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Method for measuring pressure of installation interface of cable central connector based on piezoresistive film

A technology for cable intermediate joints and installation interfaces, which is applied to the measurement of the property force of piezoelectric resistance materials, force/torque/power measuring instruments, measuring devices, etc., and can solve problems such as detachment

Inactive Publication Date: 2018-09-14
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
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Problems solved by technology

Therefore, there is a large gap in the field of actual measurement, and the existing method is separated from the cable structure, and this method cannot be used in the actual measurement of the interface pressure of the cable intermediate joint.

Method used

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  • Method for measuring pressure of installation interface of cable central connector based on piezoresistive film
  • Method for measuring pressure of installation interface of cable central connector based on piezoresistive film
  • Method for measuring pressure of installation interface of cable central connector based on piezoresistive film

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Embodiment

[0037] A piezoresistive film-based method for measuring the interface pressure of a cable intermediate joint installation, the specific steps comprising:

[0038] (1) Select a suitable piezoresistive film sensor and the structure of the cable intermediate joint to be tested; select multiple sections on the cable intermediate joint structure, and each section is placed at a certain position as the piezoresistive film sensor.

[0039] In this embodiment, a piezoresistive film sensor with a piezoresistive film thickness of 0.1 mm, a high-voltage cable at both ends and a connecting accessory of a middle joint are selected. Select a section on the middle joint structure, set the corresponding three positions of 12 o'clock, 6 o'clock and 9 o'clock on the section as the placement points of the piezoresistive film sensor, select multiple sections in the same structure, and select them in the same way The placement point of the sensor.

[0040] (2) Determine the position and wiring of...

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Abstract

The invention discloses a method for measuring the pressure of an installation interface of a cable central connector based on a piezoresistive film, and the method comprises the steps: (1), selectinga plurality of sections from a cable central connector structure, and selecting a placement point for a piezoresistive film sensor on each section; (2), determining the position of a lead wire, wherein the direction of the lead wire is a cable direction, and is parallel to the axial direction of a sensor, and marking the sensor placement point and the lead wire; (3), grinding of the section of the sensor placement point; (4), digging a trench along a drawn line; (5), enabling the sensor to be connected with the lead wire, pasting the sensor, and coating the sensor with a silicone grease layerafter pasting; (6), placing the lead wire along the trench, and connecting the lead wire to a signal amplifier; (7), carrying out the filling of a part, which is not filled, of the trench; (8), wiping the insulating surface of a cable, and starting the measurement after wiping. The method can be used for the actual measurement of the pressure of the installation interface of the cable central connector on the basis of an actual cable structure.

Description

technical field [0001] The invention belongs to the field of pressure measurement on the installation interface of a cable intermediate joint, and in particular relates to a pressure measurement method for an installation interface of an intermediate cable joint based on a piezoresistive film. Background technique [0002] The pressure on the installation interface of the middle joint of the high-voltage cable is the key to ensure the normal operation of the cable. If the interface pressure of the joint is not enough, it will lead to serious safety accidents such as explosion of the cable joint, so the middle joint of the cable is the weakest link of the power transmission system and a typical part of the operation failure. Therefore, how to measure the pressure at the installation interface of the high-voltage cable intermediate joint becomes particularly important. [0003] At present, there are relatively few studies on the measurement of the interface pressure at home a...

Claims

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Application Information

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IPC IPC(8): G01L1/18G01L5/00
CPCG01L1/18G01L5/008
Inventor 刘刚韩卓展林泽康
Owner SOUTH CHINA UNIV OF TECH
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