Dynamic flange seal and sealing system

• US 7,530,574 B2
• Filed: 10/10/2007
• Issued: 05/12/2009
• Est. Priority Date: 04/11/2003
• Status: Expired due to Fees

• Current Assignee: Curtiss-Wright Flow Control Corporation (Curtiss-Wright Corporation)
• Original Assignee: Curtiss-Wright Flow Control Corporation (Curtiss-Wright Corporation)
• Inventors: Lah, Ruben F.
• Primary Examiner(s): PATEL, VISHAL A
• Application Number:
  US11/870,337
• Publication Number:
  US 20080143059A1
• Time in Patent Office: 580 Days
• Field of Search: 277/314, 277/603, 277608-609, 277/616, 277/647, 277/643, 202/217, 202/221, 202/222, 202/239, 202/270, 202/242, 202/244, 202/245, 202/246, 202/247, 202/248, 202/251, 202/252, 202/253, 494/53, 137/15.23, 137/315.12
• US Class Current: 277/314
• CPC Class Codes: C10B 25/10 for ovens with vertical chambers
• CPC Class Codes: C10B 25/16 Sealing; Means for sealing
• CPC Class Codes: F16J 15/0887 the sealing effect being obtained by elastic deformation of the packing
• CPC Class Codes: F16L 23/20 made exclusively of metal

Abstract

The present invention features a flange to flange dynamic seal and sealing system, particularly suited for use within high temperature, high pressure environments, such as a delayed coking process. The dynamic flange seal and sealing system comprises two primary elements or seals, each of which are capable of independently forming a flange seal between two flanged components or combining to create a flange seal. The flange seal created by the dynamic flange seal and sealing system is capable of being maintained in light of, or rather the sealing system adapts to, any structural or environmental changes within the connected flanges. As such, the flange seal may be a dynamic flange seal or a static flange seal or both.

Claims

1. A method for sealing flanged components within a high temperature, high pressure environment, said method comprising the steps of:

obtaining a first component having a flange;

obtaining a second component having a flange, each of said flanges being complimentary to each other;

providing a dynamic flange sealing system within at least one of said flanges of said first and second components, said dynamic flange sealing system comprising;

a corrugated bellow seal supported in one of said flanges of said first and second components and extending to and received by said complimentary flange upon their connection, said corrugated bellow seal being structured to be compressed between and structured to provide a dynamic seal between said first and second components;

a bi-material gasket supported within one of said flanges of said first and second components, said bi-material gasket comprising a flexor, which comprises a corrugated metal generally c shaped ring and a flexible sealant partially connected to said flexor; and

securing said first component to said second component via their respective said flanges, said step of securing causes said flexor to contract, wherein said flexible sealant displaces and seals against respective sealing surfaces on said flanges of said first and second components relative to the amount said flexor contracts, said dynamic flange sealing system providing a flange seal between said first and second components.

2. The method of claim 1, wherein said first and second components are selected from a group consisting of a coke drum, a transitional spool, a de-header valve, a header, an inlet feed, a bonnet, and any other similar component utilized and existing within a high temperature and pressure environment.

3. A method for sealing flanged components within a high temperature, high pressure environment, said method comprising the steps of:

obtaining a first component having a flange;

obtaining a second component having a flange, each of said flanges being complimentary to each other;

providing a dynamic flange sealing system within at least one of said flanges of said first and second components, said dynamic flange sealing system comprising;

a corrugated bellow seal supported in one of said flanges of said first and second components and extending to and received by said complimentary flange upon their connection, said corrugated bellow seal being compressed between and providing a dynamic seal between said first and second components;

a bi-material gasket supported within one of said flanges of said first and second components, said bi-material gasket comprising a flexor, and a flexible sealant partially connected to said flexor; and

securing said first component to said second component via their respective said flanges, said step of securing causes said flexor to contract, wherein said flexible sealant displaces and seals against respective sealing surfaces on said flanges of said first and second components relative to the amount said flexor contracts, said dynamic flange sealing system providing a flange seal between said first and second components.

4. A method for sealing flanged components within a high temperature, high pressure environment, said method comprising the steps of:

obtaining a first component having a flange;

obtaining a second component having a flange, each of said flanges being complimentary to each other;

providing a dynamic flange sealing system within at least one of said flanges of said first and second components, said dynamic flange sealing system comprising;

a bellow seal supported in one of said flanges of said first and second components and extending to and received by said complimentary flange upon their connection, said bellow seal being compressed between and providing a dynamic seal between said first and second components;

a bi-material gasket supported within one of said flanges of said first and second components, said bi-material gasket comprising a flexor, which comprises a corrugated metal generally c shaped ring and a flexible sealant partially connected to said flexor; and

securing said first component to said second component via their respective said flanges, said step of securing causes said flexor to contract, wherein said flexible sealant displaces and seals against respective sealing surfaces on said flanges of said first and second components relative to the amount said flexor contracts, said dynamic flange sealing system providing a flange seal between said first and second components.