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Digital system and method for automatic shutdown of nuclear power plant during earthquake

A nuclear power plant, automatic shutdown technology, applied in nuclear power generation, nuclear engineering, reactors, etc., can solve common cause failures, reduce system reliability, system complexity, etc. sexual effect

Inactive Publication Date: 2017-07-04
SHANGHAI NUCLEAR ENG RES & DESIGN INST CO LTD
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Problems solved by technology

For example, in Japan and Taiwan, the design of the analog system is adopted, which is relatively backward in today's emphasis on digital technology, while Russia's IAPS integrates the earthquake monitoring system and the earthquake shutdown system, and the system is too complicated. South Korea's ASTS, although The design is dual channel but the equipment is installed in the same cabinet, there is a risk of common cause failure and reduced system reliability

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  • Digital system and method for automatic shutdown of nuclear power plant during earthquake

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Embodiment Construction

[0033] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0034] Such as figure 1 As shown, the nuclear power plant digitized earthquake automatic shutdown system includes two channels, respectively A channel and B channel; each channel includes:

[0035] Two acceleration sensors; that is, the A channel includes the acceleration sensor A1 and the acceleration sensor A2, and the B channel includes the acceleration sensor B1 and the acceleration sensor B2. The acceleration sensor is installed in the airtight protective cover, and is rigidly connected with the installation surface to prevent signal amplification;

[0036] A logic trigger cabinet; two acceleration sensors are respectively connected with the input / output (I / O) module of the logic trigger cabinet of this channel through a mul...

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Abstract

The invention provides a digital system and method for automatic shutdown of a nuclear power plant during an earthquake. The system comprises at least two channels, wherein each channel comprises at least two triaxial acceleration sensors (hereinafter referred to as acceleration sensors) and at least one logic triggering cabinet. The method comprises the following steps: S1, data acquisition; S2, data processing; S3, valuator logic; S4, coincidence logic; and S5, trigging of shutdown. The digital system and method for automatic shutdown of the nuclear power plant during the earthquake fill a blank in experience of independent designing of an automatic shutdown during the earthquake in China.

Description

technical field [0001] The invention belongs to the field of digital instrument control systems for nuclear power plants, and in particular relates to a digital earthquake automatic shutdown system and method for nuclear power plants. Background technique [0002] Under earthquake conditions, the systems, structures and components of nuclear power plants may be damaged, which will affect the safe operation of nuclear power plants. Therefore, nuclear power plants are generally required to be equipped with seismic monitoring systems, which notify operators after collecting and analyzing seismic signals. Earthquake response-related operations are carried out, but the system only has the monitoring function and does not have the function of automatic shutdown of the reactor. Most of the nuclear power plants in service and under construction in my country and the world do not have the function of automatic shutdown in earthquakes. Except for the Tianwan nuclear power plant impor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G21C9/02
CPCG21C9/02Y02E30/30
Inventor 郑培根毕道伟卜江涛匡红波张健鹏
Owner SHANGHAI NUCLEAR ENG RES & DESIGN INST CO LTD
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