Hardness-Based Rapid Testing Method of Cable Insulation Life
A cable insulation and detection method technology, applied in the direction of testing the hardness of materials, etc., can solve the problems of long test period and inability to detect the life of cable insulation in the whole ship
Active Publication Date: 2017-08-04
DALIAN MARITIME UNIVERSITY
View PDF4 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
This method is a destructive experiment. During the experiment, the cable to be tested needs to be intercepted from the ship's power grid; at the same time, it takes a long experiment period to obtain the experimental results; in addition, the working environment of the ship's cables passing through different cabins must be different. This means that the intercepted samples can only represent a part, and cannot detect the insulation life of the entire ship's cables
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0021] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention are clearly and completely described below in conjunction with the embodiments of the present invention:
[0022] In order to apply the hardness-based rapid detection method of cable insulation aging life proposed by the present invention, firstly, a new cable should be used to carry out a rapid aging experiment. Taking a styrene-butadiene rubber cable as an example, according to the IEC 60216 and IEEE383 standards, a rapid aging test was carried out at temperatures of 180°C, 165°C, 150°C, and 135°C. The measured hardness data are shown in Table 1 below.
[0023] Table 1 Sample hardness test data
[0024]
[0025] According to the definition of residual hardness retention rate, the residual hardness retention rate is calculated as shown in Table 2 below.
[0026] Table 2 Residual ...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a method for rapidly detecting the insulation life of a cable based on hardness. The method comprises the following steps: carrying out an ageing experiment on a variety of different cables, and establishing ageing models corresponding to the different cables by acquiring data of the hardness of the insulation layer of each of the cables at different temperatures and times in the ageing experiment process; and analyzing the hardness and the use temperature of the insulation layer of a cable to be detected, and substituting to the ageing models in order to obtain the service life of the insulation layer of the cable to be detected. By adopting the above technical scheme, the method for rapidly detecting the insulation life of the cable based on hardness enables the remaining life of the insulation layer of the cable to be obtained by carrying out hardness test on the insulation position of the ship cable to be examined in experiment and substituting the residual hardness reservation rate F of 45% into the ageing model at a corresponding temperature as the failure standard of the cable. An inspector can momentarily inspect ship cables in different positions on a ship without repeated sampling or a long ageing experiment process.
Description
technical field [0001] The invention relates to a hardness-based rapid detection method for cable insulation life. Involves patent classification number G01 Measurement; Test G01N Tests or analyzes materials by means of determining their chemical or physical properties. Background technique [0002] With the gradual improvement of ship automation and the emergence of electric propulsion ships, the ship's electrical system has become increasingly complex, and ship cables play an important role in the transmission of energy and signals in the ship's electrical system. As we all know, the working environment of ship cables is complex. Under the comprehensive influence of many factors such as temperature, humidity, and mechanical vibration, the cable insulation layer material is easy to age, which will lead to the decline or even failure of the cable insulation performance, which will lead to the failure of the ship's electrical system, and even cause Ship fire. It can be seen...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G01N3/40
Inventor 王鹤荀纪玉龙李根孙玉清
Owner DALIAN MARITIME UNIVERSITY