Measuring device and application method for intermediate range of nuclear instrumentation system outside reactor

Abstract

The invention discloses a measuring device and an application method for the intermediate range of an external core instrumentation system, relates to the field of intermediate range detector measuring devices, and solves the influence of the existing intermediate range measuring device on the functional performance of the processing part of the digital device. The invention includes a conditioning part for amplifying and conditioning the analog signal and outputting it to the processing part, and the processing part is used for analog-to-digital conversion to obtain the reactor neutron fluence rate and neutron fluence rate change rate information processing part; the conditioning part outputs The frequency signal is output to the processing part through the optocoupler isolation device. The invention enables a compact arrangement and miniaturization of the measuring device.

Description

Technical field [0001] The present invention relates to the field of intermediate scale detector measuring devices, and more particularly to measurement devices for intermediate range of the bunch of nuclear instrument systems and their application methods. Background technique [0002] The nuclear power plant reactor is measured by mounting the neutron measuring rate of the core leak by mounting a series of neutron detectors outside the reactor pressure vessel, and the pulse / current signal measured by the detector is sent to the system protection cabinet for conditioning and processing. Realize continuous monitoring of reactive power level, power change, and power distribution, providing manner with status information during the complement of the core / discharge, stop, start heap and power operation, and high in neutron The reactor emergency stop will be triggered when the neutron waters change. Since the nuclear instrument system measurement ranges, there is usually more tha...

AI Technical Summary

Problems solved by technology

[0005] In the existing technology, the intermediate range measurement device of the nuclear instrumentation system outside the reactor can only physically isolate the conditioning and processing parts. Usually, the conditioning part is separated from the processing part in the form of a pre-amplification cabinet in terms of spatial arrangement, and it is impossible to separate the The conditioning part and the processing part are integrated in one chassis, which makes the measuring device complex and bulky

If the conditioning part and the processing part are integrated together reluctantly, the digital device of the processing part will affect the functional performance of the conditioning part, and signal isolation cannot be achieved

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