Power plant intelligent chemical water working condition control system and method

A control system and chemical water technology, applied in general control systems, control/regulation systems, control/manipulation systems, etc., can solve the problem that operators cannot choose the water treatment method, affect safety and economy, scale and salt accumulation high speed problem

Active Publication Date: 2021-03-09
XIAN THERMAL POWER RES INST CO LTD
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  • Claims
  • Application Information

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Problems solved by technology

[0002] At present, the chemical operation control of the power plant mainly relies on the operating experience of the operating personnel and the control indicators stipulated in relevant standards. However, due to the technical level of the operating personnel and the lag of monitoring, the operating personnel are usually unable to select the optimal one according to the water quality of the unit in time. Feed water treatment method, at the same time, national and industry standards have broad regulations on various chemical operation control indicators (such as feed water pH is 9.2~9.6, feed water dissolved oxygen is 10~150μg / L), and there is a great room for optimization of operation control effect
[0003] If the water vapor control index cannot be adjusted in time according to the change of water quality for a long time, it will lead to a high rate of corrosion, scaling and salt accumulation in the thermal system, which will affect the safety and economy of unit operation. Improving the chemical automatic operation level of power plants is of great significance to improving the reliability and economy of unit operation

Method used

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  • Power plant intelligent chemical water working condition control system and method
  • Power plant intelligent chemical water working condition control system and method

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Embodiment Construction

[0027] The specific implementation manners of the present invention will be further described below in conjunction with the drawings and specific examples.

[0028] Such as figure 1 and figure 2As shown, when the automatic operation is clicked, the smart chemical water condition control device 1 continuously collects the hydrogen conductivity signals from the condensate polishing outlet of the DCS control system 2 and the inlet of the economizer. When the hydrogen conductivity of the condensate polishing outlet 0.08μS / cm, 0.08μS / cm, 0.15μS / cm, 0.15μS / cm, 0.20 When μS / cm, 0.20μS / cm, 0.30 When μS / cm and the hydrogen conductivity of the feed water is >0.30 μS / cm, it will prompt to restore the hydrogen conductivity of the feed water to <0.15 μS / cm within 4 hours, and start timing. If the treatment is not good after 4 hours, it will prompt to stop. Turn off the oxygenation equipment 3. Start the condensate water and feedwater ammonia addition equipment, prompt the bypass fin...

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Abstract

The invention discloses a power plant intelligent chemical water working condition control system and method. The system comprises an intelligent chemical water working condition control device integrated with expert control logic, oxygenation equipment, dosing equipment, a DCS control system connected with the intelligent chemical water working condition control device, and a fine treatment bypass system connected with the DCS control system. The intelligent chemical water working condition control device continuously collects related signals from a DCS control system, judges the most appropriate chemical water working condition through an integrated expert system, and transmits an instruction to the oxygenation equipment and the dosing equipment to control the chemical water working condition, and meanwhile, the intelligent chemical water working condition control device can indicate the DCS control system to control on and off of the fine treatment bypass system and the like. The intelligent chemical water working condition control system can achieve optimization of the control effect according to the integrated expert control logic, the operation safety of the unit is guaranteed, and the damage to the unit due to the fact that an operator cannot select the optimal water supply treatment mode in time according to the water quality condition of the unit is avoided.

Description

technical field [0001] The invention relates to the field of intelligent operation of the water vapor system of a power plant, in particular to a control system and method for intelligent chemical water working conditions of a power plant. Background technique [0002] At present, the chemical operation control of the power plant mainly relies on the operating experience of the operating personnel and the control indicators stipulated in relevant standards. However, due to the technical level of the operating personnel and the lag of monitoring, the operating personnel are usually unable to select the optimal one according to the water quality of the unit in time. Feedwater treatment methods. At the same time, national and industry standards have broad regulations on various chemical operation control indicators (such as feedwater pH 9.2-9.6, feedwater dissolved oxygen 10-150μg / L), and there is great room for optimization of operation control effects. [0003] If the water v...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/418C02F1/00C02F1/42C02F1/68C02F1/66
CPCC02F1/00C02F1/008C02F1/42C02F1/66C02F1/68C02F2209/06C02F2209/22G05B19/41875Y02P90/02
Inventor 孟龙李俊菀
Owner XIAN THERMAL POWER RES INST CO LTD
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