Self-sealing a flange

Patent metadata

Field	Value
Publication number	US-11519537-B2
Application number	US-202017099249-A
Country	US
Kind code	B2
Filing date	Nov 16, 2020
Priority date	Nov 16, 2020
Publication date	Dec 6, 2022
Grant date	Dec 6, 2022

Abstract

A sealing assembly for flanges is described. The sealing assembly includes a wedge, a first sealing element, a second sealing element, and a fastener. The wedge has a first surface, a second surface, and a third surface. The first surface defines a pressure void with a first flange and a second flange. The first sealing element engages the second surface of the wedge and the first flange. The second sealing element engages the third surface of the wedge and the second flange. The fastener couples the first sealing element, the first flange, the second flange, and the second sealing element together. The wedge slides toward the sealing elements responsive to a pressure increase in the pressure void. The sealing elements force the flanges toward each other responsive to the wedge sliding toward the first sealing element and the second sealing element.

First claim

The invention claimed is:

1. A sealing assembly comprising:
a wedge comprising a first surface, a second surface, and a third surface, wherein the first surface defines a pressure void with a first flange and a second flange;
a first sealing element configured to engage the second surface of the wedge and a first surface of the first flange;
a second sealing element configured to engage the third surface of the wedge and a first surface of the second flange; and
a fastener configured to mechanically couple the first sealing element, the first flange, the second flange, and the second sealing element together, wherein the wedge is configured to slide toward the first sealing element and the second sealing element responsive to a pressure increase in the pressure void, wherein the first sealing element and the second sealing element are configured to force the first flange and the second flange toward each other responsive to the wedge sliding toward the first sealing element and the second sealing element.

2. The sealing assembly of claim 1 , further comprising
a seal positioned between the first flange and the second flange, wherein the seal, the first flange, and the second flange are configured to seal a fluid flow between the first flange and the second flange.

3. The sealing assembly of claim 2 , wherein the first surface of the first flange is a first outside surface and the first surface of the second flange is a second outside surface.

4. The sealing assembly of claim 1 , wherein the fastener further comprises:
a bolt; and
a nut.

5. The sealing assembly of claim 2 , wherein the first flange and the second flange define a longitudinal axis, wherein the longitudinal axis is in a direction of the fluid flow from the first flange to the second flange.

6. The sealing assembly of claim 5 , wherein the wedge slides radially relative to the longitudinal axis, and wherein the first sealing element and the second sealing element responsively slide axially relative to the longitudinal axis.

7. The sealing assembly of claim 1 , wherein, at or below a pressure threshold, the first sealing element directly contacts the second sealing element, wherein responsive to the pressure increase above the pressure threshold, the wedge separates the first sealing element and the second sealing element.

8. The sealing assembly of claim 7 , wherein the first sealing element directly contacting the second sealing element indicates an absence of a leak, wherein the wedge separating the contact between the first sealing element and the second sealing element indicates a presence of the leak.

9. The sealing assembly of claim 1 , wherein the wedge is configured to indicate the pressure increase in the pressure void.

10. The sealing assembly of claim 9 , wherein the wedge indicates the pressure increase in the pressure void by visually appearing from between the first sealing element and the second sealing element.

11. A sealing system comprising:
a wedge comprising a first surface, a second surface, and a third surface;
a first sealing flange configured to engage a first portion of the first surface of the wedge and the second surface of the wedge;
a second sealing flange configured to engage a second portion of the first surface of the wedge, the third surface the second wedge; and
a seal positioned between first sealing flange and the second sealing flange, the seal, the first sealing flange, and the second sealing flange configured to seal a fluid flow between the first sealing flange and the second sealing flange, the first sealing flange, the second sealing flange, and the seal defining a pressure void with the first sealing flange and the second sealing flange; and
a fastener configured to mechanically couple the first sealing flange, the second flange, and the seal together, wherein the wedge is configured to slide toward the first sealing flange and the second flange responsive to a pressure increase in the pressure void, wherein the first sealing flange and the second flange are configured to be forced toward each other responsive to the wedge sliding away from the pressure void.

12. The sealing system of claim 11 , wherein the fastener further comprises:
a bolt; and
a nut.

13. The sealing system of claim 11 , wherein the first sealing flange and the second sealing flange define a longitudinal axis, wherein the longitudinal axis is in a direction of the fluid flow from the first sealing flange to the second sealing flange.

14. The sealing system of claim 13 , wherein the wedge slides radially relative to the longitudinal axis, and wherein the first sealing flange and the second sealing flange responsively slide axially relative to the longitudinal axis.

15. The sealing system of claim 11 , wherein, at or below a pressure threshold, the first sealing flange directly contacts the second sealing flange, wherein responsive to the pressure increase above the pressure threshold, the wedge separates the first sealing flange and the second sealing flange.

16. The sealing system of claim 15 , wherein the first sealing flange directly contacting the second sealing flange indicates an absence of a leak, wherein the wedge separating the contact between the first sealing flange and the second sealing flange indicates a presence of the leak.

17. The sealing system of claim 16 , wherein the wedge is configured to indicate the pressure increase in the pressure void.

18. The sealing system of claim 17 , wherein the wedge indicates the pressure increase in the pressure void by visually appearing from between the first sealing flange and the second sealing flange.

19. A method of self-sealing a flange assembly comprising a first flange and a second flange, the method comprising:
sensing a pressure increase in a pressure void of a sealing assembly, the sealing assembly comprising:
a wedge comprising a first surface, a second surface, and a third surface, the wedge configured to mechanically couple to the first flange, the second flange, and a seal positioned between the first flange and the second flange to seal a fluid flow between the first flange and the second flange;
a first sealing element configured to engage the second surface of the wedge and a first surface of the first flange;
a second sealing element configured to engage the third surface of the wedge and a first surface of the second flange; and
a fastener configured to mechanically couple the first sealing element, the first flange, the seal, the second flange, and the second sealing element together, wherein the wedge is configured to slide toward the first sealing element and the second sealing element responsive to a pressure increase in the pressure void, wherein the first sealing element and the second sealing element are configured to force the first flange and the second flange toward each other responsive to the wedge sliding toward the first sealing element and the second sealing element;

responsive to sensing the pressure increase, moving the wedge in a direction away from a longitudinal axis of the first flange and the second flange;
responsive to moving the wedge, displacing the first sealing element and the second sealing element; and
responsive to displacing the first sealing element and the second sealing element, compressing the first flange and the second flange together, wherein the first flange and the second flange are positioned in between the first sealing element and the second sealing element;
responsive to compressing the first flange and the second flange, incre

Assignees

• Saudi Arabian Oil Co

Inventors

• Balint Endre

Classifications

• F16L23/162

  the pipe ends abutting each other · CPC title

• F16L23/22

  made exclusively of a material other than metal · CPC title

• F16L23/167

  in connection with the appearance or detection of leaks · CPC title

• F16L17/06

  with sealing rings arranged between the end surfaces of the pipes or flanges or arranged in recesses in the pipe ends or flanges · CPC title

• F16L23/0283 Primary

  the collar being integral with the pipe · CPC title