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Thermal parameter stability control device for secondary side of compact steam generator

A technology of stable control device and steam generator, applied in steam generation, control system, lighting and heating equipment, etc., can solve the problems of unstable flow, small control range, inaccurate parameter control, etc. The effect of side pressure and heat transfer enhancement

Active Publication Date: 2019-11-05
NUCLEAR POWER INSTITUTE OF CHINA
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Problems solved by technology

[0004] The purpose of the present invention is to provide a thermal parameter stabilization control device for the secondary side of a compact steam generator, which solves the problems of inaccurate parameter control and a small control range in the control device in the prior art, and ensures that the secondary side of the compact steam generator Accurate and stable control of secondary feedwater flow, feedwater temperature, and steam pressure to avoid flow instability

Method used

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  • Thermal parameter stability control device for secondary side of compact steam generator

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Embodiment

[0022] like figure 1 As shown, the thermal parameter stabilization control device for the secondary side of the compact steam generator of the present invention includes a water storage tank 14, which is the water source of the entire circuit, and the arrangement height must be greater than the suction inlet of the centrifugal pump to avoid cavitation of the centrifugal pump. To ensure the safe operation of the centrifugal pump, 9 AC electric heating rods are arranged in the replenishing water tank, which are divided into three groups for independent operation. According to the actual experimental requirements, the input quantity of electric heating rods is controlled, and the water temperature of the water storage tank 14 is adjusted. The water storage tank 14 is equipped with a magnetic flip The liquid level gauge monitors the liquid level of the water storage tank 14 at all times to ensure that the electric heating rod is completely submerged. The water storage tank 14 is pr...

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Abstract

The invention discloses a thermal parameter stabilization control device on the secondary side of a compact steam generator. The secondary side feed water inlet, and the secondary side steam outlet of the steam generator pass through the condenser through the pipeline and return to the water storage tank. In the present invention, a large flow regulating branch and a small flow regulating branch are arranged on the output pipeline of the high-speed centrifugal pump. The purpose is to increase the pressure difference between the outlet of the centrifugal pump and the outlet steam of the secondary side of the compact steam generator, at least greater than 0.4MPa, so as to avoid the flow instability phenomenon on the secondary side of the compact steam generator , to achieve stable control of the secondary side feedwater flow.

Description

technical field [0001] The invention relates to the field of accurate and stable control of feedwater flow rate, feedwater temperature and steam pressure on the secondary side of a compact steam generator, and specifically relates to a thermal parameter stabilization control device on the secondary side of a compact steam generator. Background technique [0002] Compact steam generators have been widely used in nuclear power plants and other industrial fields. Compared with the traditional saturated natural circulation steam generator, it has the advantages of compact structure, high efficiency, and fast response to load tracking. However, under external disturbances, the pressure of superheated steam changes rapidly. If the feed water flow cannot quickly track the change of load, the steam quality will not be able to Meet the design requirements. At the same time, the heat storage capacity of the reactor coolant is large. When the working conditions change rapidly, if the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F22B35/08
CPCF22B35/08
Inventor 宫厚军胡钰文徐建军谭曙时胡俊
Owner NUCLEAR POWER INSTITUTE OF CHINA
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