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Coil self-inductance based control rod position measuring system

A measurement system and control rod technology, which is applied in the field of reactor measurement and control, can solve the problems of large sensor volume, primary coil damage, and overall system failure, and achieve the effects of reducing installation difficulty, volume reduction, and easy production

Active Publication Date: 2009-04-29
TSINGHUA UNIV
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Problems solved by technology

[0008] The purpose of the present invention is to solve the problem that the sensor in the existing inductive rod position measurement system is large in size, difficult to manufacture, and the damage of the primary coil will cause the overall failure of the system. The present invention provides a control rod based on the principle of coil self-inductance Bit measurement systems include:

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  • Coil self-inductance based control rod position measuring system
  • Coil self-inductance based control rod position measuring system

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Embodiment Construction

[0018] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0019] Such as figure 1 As shown, the present invention provides a control rod rod position measurement system based on the principle of coil self-inductance, including a rod position measurement sensor composed of a group of self-inductance measurement coils 1 and auxiliary signal circuits for position measurement. Respective inductive measurement coils are independent, respectively corresponding to their respective auxiliary signal circuits; a reference signal sensor composed of a self-inductance reference coil 2 and its auxiliary signal circuit, the self-inductance reference coil and its auxiliary signal circuit are connected to the rod The self-inductance measuring coil of the position measuring sensor and its auxiliary signal circuit have the same structure to generate a reference signal; a measuring mandrel 3 connected to the control rod and composed of...

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Abstract

The disclosed single-coil measurement system for position of control rod based on coil self-induction principle in reactor measuring and controlling technique comprises a measurement sensor for rod position, a reference signal sensor, a measurement mandrel space arranged with the magnetic inductive material and non-inductive material connected to the control rod, and the information processing device with ADC to analyze by the dc signal with linear relation with self-inductive voltage from sensors. This invention has small volume and stable running with convenient maintenance to provide security guarantee for reactor.

Description

technical field [0001] The invention belongs to the technical field of reactor measurement and control, and relates to a rod position measurement system of a reactor control rod, in particular to a reactor control rod rod position measurement system based on a sensor working on the principle of coil self-inductance. Background technique [0002] Control rods and their driving mechanisms are important devices to ensure the safe operation of reactors. Under normal working conditions, by adjusting the position of the control rods, the normal start-up and shutdown of the reactor can be realized, so that the reactor can operate at a given power level or the reactor power can be adjusted; core reactivity, thereby enabling emergency shutdown. The rod position measurement system is one of the most important systems in the device, and its reliability and safety are related to the normal operation and safety of the entire reactor. [0003] At present, the reactor control rod positio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G21C17/10
CPCY02E30/30
Inventor 李胜强张佑杰李德重杨念祖刘志勇杨星团
Owner TSINGHUA UNIV
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