A steam boiler system with intelligent control of sewage discharge speed

Abstract

The invention provides an intelligent boiler control system. The system conducts automatic control according to the amount of steam generated by boilers and the amount of water input into the boilers, the boilers regularly discharge dirt, the dirt discharging speed is kept unchangeable, a center diagnosis monitor automatically sets the dirt discharging speed according to the specific value between the steam mass and the mass of water input into the boilers, and accordingly the dirt discharging amount is automatically controlled. According to the system, through real-time monitoring of the input water amount and the generated steam amount of each boiler, the dynamic proportion relation between the input water amount and the generated steam amount is obtained, the dirt discharging amount of the boilers is automatically calculated according to the dynamic proportion relation, and the dirt discharging speed is adjusted according to the dirt discharging amount. According to the intelligent boiler control system, due to the fact that the dirt discharging time is automatically calculated, compared with the prior art, hysteresis quality is reduced, and optimal dirt discharging control can be achieved.

Description

technical field [0001] The invention belongs to the field of steam boilers, and belongs to the field of F22. Background technique [0002] When the steam boiler is in operation, the boiler water is concentrated as steam is produced. When the salt concentration rises to a certain level, the boiler water will foam, the co-evaporation of soda and water will occur, the steam will carry a large amount of water, and cause a serious false water level, making the furnace condition control unstable. Therefore, the salt concentration of boiler water must be controlled to ensure the quality of steam and the safety of boiler operation. [0003] my country has national standards for the water quality of industrial boilers. For example, in GB1576-2001, for steam boilers with a pressure of 1.6-2.5Mpa and a superheater, it is stipulated that the dissolved solids concentration (TDS) of the boiler water shall not exceed 2500mg / L. Among them, the dissolved solids can be approximated as the s...

AI Technical Summary

Problems solved by technology

For example, 201510601501X automatically discharges sewage according to the steam-water ratio of the boiler, but the existing sewage discharge method is to automatically open the sewage valve when a certain parameter reaches a certain level, and close the sewage valve when a certain parameter drops to a certain low limit

Although this intermittent automatic sewage discharge method is improved compared with manual timed sewage discharge, the salt content always fluctuates between high and low limits, and because of the hysteresis of data control, there is still a certain amount of excessive discharge or insufficient discharge, which is not the best. Excellent pollution control scheme

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