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Periodic test device and method for instrument control system of nuclear power plant, medium and electronic equipment

An instrument control system and periodic test technology, applied in the field of nuclear power, can solve the problems of test signal input, frequent plugging and unplugging of wiring terminals, etc., and achieve the effect of improving test efficiency

Pending Publication Date: 2022-02-25
NUCLEAR POWER INSTITUTE OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The technical problem to be solved by the present invention is that frequent plugging and unplugging of wiring terminals is required in the test of the digital instrument control system. The problem of the test signal input of the control system

Method used

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  • Periodic test device and method for instrument control system of nuclear power plant, medium and electronic equipment
  • Periodic test device and method for instrument control system of nuclear power plant, medium and electronic equipment

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0065] This implementation provides a periodic test device for the instrument and control system of a nuclear power plant, including a terminal unit, a test unit and a maintenance unit.

[0066] The terminal unit is installed on the instrument control system, and is electrically connected with the circuit inside the instrument control system, so as to realize the purpose of signal input, and the input signal includes actual signal and test signal.

[0067] The signal output terminal of the test unit is electrically connected to the terminal unit, and the test signal is output through the test unit, and finally input into the instrument control system through the terminal unit.

[0068]The signal input terminal of the maintenance unit is electrically connected with the maintenance signal output terminal of the instrument control system, the signal output terminal of the maintenance unit is electrically connected with the signal input terminal of the test unit, and the maintenanc...

Embodiment 2

[0077] The actual signal terminal 3 is a normally connected structure, which can be connected by a practical terminal at the present stage. This embodiment provides the structure of the test signal terminal 2. The test signal terminal 2 includes a terminal body and a test signal paddle.

[0078] The terminal body is fixedly arranged on the printed board 1, and is electrically connected to the signal input end of the instrument control system. The terminal body is provided with a plurality of signal jacks, and the connection between the terminal body and the instrument control system is controlled by the first embodiment above. It can be controlled by the controller, and you can choose whether to connect to the instrument control system according to your needs.

[0079] The test signal pick is adapted to the signal jack, and when the regular test is not carried out, the test signal pick is set in the signal jack. The main function of the test signal pick is to block the signal j...

Embodiment 3

[0084] This embodiment illustrates the structure of the test unit, which includes a host computer, a signal source and a test signal connector.

[0085] The signal input end of the upper computer is electrically connected with the signal output end of the maintenance unit, and the upper computer is a movable stand-alone

[0086] The control terminal of the signal source is electrically connected to the control terminal of the host computer. The signal source includes analog signal source and digital signal source. The types of analog signal source include mA active, mA passive, TC-K type, TC-N type, PT100 , pulsed square wave, digital source types include dry node and wet node.

[0087] The output end of the signal source is electrically connected to the test signal connector. The test signal connector is provided with a signal pin that is compatible with the signal jack. The signal from the signal source is injected into the instrument control system through the test signal c...

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Abstract

The invention discloses a periodic test device and method for an instrument control system of a nuclear power plant, a medium and electronic equipment. The periodic test device comprises a terminal unit, a test unit and a maintenance unit, wherein the terminal unit is installed on the instrument control system, the signal output end of the test unit is electrically connected with the terminal unit, the signal input end of the maintenance unit is electrically connected with the maintenance signal output end of the instrument control system, and the signal output end of the maintenance unit is electrically connected with the signal input end of the test unit; and the terminal unit comprises an actual signal terminal and a test signal terminal, and the actual signal terminal is in hard wiring connection with an on-site sensor of the nuclear power plant. According to the invention, the terminal unit is provided with the actual signal terminal and the test signal terminal, so that when a test is carried out, hard wiring of an on-site sensor is not dismounted, a test signal is injected through the test signal terminal, and complexity and possible risks caused by repeated dismounting and connecting of a wiring terminal are avoided.

Description

technical field [0001] The invention relates to the technical field of nuclear power, in particular to a periodic test device, method, medium and electronic equipment for an instrument and control system of a nuclear power plant. Background technique [0002] According to the design guidelines of nuclear power plants, during normal operation and refueling maintenance, nuclear power plants need to conduct regular tests on the digital instrument and control system according to the established plan to confirm the function and performance of the instrument and control system. [0003] Periodic tests include T1, T2, T3, among which T1 test is a regular test of input channels, the purpose is to verify the accuracy of analog input channels and the usability of digital input channels, and the test objects include all hard contact input channels of the instrument control system , is the test with the largest amount of testing in the periodic test. [0004] T1 test can be carried out...

Claims

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Application Information

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IPC IPC(8): G05B23/02
CPCG05B23/0256
Inventor 陈阳刘明明贺先建吴志强王远兵彭浩陈钊邓兴陈
Owner NUCLEAR POWER INSTITUTE OF CHINA