Off-core nuclear instrumentation system equipment for nuclear power plant

Abstract

The invention discloses off-core nuclear instrumentation system equipment for a nuclear power plant, relates to the field of nuclear measurement instrument systems, and solves the problems of relatively high electronic noise, non-program control drawing and discrimination of a characteristic curve and application limitation. The device comprises multiple redundancy protection groups used for outputting to a control cabinet (16), each protection group is provided with a measurement channel, a neutron detector (1) converts detected neutron signals into electric signals and sends the electric signals to a conditioning part, and the conditioning part is used for converting the electric signals into pulse signals, amplifying the pulse signals and then sending the pulse signals to a processing part in an optical isolation mode; the processing part acquires the amplified and output pulse signal and then outputs the pulse signal to the control cabinet (16) through the communication module (10); and the processing part and the control cabinet (16) are used for continuously monitoring the power level, the power change and the power distribution of the reactor. The system is flexible in control, high in data processing capability and excellent in stability.

Description

technical field [0001] The invention relates to a nuclear measurement instrument system, in particular to an out-of-core nuclear instrument system equipment used in a nuclear power plant. Background technique [0002] The nuclear instrumentation system outside the nuclear power plant measures the neutron fluence rate of the core leakage through a series of neutron detectors installed outside the reactor pressure vessel, and the pulse / current signals measured by the detectors are sent to the system protection cabinet for conditioning and Process, realize continuous monitoring of reactor power level, power change and power distribution, provide operators with reactor status information during core loading / unloading, shutdown, startup and power operation, and neutron fluence rate Reactor scrams are triggered at high and fast neutron fluence rates. The nuclear instrumentation system equipment outside the reactor is the key equipment of the nuclear power plant. [0003] At pres...

AI Technical Summary

Problems solved by technology

[0006] The technical problems to be solved by the present invention are: high electronic noise, non-program-controlled drawing of discrimination characteristic curves, and application limitations;

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