Boiler circulation pump water level control method

Abstract

The invention discloses a boiler circulation pump water level control method, and mainly relates to an automatic control technology for water level adjustment and dry and wet state conversion in the starting and stopping process of industrial once-through boilers (with boiler circulation pumps) of a thermal power plant and the like. Based on the characteristic of industrial automatic control of thermal power plants and the like, from the perspective of intelligence, automation and security, water level adjustment, dry state and wet state conversion and the like of the once-through boiler (with the boiler circulation pump) are automatically completed, the personnel operation amount is reduced, the safety risk is reduced, and a foundation is laid for one-key start and stop of a unit in the future.

Description

technical field [0001] The invention mainly relates to the automatic control technology of water level adjustment and dry-wet state conversion during the start-up and shutdown process of industrial once-through boilers (with furnace circulating pump) in thermal power plants, and in particular relates to a method for controlling the water level of the boiler circulating pump. Background technique [0002] At present, during the start-up and shutdown of once-through boilers (with furnace circulation pumps), water level adjustment, dry and wet state conversion are very critical operations. For a long time, due to the limitation of automatic control technology, manual operation has been adopted. The operator follows the steps of the operation ticket and comprehensively considers the key points such as boiler water flow, feed water flow, main steam pressure, separator water level and separator water storage tank water level. Constantly adjust the adjustment amount such as the ope...

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Problems solved by technology

[0003] According to the above problems, the present invention discloses a method for controlling the water level of a furnace circulation pump. Based on the characteristics of industrial automatic control in thermal power plants, etc., from the perspective of intelligence, automation and safety, the water level adjustment, dry, The automatic completion of wet state conversion reduces the amount of personnel operations and safety risks, laying the foundation for the realization of one-button start and stop of the unit in the future, and is used to solve the problem of manually completing the water level adjustment of the once-through boiler (with boiler circulation pump) in the prior art. , The risk of wet state conversion

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