What should be paid attention to in the design of electrical control of urban sewage treatment equip

What should be paid attention to in the design of electrical control of urban sewage treatment equipment?

by:Ocpuritech     2021-05-12
What should be paid attention to in the design of electrical control of urban sewage treatment equipment? Author: economic development, now there are many factories on the size of the town, due to the wastewater plant emissions, environmental pollution is also more serious. In order to reduce environmental pollution, many urban sewage treatment equipment have appeared on the market. Electrical control is required in many places in urban sewage treatment equipment, and the design of electrical control will be particularly important. So what are the requirements for the design of electrical control of urban sewage treatment equipment? 1. Electrical control of pretreatment section is commonly used in general electrical circuits The electrical appliances mainly include: fuses, various switches, circuit breakers, AC and DC contactors, various buttons, indicators, and various relays. The characteristic of these electrical appliances is to use contacts to connect and disconnect electrical circuits to control The working state of a motor or electrical appliance. Therefore, common in electrical schematic diagrams are the graphic symbols and text symbols of contacts, contactor coils, relay coils, thermal relays and their contacts. At the same time, the capacity of the components should be selected according to the load of the equipment. The equipment in the pretreatment section includes two coarse-grid motors, two fine-grid motors, and two mud-scraping bridge motors. Except for the different powers, the electrical control principles of these devices are exactly the same. Design requirements: motor power indication; two modes of motor automatic control and manual control; motor running status indication; motor overload and automatic shutdown of faults. 2. Electrical control of the aeration tank section The aeration tank treatment section mainly controls the speed of the aeration motor through a frequency converter. The aeration tank section contains 4 groups of 24 aerators, and each aerator is divided into wood control and Remote control, at the same time you can manually adjust the speed of the aerator. Design requirements: Aerator control has both manual control and automatic control; the speed of the aerator can be adjusted manually and automatically; the operation of the aerator is indicated; the fault indication of the frequency converter; the speed of the aerator is indicated. 3. Electrical control of the biological filter section The biological filter section includes two parts: the biological filter and the pump house. Each compartment of the biological filter has an inlet butterfly valve, a recoil inlet butterfly valve, an outlet gate, and a recoil outlet gate; the pump room contains two recoil manifold butterfly valves, two booster pumps, and a recoil valve. Water pump. Gate valve design requirements: power indication; manual opening and closing; automatic opening and closing. This is the end of the introduction to the requirements for the design of electrical control of urban sewage treatment equipment. The design of electrical control must meet the requirements to avoid hazards. The design principles of the entire integrated sewage treatment equipment need to be followed. For better use.
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