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System for on-line monitoring health of tippler based on optical fiber and optical grating sensing

A health monitoring system and fiber grating technology, applied in the direction of using optical devices to transmit sensing components, machine/structural component testing, measuring devices, etc., can solve the problem of less application of fiber grating sensing technology

Inactive Publication Date: 2008-08-27
WUHAN UNIV OF TECH
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Problems solved by technology

However, the application of fiber grating sensing technology in large-scale equipment is still rare, especially in the health status monitoring of dumpers is still a blank

Method used

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  • System for on-line monitoring health of tippler based on optical fiber and optical grating sensing
  • System for on-line monitoring health of tippler based on optical fiber and optical grating sensing
  • System for on-line monitoring health of tippler based on optical fiber and optical grating sensing

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specific Embodiment approach

[0036] Step 1: Analyze the structure of the dumper according to the design drawings, establish a model, find the key points, and optimize the layout plan: the dumper consists of an end ring, a U-shaped ring, a front beam, a rear beam, a bottom beam, a press beam, and a car. Composed of plates, tie rods, etc. The structure of the dumper is complex in stress. According to the stress state of each main part, the selected layout scheme (Figure 2) is as follows:

[0037] A total of 44 FBG strain sensors and 4 FBG temperature compensation sensors are arranged. Strain sensors are arranged at 19 measuring points, among which,

[0038] End ring: 4×3 (arrange 4 measuring points, each measuring point has 3 strain sensors to form a strain rosette)

[0039] Platform girder: 4×2 (arrange 4 measuring points: 4 measuring points each with two strain sensors, at right angles);

[0040] At the slope of the lower part of the U-shaped frame: 3×3 (3 measuring points are arranged, and each measur...

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Abstract

The invention relates to a tipping apparatus on-line health monitoring system based on optical fiber and raster sensing, which consists of a distributed optical fiber and raster sensor, a optical fiber and raster demodulator, a signal processing system, a database management system and an on-line monitoring and evaluating system; a method comprises the following steps: the first step: a tipping apparatus model is established and a measuring point is determined; the second step: the optical fiber and raster sensor for being detected is determined; the third step: the optical fiber and raster demodulator is determined; the fourth step: the calculation of resultant stress: according to a strain value, a resultant stress value of the measuring point is calculated; the fifth step: the analysis of a tipping apparatus state: through analyzing the stress condition of the key measuring point, a health state of the tipping apparatus is obtained. Through the on-line monitoring of the health state of the tipping apparatus, the tipping apparatus on-line health monitoring system can find out the fault trend of the tipping apparatus in time, remove the incipient fault and solve the bottleneck problem in a large-scale material field, in particular in a large-scale port.

Description

technical field [0001] The invention belongs to the field of on-line monitoring of large equipment, in particular to an on-line health monitoring system of a dumper based on fiber grating sensing. Background technique [0002] With the rapid development of the economy, the application of large equipment is becoming more and more extensive. The dumper is a high-efficiency large-scale mechanized unloading equipment, which has been widely used in the storage yards of large enterprises such as metallurgy, power generation, chemical industry and ports. The dumper is one of the most complex and critical equipment in the loading and unloading system. Its health directly affects the operating efficiency of the system. It is the bottleneck equipment in large material yards, especially in large ports. Following the modern maintenance concept of "replacing time-based preventive maintenance with advanced predictive maintenance", in order to realize predictive maintenance and enable the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M19/00G01D5/26G01M99/00
Inventor 周祖德姜德生刘泉梁磊徐长生李景松李方敏
Owner WUHAN UNIV OF TECH
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