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Interface pressure measuring method and measuring device for cable cold shrink joint

A technology for measuring devices and cables, applied in measuring devices, force/torque/work measuring instruments, instruments, etc., can solve problems such as the inability to guide the measurement of the stress of the ring structure of the cold shrinkable tube

Active Publication Date: 2020-11-27
STATE GRID JIANGSU ELECTRIC POWER CO ELECTRIC POWER RES INST +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

GBT528-2009 only stipulates the stress measurement and related calculation in the same stretching direction when the rubber part is stretched, and cannot guide the stress measurement in the ring structure of the cold shrink tube

Method used

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  • Interface pressure measuring method and measuring device for cable cold shrink joint
  • Interface pressure measuring method and measuring device for cable cold shrink joint
  • Interface pressure measuring method and measuring device for cable cold shrink joint

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Experimental program
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Embodiment Construction

[0041] Such as figure 1 As shown, the present invention is an interface pressure measurement device for cable cold-shrink joints, the device body 8 is installed in the housing 12, and the film sensor 5 is connected to the sensor adapter 4 of the device body 8 through the external film FPC cable 9 . An LCD display screen 6 penetrating through the housing is provided on the upper surface of the housing 12 .

[0042] Such as figure 2 As shown, the device body 8 includes an MCU control chip 1 , and the sensor signal from the sensor interface 4 is input to the MCU control chip 1 through the linearization module 3 . The MCU control chip 1 sends the calculated pressure value to the LCD display screen 6 for display. The power supply system 2 supplies power to the MCU control chip 1 . The aforementioned MCU control chip 1 , linearization module 3 , sensor transfer interface 4 and LCD display screen 6 are all integrated on the same circuit board. The power supply system 2 is conne...

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PUM

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Abstract

The invention discloses an interface pressure measuring device and an interface pressure measuring method for a cold shrink joint of a cable. By adopting an array type film sensor with the optimized size, the defect that only one point or one small-range interface pressure can be measured by a single sensor at a time is overcome, the pressure values of multiple points are measured at a time in anarray mode, and the whole interface pressure is rapidly and accurately obtained; meanwhile, pressure measuring points cannot influence one another. In the measuring process, each pressure measuring point is stressed averagely, and the problem that in the prior art, the stress condition of each pressure measuring point is difficult to determine during calibration is solved.

Description

technical field [0001] The invention relates to an interface pressure measurement method and a measurement device for cable cold-shrink joints, belonging to the field of start-up and debugging of ultra-ultra-high voltage power transmission and transformation projects. Background technique [0002] The cable intermediate joint is an important part of the distribution network cable line, which can extend the length of the cable line while maintaining the cable insulation performance, so as to ensure the continuity and integrity of the cable line. With the advantages of reasonable volume, easy installation, and fewer product specifications, the cold-shrinkable intermediate joint has developed rapidly in the past 20 years, basically replacing other types of intermediate joints, and has been widely used. The cold-shrink intermediate joint relies on the cold-shrink tube to form an interference fit with the cable body to generate interface pressure, thereby ensuring the insulation ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L5/00
CPCG01L5/00
Inventor 陈杰胡丽斌刘洋何嘉弘李陈莹谭笑张昱
Owner STATE GRID JIANGSU ELECTRIC POWER CO ELECTRIC POWER RES INST