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Invention Publication
CN103459904A 轴密封装置 失效 - 权利终止

  • Patent Title: 轴密封装置
  • Patent Title (English): Shaft seal arrangement
  • Application No.: CN201280017430.3
    Application Date: 2012-03-26
  • Publication No.: CN103459904A
    Publication Date: 2013-12-18
  • Inventor: 杰西努斯·马特曼
  • Applicant: 西门子公司
  • Applicant Address: 德国慕尼黑
  • Assignee: 西门子公司
  • Current Assignee: 西门子公司
  • Current Assignee Address: 德国慕尼黑
  • Agency: 北京集佳知识产权代理有限公司
  • Agent 张春水; 田军锋
  • Priority: 102011007073.7 2011.04.08 DE
  • International Application: PCT/EP2012/055274 2012.03.26
  • International Announcement: WO2012/136497 DE 2012.10.11
  • Date entered country: 2013-10-08
  • Main IPC: F16J15/34
  • IPC: F16J15/34
轴密封装置
Abstract:
本发明涉及一种用于涡轮机械（CO）的轴密封件（SHS）的轴密封装置（DGSM），其中轴密封装置（DGSM）在一个轴向端部上具有高压侧（HPS）并且在另外的轴向端部上具有低压侧（LPS），所述轴密封件（DGSM）包括：-在运行中旋转的转子部件（RS），-固定的定子部件（CS），-至少一个干燥气体密封件（DGS），-其中在轴密封装置（DGSM）的高压侧（HPS）的端部上以与干燥气体密封件（DGS）串联设置的方式设有用于密封中间空间（IR）的另外的附加轴密封件，所述附加轴密封件包括固定的轴密封部件和旋转的轴密封部件，-其中在周向方向和轴向方向上延伸的中间的轴密封面在第五直径（DSS5）上与旋转轴线（AX）同轴地设置在固定的轴密封部件和旋转的轴密封部件之间，-其中在固定的密封元件（SSE）和定子部件（CS）之间在第四直径（DSS4）上设置第四静止密封件（SS4）以用于相对于第一压差进行密封。提出了，由于第四直径（DSS4）与第五直径（DSS5）的差值小于第五直径的10%，在干燥气体密封件上存在缺陷的情况下，推力变化不引起损伤。
Abstract(English):

The invention relates to a shaft seal arrangement (DGSM) for a shaft seal (SHS) of a turbomachine (CO). The shaft seal arrangement (DGSM) has a high-pressure side (HPS) at one axial end and a low-pressure side (LPS) at the other axial end and comprises a rotor part (RS) that rotates during operation, a fixed stator part (CS), and at least one dry gas seal (DGS), wherein a further additional shaft seal is arranged at the end of the high-pressure side (HPS) of the shaft seal arrangement (DGSM) in a serial arrangement with the dry gas seal (DGS) in order to seal the intermediate space (IR), the further additional shaft seal comprises a fixed shaft seal part and a rotating shaft seal part, a central shaft seal surface that extends in the circumferential direction and in the axial direction is arranged between the fixed shaft seal part and the rotating shaft seal part on a fifth diameter (DSS5) in a coaxial manner with respect to the rotational axis (AX), and a fourth stationary seal (SS4) is arranged between the fixed seal element (SSE) and the stator part (CS) on a fourth diameter (DSS4) in order to seal against the first differential pressure. The aim of the invention is to prevent damage from occurring due to changes of thrust if the dry gas seal is defective. This is achieved in that the difference between the fourth diameter (DSS4) and the fifth diameter (DSS5) is less than 10% of the fifth diameter.

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