Preprocessing device for neutron pulse signals in reactor

Abstract

The invention discloses a preprocessing device for neutron pulse signals in a reactor. The preprocessing device comprises a pulse amplifying module, a parameter adjusting module, a low-voltage power supply module and a high-voltage power supply module. The pulse amplifying module performs preprocessing such as discriminating, shaping, and amplifying on the pulse signals output by a neutron detector and then inputs the pulse signals to a remote pulse signal acquiring device; the parameter adjusting module outputs control parameters to the pulse amplifying module and the high-voltage power supply module respectively, and the parameter adjusting module is connected to a remote control system; remote setting and adjusting of the control parameters are realized by the remote control system; thelow-voltage power supply module provides the power supply by an external power supply, and provides a working power supply for the pulse amplifying module, the high-voltage power supply module and the parameter adjusting module respectively; the high-voltage power supply module provides a high-voltage power supply signal and a high-voltage mirror signal for the pulse amplifying module. The preprocessing device has the advantages of integration and intelligence, and solves the problems that signal transmitting interference in a existing system is large and the stability for parameter adjustingis low.

Description

technical field [0001] The invention relates to the field of nuclear industry, in particular to a preprocessing device for reactor neutron pulse signals. Background technique [0002] The neutron pulse signal preprocessing device is a device for on-site processing of the output signal of the neutron detector inside the reactor, and is used for the discrimination, shaping and amplification of the neutron pulse signal. The signal processing result of the device is used for the collection of neutron pulse counting of remote nuclear testing equipment. The monitoring of the neutron pulse signal is an important way to obtain the dynamic parameters during the first physical start-up test and operation of the reactor. It is specifically used for neutron counting supervision and reactor criticality extrapolation, which is essential for the safe operation of the reactor. The preprocessing device of the neutron pulse signal is an important guarantee for the monitoring accuracy of the ...

AI Technical Summary

Problems solved by technology

[0003] The existing neutron pulse signal preprocessing device only includes a preamplifier, and the pulse main amplifier for neutron pulse signal screening and the high-voltage power supply for neutron detector work are installed in the remote nuclear testing equipment. The long-distance transmission of the pulse signal between the preamplifier and the main amplifier is susceptible to noise interference, resulting in distortion of the neutron pulse signal acquisition

In addition, the control parameter setting of the existing neutron pulse signal preprocessing device is completed by means of buttons or knobs, which lacks maintainability and parameter stability

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