Mechanical sealing system and method for rotary machines

A technology for rotating machinery and machinery, applied in the field of sealing systems, which can solve problems such as reduced mechanical efficiency, high sealing gas consumption, and overheating of mechanical components

Inactive Publication Date: 2008-09-10
GENERAL ELECTRIC CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Less sealing gas flowing through the gap between the rotating ring and the stationary ring will cause overheating of the mechanical parts of the seal, eventually leading to seal failure
Excessive seal gas flow through the gap between the rotating and stationary rings will result in high seal gas consumption and reduced mechanical efficiency

Method used

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  • Mechanical sealing system and method for rotary machines
  • Mechanical sealing system and method for rotary machines
  • Mechanical sealing system and method for rotary machines

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Embodiment Construction

[0019] [0019] As described in detail below, embodiments of the present invention provide a rotating machine in which a fluid seal is provided between the machine rotor and the machine stator. The typical fluid seal includes a fluid-tight stator, a fluid-tight rotor, and an automatic gap control mechanism coupled to the fluid-tight stator. This typical fluid seal configuration controls the flow (or flow) of sealing fluid through the gap between the fluid seal stator and the fluid seal rotor. In an exemplary embodiment, the automatic gap control mechanism includes a plurality of electromagnetic devices coupled to the fluid-tight stator. In another exemplary embodiment, the automatic gap control mechanism includes an electromechanical device, such as a piezoelectric device or a shape memory alloy device, coupled to the fluid-tight stator. The automatic gap control device according to the exemplary embodiment of the present invention can prevent contact between the fluid-tight st...

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Abstract

The invention relates to a mechanical sealing system and method for rotary machines. A rotary machine (10) includes a machine rotor (12), a machine stator (14), and a fluid seal (16) disposed between the machine rotor (12) and the machine stator (14). The fluid seal (16) includes a fluid seal stator (18), a fluid seal rotor (20), and an active gap control mechanism (44) coupled to the fluid seal stator (18). The fluid seal (16) is configured to control a gap (22) between the fluid seal stator (18) and the fluid seal rotor (20).

Description

technical field [0001] [0001] The present invention relates generally to rotating machinery, and more particularly to a sealing system for a contact surface (or interface) between a rotating component and a stationary component. In certain aspects, the sealing system includes a mechanical sealing system between the rotating shaft of the turbocompressor and the surrounding structure. Background technique [0002] [0002] The performance and efficiency of rotating machinery, such as turbo compressors, depend on clearances between rotating and stationary components within a turbine engine. For example, the gap between the rotating shaft and the surrounding stationary housing provides a narrow fluid path leading to leakage of working fluid which reduces the performance of the rotating machine. When the gap between rotating and stationary parts increases, leakage increases and mechanical efficiency decreases. [0003] [0003] Dry gas seals are employed in rotating machines such a...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): F16J15/46
CPCF16J15/346F16J15/3436F16J15/3492F16J15/3444F04B39/00F04B53/02F16J15/43
InventorM·B·施米茨R·M·鲁斯特德M·萨尔希E·J·鲁吉罗L·巴尔塔萨尔
OwnerGENERAL ELECTRIC CO