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Self-Centering Metal-To-Metal Seals For Use With Valves

A technology of metal sealing and sealing unit, applied in the direction of lift valve, valve device, mechanical equipment, etc., can solve the problem of easy leakage of geometric shape

Active Publication Date: 2017-03-08
艾默生过程管理调节技术塔尔萨有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This geometry is also prone to leaks due to scarring of minimal sealing surface area

Method used

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  • Self-Centering Metal-To-Metal Seals For Use With Valves
  • Self-Centering Metal-To-Metal Seals For Use With Valves
  • Self-Centering Metal-To-Metal Seals For Use With Valves

Examples

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Embodiment Construction

[0020] Certain examples are shown in the figures identified above and described in detail below. In describing these examples, like or identical reference numbers are used to identify the same or similar elements. The figures are not necessarily drawn to scale and certain features and certain views in the figures may be shown exaggerated in scale or diagram for clarity and / or conciseness.

[0021] The exemplary devices described herein provide self-centering metal-to-metal seals for valve applications. Unlike current metal-to-metal seals that implement knife-edge and disc geometry with respect to the plug and seat, the exemplary devices described herein include a plug and seat with respective metal sealing surface. The complementary curved profile increases the surface area of ​​the resulting metal-to-metal seal and provides a self-centering metal-to-metal seal. The increased surface area of ​​the disclosed metal-to-metal seal requires less polishing relative to known metal...

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PUM

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Abstract

Self-centering metal-to-metal seals for use with valves are described herein. An example apparatus includes a disc-shaped valve plug having a first metallic sealing surface extending circumferentially about a peripheral edge of the valve plug. The first metallic sealing surface has a first curved profile. The example apparatus further includes a valve seat defining an orifice and having a second metallic sealing surface having a second curved profile that is complimentary to the first curved profile so that the first and second metallic sealing surfaces form a metal-to-metal seal when the first and second metallic sealing surfaces are in contact.

Description

technical field [0001] The present disclosure relates generally to metal-to-metal seals and, more particularly, to self-centering metal-to-metal seals for valves. Background technique [0002] Certain valve applications may require the mating of metal sealing surfaces between the plug and seat. For example, the mating of a resilient sealing surface with a metal sealing surface or another resilient sealing surface may not be suitable for valve applications that experience high temperatures and / or flames, such as may be experienced in thermal valves. [0003] Current metal-to-metal seals implement knife-edge and disc geometry with respect to the plug and seat. This geometry generally exhibits the smallest sealing surface area, which requires extensive polishing to provide an adequate metal-to-metal seal between the plug and seat. This geometry is also prone to leaks due to scarring of minimal sealing surface area. Contents of the invention [0004] An exemplary apparatus ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K1/00F16K1/36F16K1/42F16K1/46
CPCF16K1/00F16K1/36F16K1/42F16K1/46F16K1/34F16K1/465
Inventor J·鲍耶T·埃里森J·迈尔斯
Owner 艾默生过程管理调节技术塔尔萨有限公司