and lower limit of temperature controller action.

Description

1. Technical field [0001] The invention belongs to the cold protection technology of cooling towers, and in particular relates to a winter cold protection method for an air inlet at the lower part of a hyperbolic cooling tower. 2. Background technology [0002] The cooling tower of the power plant enters the winter operation period when the winter temperature reaches below -10°C. In order to prevent freezing damage to the cooling tower system, winter cold protection measures must be taken for the air inlet at the lower part of the tower. The current specific methods are: hanging the windshield; increasing the water distribution of the outer ring of the sprinkler device; artificially breaking ice, etc. The above methods are very inflexible, time-consuming and laborious, and have poor thermal insulation effect, so it is difficult to ensure the cooling effect of the cooling tower. Due to the variable temperature and large temperature difference in winter, it is difficult to ma...

AI Technical Summary

Problems solved by technology

The above method is very inflexible, time-consuming and labor-intensive, the insulation effect is poor, and it is difficult to ensure the cooling effect of the cooling tower

Due to the variable temperature and large temperature difference in winter, it is difficult to manually adjust the windshield frequently; the temperature of the cooling water and the air temperature around the sprinkler device cannot be adjusted by itself, and the air intake is unevenly distributed; artificial ice is limited by conditions

Due to improper cold protection measures, the icing of the water spraying device is subjected to a large overload, and even the water spraying filler and the supporting beam collapse, and the ventilator is severely damaged by freezing and thawing, resulting in insufficient natural draft of the ventilator, making the cooling tower in summer Can not take full load, can not achieve the purpose of natural cooling water

After the cooling tower stops running, due to the lax sealing of the windshield, the cold air flows in the tower. Due to the penetration of water vapor, the frost heaving force generated after freezing will cause serious damage to the cooling tower ventilator and water spraying device, reducing the The service life of the cooling tower is shortened, the maintenance cost is increased, the cooling effect of the cooling tower is affected, and the power generation cost of the enterprise is increased.

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