Automatic joint debugging system for multiple air blower units and control method thereof

Abstract

The invention discloses an automatic joint debugging system for multiple air blower units and a control method thereof. The system includes several air blower units, a main control cabinet, a dissolved oxygen sensor and an oxygen demand acquisition and calculation system, wherein the dissolved oxygen sensor and the oxygen demand acquisition and calculation system are connected with the main control cabinet respectively. Each air blower unit is provided with a local PLC control cabinet for controlling the air blower unit, the local PLC control cabinet is connected with the main control cabinetthrough optical fiber, the dissolved oxygen sensor is used for measuring the oxygen amount of sewage, the oxygen demand acquisition and calculation system is used for collecting various parameter values of sewage and calculate the oxygen demand of sewage and sending the oxygen demand of sewage to the main control cabinet, the main control cabinet includes a PLC, and a PID control algorithm is integrated on the PLC controller. The main control cabinet regulates the oxygen supply of the multiple air blower units by controlling the oxygen supply of one air blower unit through the local PLC control cabinet.

Description

technical field [0001] The invention belongs to the technical field of blower control, and relates to an automatic joint adjustment system of multiple blower units and a control method thereof. Background technique [0002] In the current urban sewage treatment process that usually adopts biological treatment, bottom blast aeration is a common aeration method. Aeration is the most important part of energy consumption in sewage plants, accounting for about 50-80% of the total power consumption. With the improvement of control methods and the development of energy-saving technology, precise aeration has become an important aspect of energy-saving renovation of sewage plants, which has a significant energy-saving effect. The so-called precise aeration refers to supplying air according to the actual needs of the biological reaction tank of the sewage plant. In this way, on the one hand, the stability of the biological treatment environment can be guaranteed; on the other hand,...

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Problems solved by technology

[0003] However, a general sewage plant has multiple blower units. The traditional method is to manually control the start and stop of a single blower unit and the air volume adjustment of each blower unit locally or remotely. The manual control method has many disadvantages. On the one hand, it requires two personnel Fourteen hours on duty, resulting in an increase in labor costs; on the other hand, it will cause a large delay and imprecise adjustment of the air volume, which will not achieve the effect of precise aeration and energy saving

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