Rotating filtering net control method, system, terminal equipment and storage medium

Abstract

The invention relates to the technical field of a primary circulation water system of a nuclear power station, and discloses a rotating filtering net control method, a system, terminal equipment and astorage medium. The control method comprises the following steps: when a rotating filtering net works, detecting a pressure difference of two sides of the rotating filtering net, and adjusting the rotation speed of the motor of the rotating filtering net according to the pressure difference; when detecting that the rotation speed of the motor of the rotating filtering net and / or the pressure difference meets certain conditions, controlling a high-pressure backwash water pump of the rotating filtering net to be powered on. In the process, whether the high-pressure backwash water pump needs tobe powered on or not is automatically judged according to the pressure difference of two sides of the rotating filtering net and / or the rotation speed of the motor of the rotating filtering net; if the high-pressure backwash water pump needs to be powered on, the high-pressure backwash water pump is controlled to be powered on, then the rotating filtering net can be cleaned in time, and the problem that a machine set is shut down as the pressure difference of two sides of the rotating filtering net is too high is avoided.

Description

technical field [0001] The invention relates to the technical field of primary circulating water systems of nuclear power plants, in particular to a control method, system, terminal equipment and storage medium of a rotary filter screen. Background technique [0002] The rotary screen is an indispensable water filtration and cleaning equipment in the primary circulating water system of nuclear power plants and thermal power plants. It is used in conjunction with the upstream trash fence to effectively intercept and remove suspended and floating objects in the water, such as aquatic plants, Leaves, branches, fish and shrimp, industrial, agricultural and domestic waste, etc. In order to prevent the pressure difference between the two sides of the rotary filter screen from being too high when it is working, a high-pressure backwash pump is often used to flush the rotary filter screen. [0003] At present, the high-pressure backwash pump of the rotary filter is mainly controlle...

AI Technical Summary

Problems solved by technology

[0003] At present, the high-pressure backwash pump of the rotary filter is mainly controlled manually. When the rotary filter rotates at a high speed for more than 15 minutes, the high-pressure flushing pump must be manually put into operation, or the pressure difference between the two sides of the rotary filter ΔP>0.25mWC. Before the pressure difference ΔP on both sides of the filter reaches 0.30mWC, the high-pressure flushing pump is manually put into operation. When there are too many seawater organisms, there may be too much seawater attachment on the rotating filter. In this way, when the rotating filter runs at high speed, When the high-speed motor of the rotary filter is switched to medium or low speed due to excessive load before the high-pressure backwash pump is started, the high-pressure backwash pump cannot be put into operation at this time, which may cause pressure on the rotary filter The difference rises to 0.8mWC, which eventually leads to the tripping of the CRF pump. In severe cases, it may cause the unit to reduce power or shut down

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