公开(公告)号：US3900912A

公开(公告)日：1975-08-26

申请号：US37904473

申请日：1973-07-13

Applicant: TEXACO AG

Inventor： LENZ MANFRED ,  REYNOHS PAUL ,  WESTEN WILLI

IPC: B08B9/04 ,  B08B9/055

CPC classification number: B08B9/0553 ,  F16L2101/12

Abstract: A paraffin scraper for pipelines. It is the type commonly called a pig, which is driven through the pipeline by fluid pressure in the pipeline. It has a solid plastic cylindrical shape with a number of annular recesses. In addition, there is a smalldiameter axial bore extending through the whole length of the body to create a jet-fluid stream at the front during scraping action.

Abstract translation: 用于管道的石蜡刮板。 它是通常称为猪的类型，其通过管道中的流体压力被驱动通过管道。 它具有固定的塑料圆柱形形状，具有许多环形凹槽。 另外，在刮削动作期间，存在延伸穿过主体整个长度的小直径轴向孔，以在前部产生喷射流体流。