A portable neutron detection device

Abstract

The invention provides a portable neutron detection device. The portable neutron detection device comprises a back plate, and a power module, an upper computer module, a source range module, an intermediate range module, a power range module, an analog module, a digital module and a data processing module which achieve mutual connection and communication through the back plate, wherein the upper computer module acquires data input by a user and assigns the data to the corresponding modules to generate an acquisition instruction and / or working high voltage; the source range module, the intermediate range module and the power range module acquire output signals of a corresponding source range detector, a corresponding intermediate range detector and a corresponding power range detector in an RPN to be measured respectively, while the analog module and the digital module acquire analog data and digital data of each data board card on a protection cabinet for the RPN to be measured; and through calculation analysis in the data processing module and according to a calculation analysis result, the fault state of each component in the RPN to be measured is judged. After implementation of the portable neutron detection device, online detection on multiple faults of an ex-reactor nuclear instrumentation system is achieved; and the portable neutron detection device has the advantages of high portability, multifunctional detection, short detection response time and the like.

Description

technical field [0001] The invention relates to the technical field of nuclear power safety measurement, in particular to a portable neutron detection device. Background technique [0002] The external nuclear instrumentation system (RPN) uses a series of neutron detectors distributed outside the reactor pressure vessel of the nuclear power plant to continuously monitor the reactor power, power change rate and axial distribution of power. It mainly consists of neutron detectors and nuclear instruments. Equipment composition is one of the important systems directly related to the safety of the reactor. [0003] Since the signals processed by the excore nuclear measuring instrument system are extremely weak, the anti-interference and protection requirements of the equipment of the whole system are relatively high. Moreover, the layout of the detectors, cables, connectors and instrumentation equipment in the RPN of the nuclear measuring instrumentation system outside the react...

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Problems solved by technology

[0004] In summary, the online fault detection of the nuclear measuring instrument system outside the reactor can provide a strong guarantee for the safe operation of nuclear power plants, but the existing detection equipment can only perform a single detection of the function of the detector under laboratory conditions, and cannot realize online detection , and the portability of detection equipment is low, which cannot meet the requirements of rapid response

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