Feed pump protection verification system and method

Abstract

The invention discloses a pump feeding protection verification system and method. The system comprises a control interface and a control device. The control interface comprises an instruction button and a test content success display item; the control device comprises a start cutting module, a feed pump tripping control module, an ETS control module, a lubricating oil pump control module, an EH oil pump control module, a feed pump outlet flow tripping control module, a deaerator water level control module, a control valve control module and a quick-closing valve control module. The control logic is modified and an operation interface is added, so that the logic forcing and signal modification time is shortened, the protection verification work is simplified, the human intervention is reduced, the test time is shortened, the efficiency is improved, the probability of human errors is reduced, and the unit safety is improved.

Description

technical field [0001] The invention belongs to the field of feed pump protection, and relates to a feed pump protection verification system and method. Background technique [0002] According to the regulations, after the maintenance of the steam-driven feed pump protection device, the protection action test must be carried out, and it is allowed to be put into operation after the test is passed. The feed pump protection test is carried out before the overhaul is over and before starting. Due to the actual working conditions of the unit, many protection signals are in action, such as: front pump trip, front pump inlet door closed, high exhaust steam pressure At the same time, there are protection signals that do not meet the trip conditions, such as: the water level of the deaerator is low, and the water cannot be discharged due to economic considerations; and due to different protection settings, the trip conditions cannot be met under normal conditions, such as: low water...

AI Technical Summary

Problems solved by technology

The feed pump protection test is carried out before the overhaul is over and ready to start. Due to the actual working conditions of the unit, many protection signals are in the active state, such as: the front pump trips, the front pump inlet door is closed, the exhaust pressure is high, etc. At the same time, the protection signal does not meet the trip conditions, such as: the water level of the deaerator is low, and the water cannot be released due to economic considerations; and due to the different levels of protection settings, the trip conditions cannot be met under normal conditions, such as: the water supply flow rate is low Jump to the pump, because when the flow rate is low, an alarm will be issued and the linkage recirculation door will be opened, so that the protection calibration cannot be performed

Therefore, there are many items to be checked in the whole feeding pump protection test, and the operation is cumbersome. Usually, there are many people during the test, and the requirements for maintenance personnel are high. The probability of human error is high, and the safety of the unit cannot be guaranteed.

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