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Non-contact shaft seals and seal assemblies in internal combustion engines

A technology for internal combustion engines and sealing components, which is applied in the directions of engine sealing, engine components, mechanical equipment, etc., and can solve problems such as reducing strength

Active Publication Date: 2021-02-12
WARTSILA FINLAND OY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Additionally, drilling holes in the shaft significantly reduces the strength of the shaft

Method used

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  • Non-contact shaft seals and seal assemblies in internal combustion engines
  • Non-contact shaft seals and seal assemblies in internal combustion engines
  • Non-contact shaft seals and seal assemblies in internal combustion engines

Examples

Experimental program
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Embodiment Construction

[0027] overall reference figure 1 , figure 2 , Figure 4 and Figure 5 , a non-contact shaft seal 16 is arranged on a shaft 10 extending through the opening 12 in the wall 14 . The shaft has a circular cross section and the shaft has a central axis A extending in the longitudinal direction of the shaft 10 . There is a non-contact shaft seal 16 arranged to the gap between the shaft 10 and the periphery of the opening 12 . Advantageously, the opening 12 in the wall 14 is also circular, so that the gaps are respectively annular. The shaft seal 16 includes a rotor portion 18 and a stator portion 20 . The stator portion is releasably coupled to the wall 14 in a fixed manner. A rotor portion is releasably coupled to the shaft for common rotation with the shaft. The rotor part is arranged radially inside the stator part, where the radial direction refers to the fact that the seal assembly is of circular form and has a common central axis A extending in the longitudinal direct...

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PUM

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Abstract

The invention relates to a non-contact shaft sealing device (16) for sealing a rotatable shaft (10) extending through an opening (12), the device comprising a labyrinth seal (12) and having a stator part (20) and Rotor section (18). The seal arrangement (16) further comprises a blower arrangement (28) arranged to the rotor portion (18) of the shaft seal arrangement (16) at the first axial end (38) of the shaft seal arrangement (16), and is configured to introduce back pressure to the labyrinth seal (22). The invention also relates to a seal assembly in an internal combustion engine (100).

Description

technical field [0001] The invention relates to a sealing assembly in an internal combustion engine, wherein the internal combustion engine is provided with a main body delimiting an internal space of the engine from an external space, and wherein a rotatable shaft is arranged to extend through an opening in the main body. Background technique [0002] As is well known in the art of internal combustion piston engines, such engines include one or more shafts extending outwardly from a body of the engine. Typically, bearings are arranged in relation to the lead-in of the shaft for rotationally supporting the shaft to the body, but at least some seal must exist between the rotating shaft and the fixed body to prevent or at least minimize Entry of dirt into the engine and / or leakage of lubricating media or other fluids present in the engine into the interior of the engine. [0003] A similar problem can arise between different compartments inside the engine where the different ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16J15/40F16J15/447
CPCF16J15/406F16J15/4474
Inventor J·内罗
Owner WARTSILA FINLAND OY