Soil breakdown field strength test device for safety assessment of buried pipeline below power grid

• Main Authors: KOU XIAOSHI, GUO LEI, XU BICHUAN, DING LIANG, ZHANG JINPENG, DONG MANLING, ZHANG KE
• Format: Patent
• Language: Chinese; English
• Published: 25.02.2022
• Subjects: MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PHYSICS; TESTING

The invention discloses a soil breakdown field strength testing device for safety assessment of a buried pipeline below a power grid, and the soil breakdown field strength testing device is used for testing to determine the breakdown field strength of soil where the pipeline is located. The soil breakdown field strength test device comprises a soil container, test soil filled in the soil container, a buried pipeline model buried in the test soil, a needle electrode inserted into the test soil, and a lightning impulse voltage generator connected with the needle electrode, a negative impulse voltage waveform with the wave head/wave tail time of 1.2/50us is generated through a lightning impulse voltage generator and is applied to test soil through a needle electrode, the needle electrode is connected with a voltage divider, and the voltage divider is connected with an oscilloscope. According to the invention, the soil breakdown field strength test device is adopted to carry out impact tests on soil with differen