POLE TYPE PROTECTIVE POTENTIAL TEST BOX FOR GAS PIPE
- 专利权人:
- INCHON CITY GAS CO., LTD.
- 发明人:
- KIM, JIN WOO
- 申请号：
- KR20130041482
- 公开号：
- KR20140124135(A)
- 申请日:
- 2013.04.16
- 申请国别(地区):
- 韩国
- 年份:
- 2014
- 代理人:
- 摘要：
The present invention relates to a protective potential test box where a connection terminal, connected to a gas pipeline through electric wires, is installed to measure the protective potential of the underground steel pipeline. The protective potential test box is installed on the ground in a pole type, especially for road, mountains, farmlands, or railroads except for urban areas. The protective potential test box can shorten protective potential measurement time by forming a terminal fixating plate, made of a conductive body and a non-conductive body, inside the test box and fixating a first and a second electric wire (L1, L2) for measuring the protective potential of electron donors (D1, D2) and a third and a fourth electric wire (L3, L4) for measuring the protective potential of a pipeline (P) individually to a measurement terminal in order to remove the need of disassembly work. When the bottom of the body is buried in the ground, a protective coating body installed on the outer circumference of the
- 来源网站：
- 中国工程科技知识中心
