WO2001063166A1 - Seal assembly, its use and installation - Google Patents
Seal assembly, its use and installation Download PDFInfo
- Publication number
- WO2001063166A1 WO2001063166A1 PCT/US2001/005412 US0105412W WO0163166A1 WO 2001063166 A1 WO2001063166 A1 WO 2001063166A1 US 0105412 W US0105412 W US 0105412W WO 0163166 A1 WO0163166 A1 WO 0163166A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- seal
- elastomenc
- movable
- sealing
- elastomeric
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/021—Sealings between relatively-stationary surfaces with elastic packing
- F16J15/028—Sealings between relatively-stationary surfaces with elastic packing the packing being mechanically expanded against the sealing surface
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
- F16J15/3268—Mounting of sealing rings
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gasket Seals (AREA)
- Preparation Of Compounds By Using Micro-Organisms (AREA)
- Pipe Accessories (AREA)
Abstract
A method and apparatus for installing seals in an interference fit with a comating sealing surface by initially stretching the seal (37) installed in a groove (15) to reduce its cross-sectional thickness perpendicular to a comating sealing surface (Fig. 4). The stretched seal (37) is mated with a comating surface and then relaxed, permitting the seal to return to an unstretched position (Fig. 3) and to passively assume a preloaded position against the comating sealing surface. The seal (37) may be repeatedly disengaged and reengaged by selectably restretching the seal (37) and then selectably releasing it upon completion of repositioning.
Claims
1. A sealing apparatus for sealing a flow gap comprising a housing, an elastomeric seal, a static seal end, bonded to a one end of the elastomenc seal on an inner side of the static seal end and anchored to the housing on an outward side of the static seal end; and a movable seal end, bonded to a second end of the elastomenc seal, wherein when said movable seal end is displaced in a direction going away from the static seal end the elastomeric seal is tensioned and when the movable end is moved back towards the static seal end the tension on the seal is eased, reciprocable means for tensioning and untensioning the seal, said tensioning means operated by selectably moving the movable end, and actuation means for displacing the movable seal end
2 The sealing apparatus of claim 1 , wherein the housing is tubular
3 The sealing apparatus of claim 1 , wherein the elastomenc seal has an annular configuration
4. The sealing apparatus of claim 1 , wherein the elastomenc seal has a substance with a high frictional coefficient embedded in a comating surface of the elastomenc seal
5 The sealing apparatus of claim 4, wherein the substance is a silica flour
6 The sealing apparatus of claim 1 , wherein the elastomeric seal has at least one antiextrusion device embedded in and bonded to an elastomenc matrix of the seal said antiextrusion device comprising a corrugated annular ring of rigid material
7 The sealing apparatus of claim 6, wherein at least one antiextrusion device is embedded on a low pressure side of the seal
8 The sealing apparatus of claim 1 , wherein the tensioning means is at least one hydraulic cylinder
9 The sealing apparatus of claim 1 , wherein the tensioning means is at least one cam
10 The sealing apparatus of claim 9, wherein the cam is actuated by rotation
17
11 The sealing apparatus of claim 1 , wherein a contact surface of the elastomenc seal is tapered in a direction going from the region of the elastomenc seal with the most interference with the comating surface toward the movable end of the elastomeric seal
12 A sealing apparatus for sealing a flow gap between two parts comprising a housing an elastomeric sealing element wherein a first end of the sealing element is anchored to one end of said housing, a reciprocably movable end, said movable end attached to a second end of the sealing element, reciprocable means for imparting movement to the movable end relative to said housing, said reciprocable means connected to said movable end wherein the movable end moves along a path defined by a first position and a second position and actuation means for reversibly imparting movement to said reciprocable means and the movable end, whereby when said movable end is in the first position said elastomenc sealing element is relaxed and when said movable end is in the second position said elastomenc gripping element is tensioned
13 The sealing apparatus of claim 12, wherein the actuation means is a hydraulic fluid and said reciprocable means is one or more hydraulic cylinders
14 The sealing apparatus of claim 12 wherein said reciprocable means is a cam and the actuation means is rotation
15 The sealing apparatus of claim 12 wherein the sealing element has at least one antiextrusion device embedded and bonded to an elastomenc matrix of said sealing element
16 The sealing apparatus of claim 12 wherein said reciprocating means is prevented from substantial displacement after moving said movable end to the first position to passively bias said seal against a comating sealing surface
17 A sealing apparatus comprising a tubular housing a sealing assembly comprising an elastomeric element an anchor end said anchor end bonded to a first end of the sealing element, and a reciprocably movable end said movable end bonded to a second end of the sealing element, a reciprocable piston connected to said movable end said piston movable along a path defined by a first position and a second position and a hydraulic cylinder having a first and second hydraulic chamber wherein when hydraulic pressure is applied to the first hydraulic chamber the piston moves to the second position thereby moving the movable end of the sealing assembly and stretching the elastomenc sealing element, and when hydraulic pressure is applied to the second hydraulic chamber the piston moves towards the first position thereby moving the movable end of the sealing assembly and easing the tension on the sealing element
18 The sealing apparatus of claim 17 wherein the elastomenc gripping element has a substance with a high frictional coefficient embedded in a sealing surface of the sealing element
19 The sealing apparatus of claim 17 wherein the sealing element has at least one antiextrusion device embedded and bonded to an elastomenc matrix of the sealing element
20 The sealing apparatus of claim 17 wherein when the piston is in the second position and the elastomeric sealing element is stretched an interior circumference of the elastomenc sealing element is greater than the exterior perimeter of a pipe inserted in said sealing apparatus, and wherein when the piston is in the first position and the elastomeric sealing element is relaxed the interior circumference of the elastomenc sealing element is less than the exterior perimeter of the pipe
21 A sealing apparatus for sealing against pressure and flow across a gap between a first body having a first seal surface and a second body having a second seal surface said first and second seal surfaces substantially parallel to each other said sealing apparatus comprising a groove in the first body said groove having an anchored first side and a movable second side, an elastomeric seal positioned in the groove and bonded to the first and second sides of the groove, and means for displacing said movable second side of the groove wherein when said movable second side is displaced in a direction going away from the anchored first side the elastomeric seal is tensioned and when the movable second side of the groove is moved back toward the static seal end the tension on the elastomenc seal is released
22 The sealing apparatus of claim 21 wherein the elastomeric seal is a female annular seal having a primary contact zone displaced from a midpoint along a length of the seal, said primary contact zone has a smaller inner diameter than the rest of the elastomenc seal
23 The sealing apparatus of claim 21 wherein the elastomenc seal has a pair of communicating central annular grooves one groove on a comating interface and another groove on an obverse face of the seal
19
24 The sealing apparatus of claim 23 wherein said pair of annular grooves communicate through a plurality of radially connecting ports
25 The sealing apparatus of claim 21 further comprising an external annular groove positioned between a top side of the groove and an upper side of the elastomenc seal, said external annular groove in communication with an internal annular groove wherein pressure applied to either side of said elastomenc seal can be trapped in said external annular groove, the entrapped pressure in said external annular groove presses down on the upper side of the seal to bias said seal against the second seal surface
26 A method of sealing a flow gap between two parts comprising
(a) providing a seal assembly comprising an elastomenc seal, a static seal end, bonded to the seal on a one end, and a movable seal end, bonded to the seal on a second end, wherein when said movable seal end is displaced in a direction going away from the static seal end the elastomenc seal is tensioned and when the movable end moves back towards the static seal end the tension on the seal is eased, means for reciprocable tensioning and untensioning the seal, said tensioning means operated by moving the movable end, and means for actuating the displacement of the movable seal,
(b) mounting the seal assembly in an annular housing, wherein the static seal end is anchored to the housing, an internal surface of the housing being a first seal surface of an annular flow gap,
(c) activating the tensioning means to tension the elastomenc seal and reduce a cross-sectional thickness perpendicular to a comating surface of the elastomeric seal,
(d) inserting an object into a bore of the seal assembly while the seal is tensioned, wherein an external surface of the object is a second seal surface of the flow gap, and
(e) releasing the tension on the seal to bias the seal against the second seal surface to seal the flow gap
27 The method of claim 26, wherein the object has a cylindrical configuration
28 The method of claim 26 wherein the object is tubular
29 The method of claim 26 wherein said tensioning means is at least one hydraulic cylinder
30 The method of claim 29 wherein said actuating means is hydraulic fluid
20
31 The method of claim 26 wherein said tensioning means is at least one cam
32 The method of claim 31 , wherein said actuating means is rotation
33 The method of claim 26 wherein when the movable end is in the first position and the elastomenc sealing element is tensioned an interior circumference of the elastomenc sealing element is greater than the exterior perimeter of the object and wherein the movable end is in the second position and the elastomenc sealing element is relaxed the interior circumference of the elastomeric sealing element is less than the exterior perimeter of the object
34 A gripping mechanism for a tubular pipeline end clamp said gripping mechanism comprising a plurality of outer rings a plurality of split inner rings wherein the inner rings have a smaller diameter than the outer rings and wherein the inner rings are axially alternating and comating with the larger outer rings and means for compressing the outer and inner rings wherein when said outer and inner rings are compressed the inner rings move inward to grip an exterior surface of a pipe positioned in a bore of the inner rings
35 The gripping mechanism of claim 34 wherein the outer rings are split rings
36 The gripping mechanism of claim 34 wherein the compression means compresses the outer rings and the inner rings in a direction parallel to an axis of the clamp
37 The gripping mechanism of claim 34 wherein the compression means is a plurality of threaded fasteners
38 The gripping mechanism of claim 37 wherein the threaded fasteners are bolts nuts, or screws
39 A tubular pipeline end clamp comprising
(a) a housing
(b) a gripping mechanism mounted within a bore of the housing proximal to a first end of said housing said gripping mechanism comprising a plurality of outer πngs a plurality of split inner rings wherein the inner rings have a smaller ring diameter than the outer rings and wherein the inner πngs are axially alternating and comating with the larger outer rings and
21 means for compressing the outer and inner rings, wherein when said outer and inner rings are compressed the inner rings move inward toward a center of the bore of the housing for gripping a pipe within the bore of said housing; and (c) an annular seal assembly mounted within the bore of the housing adjacent to the gripping mechanism and proximal to a second end of the housing, said seal assembly comprising: an elastomeric seal; a static seal end, bonded to a one end of the elastomeric seal on an inner side of the static seal end and anchored to the housing on an outward side of the static seal end; and a movable seal end, bonded to a second end of the elastomeric seal, wherein when said movable seal end is displaced in a direction going away from the static seal end the elastomeric seal is tensioned and when the movable end is moved back toward the static seal end the tension on the seal is eased; reciprocable means for tensioning and untensioning the seal, said tensioning means operated by moving the movable end; and actuation means for displacing the movable seal end; whereby when said moveable end of the seal assembly is moved back toward the static seal end the seal is relaxed and passively biases against an exterior surface of the pipe gripped within the housing bore by the gripping mechanism.
40. The clamp of claim 39, wherein the outer rings of the gripping mechanism are split rings.
41. The clamp of claim 39, wherein the elastomeric seal has an annular configuration.
42. The clamp of claim 39, wherein the elastomeric seal has a substance having a high frictional coefficient embedded in a comating surface of the elastomeric seal.
43. The clamp of claim of 39, wherein the elastomeric seal has at least one antiextrusion device embedded in and bonded to an elastomeric matrix of the seal, said antiextrusion device comprising a corrugated annular ring of rigid material.
44. The clamp of claim of 39, wherein at least one antiextrusion device is embedded on a low pressure side of the seal.
45. The clamp of claim 39, wherein the tensioning means is at least one hydraulic cylinder.
46. The claim of claim 45, wherein the actuation means is hydraulic pressure.
47. The clamp of claim 39, wherein the tensioning means is at least one cam.
22 48 The clamp of claim 39 wherein the cam is actuated by rotation
49 The clamp of claim 39 wherein a contact surface of the elastomeric seal is monotonically tapered in a direction going from the smallest inner diameter portion of the elastomenc seal toward the movable end of the elastomenc seal
50 The clamp of claim 39, wherein when the elastomenc seal is tensioned an interior circumference of the elastomenc sealing element is greater than the exterior circumference of the pipe insert therein, and when the elastomeric seal is untensioned the interior circumference of the elastomeric sealing element is less than the exterior circumference of the pipe
51 The clamp of claim 39, wherein the elastomenc seal has a primary contact zone, said primary contact zone has a smaller diameter than the rest of the seal
52 The clamp of claim 51 wherein the primary contact zone is displaced from a midpoint along the length of the seal
53 The clamp of claim 39 wherein the elastomeric seal has a pair of communicating central annular grooves one groove on a comating interface and the other groove on an obverse face of the seal
54 The clamp of claim 53 wherein said pair of annular grooves communicate through a plurality of radially connecting ports
55 The clamp of claim 39 wherein said annular seal assembly further comprising an external annular groove positioned between the bore of the housing and an upper side of the elastomeric seal, said external annular groove in communication with an internal annular groove wherein pressure applied to either side of said elastomenc seal can be trapped in said external annular groove, the entrapped pressure in said external annular groove presses down on the upper side of the seal to bias said seal against the second seal surface
56 The clamp of claim 39 wherein pressure is communicated to an outer side of the seal whenever relatively high pressure from the movable side of the seal is retained by the elastomenc seal, the retained pressure provides a pressure bias urging said seal into more intimate sealing contact with a comating sealing surface
57 A method of installing a pipe in the tubular pipeline end clamp of claim 39 comprising
(a) loosening the compression means to loosen the inner and outer rings of the gripping mechanism,
(b) tensioning the elastomenc seal of the seal assembly
23 (c) inserting a pipe into the clamp through the bore in the gripping mechanism and the seal assembly,
(d) positioning the pipe to the desired location,
(e) engaging the compression means to displace the inner rings inward to grip an exterior surface of the pipe and
(f) releasing the tensioning means to bias the elastomenc seal against the exterior surface of the pipe to seal a fluid gap between the housing and exterior surface of the pipe
24
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2001238544A AU2001238544A1 (en) | 2000-02-21 | 2001-02-20 | Seal assembly, its use and installation |
| CA002404629A CA2404629C (en) | 2000-02-21 | 2001-02-20 | Seal assembly, its use and installation |
| GB0125571A GB2363632B (en) | 2000-02-21 | 2001-02-20 | Seal assembly its use and installation |
| MXPA01010662A MXPA01010662A (en) | 2000-02-21 | 2001-02-20 | Transgenic mice comprising a genomic human tau transgene. |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US18416900P | 2000-02-21 | 2000-02-21 | |
| US60/184,169 | 2000-02-21 | ||
| US09/788,971 | 2001-02-19 | ||
| US09/788,971 US6648339B2 (en) | 2000-02-21 | 2001-02-19 | Seal assembly, its use and installation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2001063166A1 true WO2001063166A1 (en) | 2001-08-30 |
Family
ID=26879875
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/US2001/005412 WO2001063166A1 (en) | 2000-02-21 | 2001-02-20 | Seal assembly, its use and installation |
Country Status (5)
| Country | Link |
|---|---|
| AU (1) | AU2001238544A1 (en) |
| CA (1) | CA2404629C (en) |
| GB (1) | GB2363632B (en) |
| MX (1) | MXPA01010662A (en) |
| WO (1) | WO2001063166A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8177238B2 (en) | 2008-03-04 | 2012-05-15 | Daniel Measurement And Control, Inc. | System and method of a flange seal ring |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102017109676A1 (en) * | 2017-05-05 | 2018-11-08 | Atm Gmbh | Embedding press and closing device for an embedding press |
| DE102017109677A1 (en) | 2017-05-05 | 2018-11-08 | Atm Gmbh | Embedding press, suction device for an embedding press and modular embedding press system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3150886A (en) * | 1961-05-23 | 1964-09-29 | Theodore W Briegel | Electrical conduit connector |
| US4305591A (en) * | 1979-04-11 | 1981-12-15 | Compagnie Francaise Des Petroles, Societe Anonyme | Inflatable seals |
| US4728125A (en) * | 1986-01-10 | 1988-03-01 | Bobby J. Reneau | Grip and seal mechanically locking flowline connector |
-
2001
- 2001-02-20 AU AU2001238544A patent/AU2001238544A1/en not_active Abandoned
- 2001-02-20 MX MXPA01010662A patent/MXPA01010662A/en active IP Right Grant
- 2001-02-20 GB GB0125571A patent/GB2363632B/en not_active Expired - Fee Related
- 2001-02-20 CA CA002404629A patent/CA2404629C/en not_active Expired - Fee Related
- 2001-02-20 WO PCT/US2001/005412 patent/WO2001063166A1/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3150886A (en) * | 1961-05-23 | 1964-09-29 | Theodore W Briegel | Electrical conduit connector |
| US4305591A (en) * | 1979-04-11 | 1981-12-15 | Compagnie Francaise Des Petroles, Societe Anonyme | Inflatable seals |
| US4728125A (en) * | 1986-01-10 | 1988-03-01 | Bobby J. Reneau | Grip and seal mechanically locking flowline connector |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8177238B2 (en) | 2008-03-04 | 2012-05-15 | Daniel Measurement And Control, Inc. | System and method of a flange seal ring |
| US9625068B2 (en) | 2008-03-04 | 2017-04-18 | Daniel Measurement And Control, Inc. | System and method of a flange seal ring |
Also Published As
| Publication number | Publication date |
|---|---|
| AU2001238544A1 (en) | 2001-09-03 |
| GB0125571D0 (en) | 2001-12-19 |
| CA2404629C (en) | 2009-06-02 |
| GB2363632A (en) | 2002-01-02 |
| GB2363632B (en) | 2003-12-10 |
| CA2404629A1 (en) | 2001-08-30 |
| MXPA01010662A (en) | 2004-03-19 |
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