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Closed-type cooling system for fuel gas thermal power plant, and starting/stopping control method for closed-type cooling system

A technology of closed cooling water and thermal power plants, applied in the direction of non-electric variable control, temperature control, liquid level control, etc., can solve the problems of interfering with the operating state, unable to realize automatic start, automatic stop, and unable to realize automatic start, etc., to achieve automatic stop effect

Active Publication Date: 2016-07-27
STATE GRID CORP OF CHINA +1
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Problems solved by technology

The existing closed cooling water system cannot realize the automatic start and automatic stop under the running state of the closed cooling water system of the gas-fired thermal power plant.
It is impossible to realize the automatic start-up of the closed-circuit cooling water system of the gas-fired thermal power plant under the partial start-up state, and it will interfere with the original operation state

Method used

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  • Closed-type cooling system for fuel gas thermal power plant, and starting/stopping control method for closed-type cooling system
  • Closed-type cooling system for fuel gas thermal power plant, and starting/stopping control method for closed-type cooling system
  • Closed-type cooling system for fuel gas thermal power plant, and starting/stopping control method for closed-type cooling system

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Embodiment Construction

[0051] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0052] An embodiment of the present invention provides a closed cooling water system of a gas-fired thermal power plant. The closed cooling water system of a gas-fired thermal power plant includes: a two-to-one closed cooling water system, a one-to-one closed cooling water system, and a closed-water public system.

[0053] Such as figure 1 As shown, the closed water public system includes: closed cooling water supply main pipe 1, closed cooling water return wa...

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Abstract

The invention provides a closed-type cooling system for a fuel gas thermal power plant, and a starting / stopping control method for the closed-type cooling system. The method comprises the steps: the starting of a closed-water type utility system, the selecting of units, the starting of operation, and the stopping of the system. The method needs to judge whether the pressure of a demineralized water mother tube is greater than 0.2MPa or not, whether a closed-type circulating water pump is pre-selected or not and whether a 2GT+1ST closed-type cooling water system or a 1GT+1ST closed-type cooling water system is pre-selected or not before the step of the starting of the closed-water type utility system. If the pressure of the demineralized water mother tube is greater than 0.2MPa, the closed-type circulating water pump is pre-selected and the 2GT+1ST closed-type cooling water system or the 1GT+1ST closed-type cooling water system is pre-selected, the step of the starting of the closed-water type utility system is carried out. According to the invention, the method can achieve the automatic starting of the closed-type cooling water systems during the complete stopping or partial starting of the closed-type cooling water systems, and does not affect an original operation state during the partial starting. The method achieves the automatic stopping of the closed-type cooling water systems in an operation state.

Description

technical field [0001] The invention relates to a closed cooling water technology of a gas thermal power plant, in particular to a closed cooling water system of a gas thermal power plant and a start-stop control method thereof. Background technique [0002] The function of the closed cooling water system of the gas-fired thermal power plant is to provide a cooling water source with high water quality requirements and low water consumption for the auxiliary equipment of the gas-fired thermal power plant. Generally, demineralized water or condensed water is used. The existing closed cooling water system cannot realize the automatic start-up and automatic stop under the running state of the closed cooling water system of the gas-fired thermal power plant. It is impossible to realize the automatic start-up of the closed cooling water system of the gas-fired thermal power plant under the partial start-up state, and it will interfere with the original operation state. Contents ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05D23/00G05D9/12
Inventor 任彦李磊左川高爱国
Owner STATE GRID CORP OF CHINA
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