Trotting horse lamp type sewage plant lifting pump lifetime extension control device and control method

Abstract

The invention relates to a trotting horse lamp type sewage plant lifting pump lifetime extension control device and control method and belongs to the industrial automation control field. The control device comprises a PLC control system, an operation panel, a liquid level transmitter and pump low-voltage electrical loops; the liquid level transmitter is arranged in the collecting tank of a sewage plant; lifting pumps are connected between the collecting tank of the sewage plant and sewage treatment equipment; one lifting pump is connected with one pump low-voltage electrical loop; and the PLC control system includes a CPU module as well as a 24V direct-current power source module, an Ethernet communication module, an analog quantity input module, digital quantity input modules and digital quantity output modules which are all connected with the CPU module. The control method is used for performing balance control on the use time and the number of the times of the startup of the lifting pumps of the sewage plant and includes the following steps that: liquid level control value setting; collecting tank liquid level acquisition; pump low-voltage electrical loop state acquisition; trotting horse lamp type alternate startup; lifetime extension control information processing termination; trotting horse lamp type alternate startup; lifetime extension control value output termination; and display and monitoring.

Description

technical field [0001] The invention relates to the field of industrial automation control, in particular to a life extension control device and control method for a lift pump in a sewage plant. Background technique [0002] In the sewage treatment system of many sewage treatment plants, there are usually multiple lift pumps to lift the water from the sump to the plant. The lift pump is generally started and stopped according to the liquid level. When the liquid level of the sump reaches a certain level, the lift pump corresponding to the liquid level will be activated. If the liquid level continues to rise to another level, another corresponding lift pump will be activated. Liquid level lift pump. The result of this method is that the lift pump corresponding to the lowest liquid level is always started first, the continuous use time is too long, and the number of starts is too many, resulting in a significant reduction in the life of the lift pump with low liquid level. H...

AI Technical Summary

Problems solved by technology

The result of this method is that the lift pump corresponding to the lowest liquid level is always started first, the continuous use time is too long, and the number of starts is too many, resulting in a significant reduction in the life of the lift pump with low liquid level

However, the lift pump corresponding to the high liquid level is sometimes not used for a long time, and the lubricating oil cannot be regularly applied on the mechanical equipment to cause rust, and it will be scrapped before the service life; or the waterproof parts of the lift pump corresponding to the high liquid level cannot receive water regularly. Lubrication causes aging, and then it is scrapped before the service life expires

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