公开(公告)号：WO2015028264A3

公开(公告)日：2015-06-11

申请号：PCT/EP2014066797

申请日：2014-08-05

Applicant: ABB TECHNOLOGY AG

Inventor： IORDANIDIS ARTHOUROS ,  SEEGER MARTIN ,  DOUSSET VINCENT ,  GALLETTI BERNARDO ,  PANOUSIS EMMANOUIL ,  LEHMANN JOERG ,  PISU FRANCESO ,  DHOTRE MAHESH ,  OVER DANIEL

IPC: H01H33/95 ,  H01H33/70 ,  H01H33/88 ,  H01H33/91

CPC classification number: H01H33/703 ,  H01H1/385 ,  H01H9/302 ,  H01H33/91

Abstract: The gas-insulated high-voltage switchgear includes a contact arrangement that is enclosed in a housing (10) and has two arc contacts in a coaxial arrangement, namely a tulip contact (20) with a constriction and a contact pin (30), said contacts being movable relative to each other along an axis (A). The switchgear also includes two insulating nozzles (40, 50) which are held at a distance to each other in the axial direction. The first (40) of the two insulating nozzles has a first flow channel (41), which is led along the axis and which comprises a first constriction (42), and the second (50) has a second flow channel (51), which is led along the axis and which has a second constriction (52). In the switchgear, the tulip contact (20) is arranged in a first flow channel (41) outflow section (43) which is arranged downstream of the first constriction (42). The sum of the flow cross-sections (Ακ, ΑΣ) of the constriction of the tulip contact (20) and of a third constriction arranged in the outflow section (43) is greater than the flow cross-section (An) of the first constriction (42), wherein a first sub-flow (L11) of a quenching gas flow (L1) can be conducted through the constriction of the tulip contact (20), and a second sub-flow (L12) which is oriented parallel to the first sub-flow (L11) can be conducted through the third constriction. In this manner, the dielectric restoration of an isolating gap which can be found in the arc zone (L) is improved upstream of the tulip contact (20), and the breaking capacity and the operating reliability of the switchgear are thus increased.

Abstract translation: 所述的气体绝缘高压开关，其包括在壳体（10）封闭的接触装置，所述两个沿具有同轴布置（A）可相对移动电弧触头，即郁金香触头（20），具有收缩和接触销（30）的轴线和两个Isolierdüsen （40，50），其在有间隙的轴向方向上保持到彼此。 所述两个Isolierdüsen的（40）具有被引导的纵向具有第一缩颈（42）和第二（50）具有一个第二收缩所述第二流动通道的纵向引导的轴（51）的第一流动通道（41）的轴线（52） ， 在这种开关中，郁金香触头（20）布置在所述第一流动通道（41）的第一收缩（42）流出部（43）的下游。 郁金香触头（20）和一个在所述流出部（43）的收缩的流动横截面（Ακ，ΑΣ）的总和设置成第三收缩大于第一缩颈（42）的流动横截面（安）时，由接触郁金香的变窄（20） 淬火气流（L1）和平行于由第三缩小第二部分流动（L12）执导的第一部分流（L11）的第一部分流（L11）能够被引导。 其特征在于所述电介质再凝固位于电弧区（L）的隔离距离提高了郁金香触头（20）等的电路分断和开关的操作可靠性可以增加的上游。