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Ring seal with sealing surface extension

A sealing surface and ring sealing technology, which is applied in the direction of engine sealing, mechanical equipment, engine components, etc.

Active Publication Date: 2018-10-09
麦克罗弗雷克斯技术公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Each of these seals also has several disadvantages

Method used

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  • Ring seal with sealing surface extension
  • Ring seal with sealing surface extension
  • Ring seal with sealing surface extension

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Experimental program
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Embodiment Construction

[0031] Now especially with reference to Figure 3-5, an exemplary ring seal 300 for sealing opposing flow component sealing surfaces defining a fluid flow path will be described. The terms "lower" and "upper" are expressions with reference to the drawings only and do not necessarily correspond to the orientation of the seal assembly in actual installation. The illustrated ring seal 300 includes an annular seal body 305 defining a shaft bore 310 for passage of fluid in an axial direction as illustrated by arrow 315 . The sealing material should have elastic properties to allow compression and rebound when compressed between elements defining the flow path to provide a good seal along the axial flow path. Seals such as 316 duplex stainless steel, nickel, Hastelloy (HASTELLOY from Central States Industrial Equipment & Service, Inc.) and AL-6XN (from Central States Industrial Equipment & Service, Inc.) are exemplified as suitable materials.

[0032] Opposing sealing surfaces 32...

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Abstract

A ring seal for sealing opposed flow member sealing surfaces defining a fluid flow path is suitable for use in, for example, semiconductor manufacturing module gas delivery systems. Ring seals include annular extensions in the form of varying "triangular regions" extending from one or both sealing surfaces of the ring seal. The varying "triangular region" extends to the apex or tip above the sealing surface of the ring seal. The first extension surface and the second extension surface extend from the apex back in opposite directions towards the sealing surface of the ring seal. In an aspect, the first extending surface defines a ridge, wherein the slope of the first extending surface becomes more rapidly descending towards the sealing surface of the ring seal. In another aspect, the apex is located within the annular extension closer to the axial bore of the annular seal body than to the outer radial diameter of the annular seal body.

Description

technical field [0001] The present invention relates to seals, commonly referred to as gaskets, for forming fluid-tight joints between opposing parallel surfaces. Background technique [0002] A ring seal is generally annular in shape, defining an axially arranged bore for the passage of a fluid (liquid or gas), two axially opposite end faces, a radially inner surface and a radially outer surface. A very simple ring seal has flat end faces and smooth circular inner and outer radial surfaces that define the inner diameter (ID) of the ring seal and outer radial surfaces that define the outer diameter (OD) of the ring seal. However, it is often practical in the industry to use seals with different radial cross-sections to obtain varying sealing capabilities for different fluid flow environments. [0003] One commonly used ring seal is circular with a "C" shaped radial cross-section. These "C-seals" are constructed with the open side of the C-construction facing the center of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16J15/06
CPCF16J15/0887F16J15/0893
Inventor 迈克尔·朵伊勒葛雷葛利·M·朵伊勒詹姆斯·马汀罗杰·派柏
Owner 麦克罗弗雷克斯技术公司