Control method of sewage discharge and water exchange for evaporative condensing equipment

Abstract

The invention discloses a dirt drainage and water changing control method for an evaporative condensation device. The method comprises the following steps that firstly, sensing information is received, whether the sensing information operation result meets the water changing action executing condition or not is judged, if the sensing information operation result meets the water changing action executing condition, the second step is executed, and if the sensing information operation result does not meet the water changing action executing condition, the first step is executed; secondly, the following steps that S21, opening of a blow-down valve is controlled, and closing of a water supplementing valve is kept; S22, opening of the water supplementing valve is controlled, and opening of the blow-down valve is kept; S23, closing of the blow-down valve is controlled, and opening of the water supplementing valve is kept; and S25, the water supplementing valve is closed, and a unit is controlled to enter a standby or shutdown state are sequentially executed. The dirt drainage and water changing control method for the evaporative condensation device can achieve automatic water changing control, the manual workload is reduced, meanwhile, the dirt degree of cooling water can be effectively reduced, and the device heat exchange efficiency is improved.

Description

technical field [0001] The invention relates to heat exchange equipment, in particular to a cooling water exchange control method for evaporative heat exchange equipment. Background technique [0002] Since the cooling water of the evaporative condenser evaporates continuously during the circulating work process, it takes away the heat and realizes cooling and heat exchange; but at the same time, due to the continuous evaporation of the cooling water, the calcium and magnesium ions in the cooling water will remain and accumulate to form dirt and dirt. Attaching to the condenser will affect the heat transfer efficiency. Therefore, changing the cooling water in the equipment in time is an important means to ensure the heat exchange efficiency of the equipment. However, too frequent water changes will lead to increased costs and waste of water resources. Therefore, reasonable control of water changes is a key technical requirement . [0003] Existing evaporative condensing eq...

AI Technical Summary

Problems solved by technology

The disadvantages of this method are: (1) It cannot operate independently, and manual control is required, which increases the workload; (2) Manual monitoring is prone to monitoring errors and forgetting to change the water; (3) Manual water changes are generally It is difficult to remove the formed dirt by simply discharging the sewage and putting in the clean water; (4) there is randomness, and the condition of the cooling water in the equipment cannot be grasped, and the water change time can only be determined by the experience of the technicians , failed to maximize the efficiency of the equipment

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