Crack opening displacement measuring device

A technology for displacement measurement and cracks, which is applied to measuring devices, using stable tension/pressure to test the strength of materials, instruments, etc., can solve problems such as inability to withstand high temperatures, short-circuit of strain gauges, and failure to work normally, achieving low cost and easy operation Convenience and high flexibility

Pending Publication Date: 2017-12-08
CHINA NUCLEAR POWER TECH RES INST CO LTD +2
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the strain gauge will short-circuit in the conductive medium and cannot withstand high temperature, so it cannot work normally in the high-temperature corrosive conductive medium

Method used

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Experimental program
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Embodiment Construction

[0033] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation manners of the present invention will now be described in detail with reference to the accompanying drawings.

[0034] Such as figure 1 , 2 As shown, the crack opening displacement measurement device according to an embodiment of the present invention includes a closed container 10 for holding a high-temperature corrosive conductive medium, a heating unit 20 for heating the closed container 10, and a first fixing device for fixing the sample 1. 31 and the second fixing member 32, the first connecting rod assembly 40 and the second connecting rod assembly 50 that lead out the displacement of the crack opening on the sample 1, the first displacement sensor 61 and the second displacement sensor 61 that measure the crack opening drawn out sensor 62.

[0035] Wherein, the first fixing part 31 and the second fixing part 32 are relati...

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Abstract

The invention discloses a crack opening displacement measuring device which comprises a sealed container, a heating unit, a first fixing part, a second fixing part, a first connecting rod component, a second connecting rod component, a first displacement sensor and a second displacement sensor, wherein the sealed container is used for containing a high-temperature corrosion conductive medium; the first fixing part and the second fixing part are used for fixing test samples; the first fixing part and the second fixing part are oppositely arranged inside the sealed container; the first displacement sensor and the second displacement sensor are arranged on the sealed container; the first connecting rod component and the second connecting rod component are respectively connected between a test sample and the first displacement sensor and between the test sample and the second displacement sensor on a thickness cross section of the test sample. By adopting the crack opening displacement measuring device disclosed by the invention, precise measurement measures for testing elastic-plastic cracking toughness and fatigue crack spreading rates of a high-temperature corrosion conductive liquid medium cooling reactor material in complex special environments are provided.

Description

technical field [0001] The invention relates to a measuring device, in particular to a crack opening displacement measuring device. Background technique [0002] High-temperature corrosive conductive media (such as high-temperature and high-pressure water, liquid lead, lead-bismuth eutectic alloy, sodium and other alkali metals) are important coolants for advanced nuclear energy systems. The compatibility between coolant and material is an important index to evaluate the safety performance of nuclear system. For example, liquid metal (such as liquid pure lead or lead-bismuth alloy, etc.) cooled fast reactor can realize nuclear fuel multiplication, reduce nuclear waste and improve the effective utilization of nuclear fuel, and is currently one of the most promising fourth-generation reactor technologies generally recognized in the world one. [0003] The safety of the new reactor largely depends on whether the structural materials can withstand long-term assessments in extr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/18G01B21/02
CPCG01B21/02G01N3/18G01N2203/0226G01N2203/024G01N2203/0066
Inventor 龚星刘彤吕先锋李锐任啟森刘洋薛佳祥李雷黄恒武海龙严俊李思功
Owner CHINA NUCLEAR POWER TECH RES INST CO LTD
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