DEVICE FOR COMPENSATING ALTERNATING VOLTAGE OCCURRING BETWEEN ENVIRONMENT AND METALLIC PIPING BURIED IN THE ENVIRONMENT
- 专利权人:
- STRI AB
- 发明人:
- JONSSON UNO,KARLSSON DAN
- 申请号：
- CZ19940002109
- 公开号：
- CZ284713(B6)
- 申请日:
- 1993.03.04
- 申请国别(地区):
- 捷克
- 年份:
- 1999
- 代理人:
- 摘要：
PCT No. PCT/SE93/00187 Sec. 371 Date Aug. 23, 1994 Sec. 102(e) Date Aug. 23, 1994 PCT Filed Mar. 4, 1993 PCT Pub. No. WO93/18204 PCT Pub. Date Sep. 16, 1993In a metallic pipeline (1) disposed in the ground, voltages may be induced from adjacent transmission lines and cause corrosion. To reduce the risk of corrosion, voltages are induced in the pipeline with the aid of a transformer (8), which voltages counteract the induced voltages. A measuring conductor (2) provides a signal which is a measure of the induced voltage. In a suitable way, this signal controls the amplitude and phase position of a voltage (U1) which is generated by a converter coupling (7) and is applied to the primary winding of the transformer (8). (FIG. 1a)
- 来源网站：
- 中国工程科技知识中心
