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发明公开
CN107109957A 流体机械的轴密封结构和用于密封流体机械的轴的方法 无效 - 撤回

流体机械的轴密封结构和用于密封流体机械的轴的方法
摘要：
本发明涉及轴密封结构，其包括串联地配置在大气侧(16)与待被密封的产品侧(15)之间的第一密封部(1)、第二密封部(2)和第三密封部(3)，其中，所述第二密封部(2)配置在所述第一密封部(1)与所述第三密封部(3)之间，在朝向所述产品侧(15)的方向上与所述第二密封部(2)相邻的空间(6；61)中存在有第一压力(P1)，在朝向所述大气侧(16)的方向上与所述第二密封部(2)相邻的空间(7；71)中存在有第二压力(P2)，与所述大气侧(16)相邻的空间(7；71)连接至压力供给线路(25)，经由所述压力供给线路(25)，能够将压力介质供给到该空间中，并且所述第一压力(P1)与所述第二压力(P2)相等或大致相等，使得所述第二密封部(2)能够在所述第一压力(P1)与所述第二压力(P2)之间的压力差为零的情况下运行。
摘要（英）：

The invention relates to a shaft seal arrangement, comprising a first seal (1), a second seal (2) and a third seal (3) which are arranged in series between a product side (15) which is to be sealed and an atmosphere side (16), wherein the second seal (2) is arranged between the first seal (1) and the third seal (3), wherein a first pressure (P1) prevails in a space (6; 61) adjoining the second seal (2) in the direction of the product side (15), and a second pressure (P2) prevails in a space (7; 71) adjoining the second seal (2) in the direction of the atmosphere side (16), wherein the space (7; 71) adjoining in the direction of the atmosphere side (16) is connected to a pressure supply line (25) via which a pressure medium can be supplied to the space, and wherein the first pressure (P1) is equal or essentially equal to the second pressure (P2), such that the second seal (2) can be operated with a pressure difference, between the first pressure (P1) and the second pressure (P2), of zero.

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