Electric cable with strain sensor and monitoring system and method for detecting strain in at least one electric cable

一种应变传感器、电缆的技术，应用在包括光传输元件的电力电缆、机器/结构部件的测试、通过测量材料受应力时其光学性质的变化力的计量等方向，能够解决没有面对具有光学纤维传感器电缆等问题，达到防止停用事件、节省成本的效果

Active Publication Date: 2012-05-16
PRYSMIAN SPA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0019] This document does not face the problem of cables with fiber optic sensors

Method used

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  • Electric cable with strain sensor and monitoring system and method for detecting strain in at least one electric cable
  • Electric cable with strain sensor and monitoring system and method for detecting strain in at least one electric cable
  • Electric cable with strain sensor and monitoring system and method for detecting strain in at least one electric cable

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Embodiment Construction

[0067] Figure 1a and 1b A perspective view and a cross-sectional view of a cable according to an embodiment of the invention are shown, respectively. The illustrated cable of this embodiment may be suitable for heavy duty applications, more particularly mobile devices. The cable 1 is a round cable comprising three cores 2 arranged radially about the central longitudinal axis Z of the cable (in Figure 1avisible in ) around. Core 2 may provide three-phase power transmission. The cable 1 may be a low or medium voltage cable, where low voltage means voltages up to 1 kV and medium voltage means voltages from 1 kV to 60 kV. Each core 2 comprises an electrical conductor 12, for example a copper conductor formed from a bundle of tinned or bare copper wires twisted together according to conventional methods. In a radially outer position relative to each electrical conductor 12 , an inner semiconducting layer 13 , an insulating layer 16 , an outer semiconducting layer 17 are sequen...

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Abstract

An electric cable comprising a strain sensor longitudinally extending along the cable and including a strain optical fibre arranged within a bending neutral region surrounding and including a bending neutral longitudinal axis of the electric cable, and at least two longitudinal structural elements, at least one of the at least two longitudinal structural elements being a core comprising an electrical conductor, wherein the strain sensor is embedded in a strain-transferring filler mechanically coupling at least one of the at least two longitudinal structural elements with the strain sensor. With the disclosed cable construction, the strain experienced by the at least one of the at least two longitudinal structural elements is transferred to the strain sensor at least in a strained condition. In the preferred embodiments, the electric cable is a heavy-duty cable. The invention relates also to a method for monitoring the strain, and preferably also the temperature, of an electric cable. Further, the invention is directed to a deformation monitoring system for measuring at least the tensile strain of a plurality of electric cables, and in particular of a plurality of heavy-duty cables.

Description

technical field [0001] The invention relates to a cable with an integrated strain sensor particularly suitable for the measurement of static and dynamic tensile strain. [0002] The invention also relates to a monitoring method and system for at least measuring strain in at least one cable. [0003] The invention also relates to a monitoring system and method for detecting strain in a plurality of electrical cables. In particular, the present invention relates to a monitoring system and method for monitoring multiple cables installed in a mobile device using the Brillouin backscatter technique. Background technique [0004] Especially cables for heavy-duty applications and / or for mobile installations such as mobile harbor cranes, ship-to-shore container cranes, ship unloaders, paving machines and tunnel mining equipment are specifically designed to withstand harsh environments conditions and high mechanical stresses such as tension and torque. As another example of cables...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B7/32G01L1/24
CPCG01K2011/322H01B7/041H01B9/005H01B7/32G01L1/242G01M11/086G01K11/32D07B1/145D07B2301/259D07B2301/5577G01K11/322
Inventor D·萨尔基B·克尼普费尔C·克姆尼茨R·盖斯帕里A-G·卡尔E·孔松尼T·基特尔R·埃瓦尔德
Owner PRYSMIAN SPA
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