公开(公告)号：US4700014A

公开(公告)日：1987-10-13

申请号：US20848

申请日：1987-03-02

Applicant: Ira L. Joy ,  Arunas A. Arstikaitis ,  James R. Troulias

Inventor： Ira L. Joy ,  Arunas A. Arstikaitis ,  James R. Troulias

IPC: H01B17/26 ,  H01B17/52 ,  B03C3/86

CPC classification number: H01B17/52 ,  H01B17/26

Abstract: A cover cap (40) is provided for covering the open end of a support insulator (38) having a discharge electrode hanger rod (28) passing coaxially therethrough. The cover cap (40) comprises a top (42) and a sloping side wall (44) extending coaxially outwardly and downwardly from the perimeter edge (54) of the top (42) and having a radial lip (46) and an axial lip (48) extending outwardly at substantially right angles to each other from its lower perimeter surface. A tubular gas injection nozzle (92) having an elbow subtending an angle of 135 degrees, is provided in the sloping side wall (44) for passing a jet of scavenging gas into the interior region encompassed by the sloping side wall (44). At least one access opening (70) is provided in the sloping side wall for permitting access into the interior region encompassed by the sloping side wall (44). Lid (72) is provided for covering the access opening (70) in the sloping side wall to seal the opening when the lid is not removed to permit access into the interior region encompassed by the sloping side wall.

Abstract translation: 提供盖帽（40），用于覆盖支撑绝缘体（38）的开口端，该支撑绝缘子具有通过其同轴穿过的放电电极吊架杆（28）。 盖帽（40）包括顶部（42）和从顶部（42）的周边边缘（54）同轴向外并向下延伸的倾斜侧壁（44），并且具有径向唇缘（46）和轴向唇缘 （48）从其下周边表面彼此以基本上直角向外延伸。 在倾斜侧壁（44）中设置有具有对角度为135度的肘管的管状气体注入喷嘴（92），用于使清扫气体的射流通过由倾斜侧壁（44）包围的内部区域。 至少一个进入开口（70）设置在倾斜侧壁中，用于允许进入由倾斜侧壁（44）包围的内部区域。 提供盖（72）用于覆盖倾斜侧壁中的进入开口（70），以在盖未被移除时密封开口，以允许进入由倾斜侧壁包围的内部区域。