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Self-powered detector insulation resistance online monitoring method and monitoring device

Inactive Publication Date: 2017-03-15
NUCLEAR POWER INSTITUTE OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the existing method for measuring the insulation resistance of a self-powered detector is difficult to realize the online monitoring of the insulation resistance of the detector, and to provide an online monitoring method for the insulation resistance of a self-powered detector that solves the above problems

Method used

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  • Self-powered detector insulation resistance online monitoring method and monitoring device
  • Self-powered detector insulation resistance online monitoring method and monitoring device

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Experimental program
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Embodiment 1

[0028] Self-sufficient detector insulation resistance online monitoring device, such as figure 1 As shown, it includes the self-powered detector body 1, the signal lead-out line 2 connected with the signal core wire in the self-powered detector body 1, and the series resistor R connected in series on the signal lead-out line 2 x , and a current detection device 3 for detecting the current intensity on the signal lead-out line 2; the series resistance R x A control switch 4 is connected in parallel on the top.

[0029] The self-powered detector insulation resistance online monitoring device of this embodiment is made by the above-mentioned connection method, and the self-powered detector body 1 of the above-mentioned self-powered detector insulation resistance online monitoring device is placed in the core, so that the self-powered detector body In the working state, the resistance value of the insulation resistance R of the self-powered detector body 1 is detected by the foll...

Embodiment 2

[0034] The difference between this embodiment and Embodiment 1 is that this embodiment optimizes the type of control switch 4 and adds a shielding layer 5, which is set as follows:

[0035] In this embodiment, the control switch 4 is an electronic switch, and the electronic switch communicates with the control terminal on the electronic switch through the controller to control the switching of the electronic switch. The self-powered detector body 1 is connected in series with a resistor R x A shielding layer 5 is provided on the signal lead-out lines 2 between them, such as figure 1 shown.

Embodiment 3

[0037] The difference between this embodiment and Embodiment 1 is that the specific structure of the self-powered detector body 1 is given in this embodiment, which is set as follows:

[0038] The self-powered detector body 1 includes a central emitter 11 , an insulator 12 , and a collector 13 coaxially arranged from inside to outside, and a signal core wire 14 communicating with the central emitter 11 . The signal core wire 14 is provided with an armored shell 15 , and an insulating material 16 is disposed between the armored shell 15 and the signal core wire 14 .

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Abstract

The invention discloses a self-powered detector insulation resistance online monitoring method and monitoring device, and solves the problem that online monitoring of the insulation resistance of a detector is difficult to realize through the existing self-powered detector insulation resistance measurement method. The self-powered detector insulation resistance online monitoring method comprises the steps that a series resistor R<x> is connected in series on the self-powered detector so that the self-powered detector is enabled to be in the working state, and current I under the condition that the series resistor R<x> is series connected or is not series connected is detected respectively; and the current under the condition that the series resistor R<x> is not series connected is set as I<1> and the current under the condition that the series resistor R<x> is series connected is set as I<2>, and finally the resistance value of the insulation resistor R of the self-powered detector is calculated through a calculation formula R=(I<2>R<x>) / (I<1>-I<2>). Online monitoring of the insulation resistance of the detector can be effectively realized, and the method has the advantages that the detection operation is more convenient and time-saving and labor-saving.

Description

technical field [0001] The invention relates to an online monitoring method, in particular to an online monitoring method for the insulation resistance of a self-powered detector, and discloses a monitoring device for the online monitoring method for the insulation resistance of a self-powered detector. Background technique [0002] Self-powered detectors are common neutron flux measurement detectors in the core, and one of its important performance indicators is insulation resistance. On the one hand, insulation resistance is one of the important bases for judging whether the detector meets the quality requirements; on the other hand, the detector is affected by high temperature and radiation in the stack, which deteriorates the insulation material, leads to a decrease in insulation resistance, and generates noise current , causing detector measurement errors. In engineering, when the insulation resistance is lower than 1MΩ, the detector deteriorates seriously and cannot b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R27/14
CPCG01R27/025G01R27/14
Inventor 包超罗庭芳曾少立李昆朱宏亮杨戴博田宇
Owner NUCLEAR POWER INSTITUTE OF CHINA
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