Valve seal retaining means

• US 4,034,959 A
• Filed: 12/24/1975
• Issued: 07/12/1977
• Est. Priority Date: 12/24/1975
• Status: Expired due to Term

• Current Assignee: Cooper Industries, Inc. (Eaton Corporation PLC.)
• Original Assignee: ACF Industries Holding Corporation (Icahn Associates Holding LLC)
• Inventors: Morrison, Bertram L.
• Primary Examiner(s): Nilson, Robert G.
• Application Number:
  US05/644,233
• Time in Patent Office: 566 Days
• Field of Search: 251/306, 251/314, 251/315, 251/328, 251/359, 251/364, 277/227
• US Class Current: 251/315.02
• CPC Class Codes: B23P 15/001 valves or valve housings welding B23K; valve housings per se F16K
• CPC Class Codes: F16K 3/0227 Packings
• CPC Class Codes: F16K 5/0673 Composite packings
• CPC Class Codes: Y10T 29/49409 Valve seat forming

Abstract

A valve comprised of a valve body having a body with flow passages therethrough and a valve member mounted therein movable between open and closed positions. An annular groove in the body around a flow passageway has an open end, a closed end, and a pair of divergent side walls with the groove width at the closed end portion being greater than the width of the open end. An annular seal is positioned in the groove. A chemical fastener in the groove secures the seal ring in the groove. A method of making the valve seal structure includes forming the groove with divergent side walls in a seal ring supporting position of a valve body and then partially filling the groove with a chemical fastener material. The seal ring is inserted into the groove within the chemical fastener material and the chemical material is cured to secure the seal ring in the groove.

Claims

1. A valve, comprising:

a. a valve body having a valve chamber therein, flow passages in said valve body in communication with the valve chamber, a valve member positioned within the valve chamber and movable between open and closed positions relative to said flow passages,

b. an annular groove in said valve body around at least one of said flow passages having an open end and a closed end formed by a bottom wall, said groove defined by a pair of divergent side walls extending between said open end and said bottom wall and said groove having a width of said closed end substantially greater thn the width of at said open end,

c. an annular seal ring positioned in said groove adjacent to said bottom wall and extending beyond said open end and contacting said valve member, the width of the portion of said annular seal ring that is located adjacent to and extending through said annular groove open end is substantially less than the width of said annular groove open end, and

d. a chemical fastener between at least a portion of one of said walls and said seal ring to secure in said groove, said chemical fastener being of a consistency capable of flowing and displacement when said seal ring is positioned within the groove and subsequently curing into a firm consistency having a hardness at least as hard as said seal ring to secure said seal ring in said groove between said side walls against movement out of the groove, said chemical fastener being flowable from said annular groove between said annular groove open end and said seal ring upon insertion of said seal ring into said groove.

2. The valve of claim 1, wherein said chemical fastener being an anerobic material.

3. The valve of claim 2, wherein said chemical fastener material being a substantially rigid material in cured form.

4. The valve of claim 2, wherein said chemical fastener material being a substantially elastic material in cured form.

5. The valve of claim 1, wherein said annular seal ring has a plurality of passageways therethrough radially disposed relative to the center thereof with said passageways communicably connecting a zone in the interior portion of said seal ring and another zone on the periphery of said seal ring.

6. The valve of claim 5, wherein said seal ring has an outer portion and an inner portion, said outer portion being mounted in said groove, said seal ring outer portion defined by an inner annular portion and an outer annular portion separated by a space, said space extending from an outer end portion of said seal ring into a mid-portion of said seal ring, said seal ring in a free position having said inner annular portion and said outer annular portion divergent from one another and spread to a width substantially greater than the width of said groove, and said inner annular portion and said outer annular portion being positioned in a divergent relation into opposed portions of said groove.

7. The valve of claim 6, wherein:

a. said seal ring inner portion has a cross-sectionally convex portion on said seal ring inner end forming a seal contact surface, said seal contact surface being in contact with said valve member;

b. said inner annular portion and said outer annular portion are divergent from said mid-portion thereof toward said outer end portion thereof with facing portions thereof being smoothly curved outwardly from said mid-portion toward opposite respective sides of said annular portions, and

c. said space having an enlarged portion at the juncture of said inner annular portion and said outer annular portion, said enlarged portion having a cross-sectional area larger than the portion of said space immediately outward thereof.

8. The valve of claim 7, wherein:

a. said valve member is a plug member having spherically shaped sealing surface portions on exterior surface portions thereof, said plug member being rotatively mounted in said valve chamber and having a bore therethrough alignable with said passageway in one position and blocking said passageway to fluid flow in another position,

b. said seal ring being in contact with said spherical surface portions of said plug member at least when said spherical plug is in either of said positions, and

c. said valve member having a rotatably mounted stem engaged therewith and extending therefrom through said body for rotation of said spherical plug.

9. The valve of claim 7, wherein:

a. said valve member is a gate member mounted in said valve chamber and having a stem mounted thereon and extending from said body, said stem being axially movable to displace said gate between said positions, and

b. said seal ring being in contact with a side of said gate in at least said position closing said passageway.

10. The valve of claim 7, wherein said seal ring is mounted in a seat ring with said seat ring being mounted in said valve body around said passageway.

11. The valve of claim 1, wherein, said seal ring has an annular recess therein around the inner annular side thereof and another annular recess therein around the outer peripheral side thereof, said annular recesses forming chambers in said annular groove between said annular seal ring and said groove divergent sidewalls for containing a portion of said chemical fastener material.

12. A valve comprising:

a. a valve body having a valve chamber therein, the flow passages in said valve body in communication with the valve chamber, a valve member positioned within the valve chamber and movable between open and closed positions relative to said flow passages,

b. an annular groove in said valve body around at least one of said flow passages having an open end and a closed end formed by a bottom wall, said groove defined by a pair of divergent side walls exending between said open end and said bottom wall and said groove having a width at said closed end substantially greater than the width at said open end,

c. an annular seal ring positioned in said groove adjacent to said bottom wall and extending beyond said open end and contacting said valve member, the width of the portion of said annular seal ring that is located adjacent to and extending through said annular groove open end is substantially less than the width of said annular groove open end,

d. a chemical fastener between at least a portion of one of said walls and said seal ring to secure said seal ring in said groove, said chemical fastener being of a consistency capable of flowing and displacement when said seal ring is positioned within the groove and subsequently curing to a hardness at least as hard as said seal ring to secure said seal ring in said groove between said walls against movement out of the groove, said chemical fastener being flowable from said annular groove between said annular groove open end and said seal ring upon insertion of said seal ring into said groove,

e. means on said seal ring mechanically engagable with said chemical fastener in said groove to firmly secure said seal ring in said groove, and

f. said seal ring has a plurality of passageways therethrough radially disposed in a spaced relation therearound to receive a portion of said chemical fastener.

13. The valve of claim 12, wherein:

a. said seal ring being a substantially non-porous and substantially deformable plastic material suitable for a valve seal, and

b. said chemical fastener being a substantially rigid epoxy type structural adhesive effectively bonded to portions of said seal ring and to portions of said groove to substantially rigidly secure said seal ring to said valve body in said groove.

14. The valve of claim 12, wherein:

a. said seal ring being a substantially non-porous and substantially deformable plastic material suitable for a valve seal, and

b. said chemical fastener being a substantially rigid epoxy type structural material which is not effectively substantially bonded to portions of said seal ring and to portions of said groove to secure said seal ring in said groove by a wedging-like action of said rigid chemical fastener between said divergent side walls.

15. The valve of claim 12, wherein:

a. said seal ring being a substantially non-porous elastomeric material suitable for a valve seal, and

b. said chemical fastener being an epoxy type structural adhesive bonded to portions of said seal ring and to said valve body in said groove to secure said seal ring in said groove.

16. The valve of claim 12, wherein:

a. said seal ring being a substantially non-porous elastomeric material suitable for a valve seal, and

b. said chemical fastener being a substantially rigid epoxy type structural material which is not effectively bonded to portions of said seal ring and to said valve body in said groove, said chemical fastener securing said seal ring in said groove by wedging-like between said divergent side walls.