Seal retainer with pressure energized metal seal members for undersea hydraulic coupling
An improved seal retainer for an undersea hydraulic coupling member, which utilizes pressure energized metal seals to maintain fluid integrity. One or more metal seals designed to have a press or interference fit are utilized in such a way that pressurized fluid trying to escape past the seal actually helps to pressure energize the seal to ensure a better seal.
1. A seal retainer for an undersea female hydraulic coupling member, comprising:
a. a first metal seal integral with the seal retainer for creating a pressure-energized seal between the seal retainer and a probe of a male coupling member inserted in a female hydraulic coupling member containing the seal retainer; and,
b. a second metal seal integral with the seal retainer for creating a pressure-energized seal between the seal retainer and a female hydraulic coupling member containing the seal retainer.
2. The seal retainer of claim 1 wherein the first integral metal seal is a metal lip seal.
3. The seal retainer of claim 2 wherein the first integral metal lip seal is dimensioned such that it is slightly displaced when the probe of a male coupling member is inserted.
4. The seal retainer of claim 3 wherein the displacement of the first integral metal lip seal is about 0.00 1 inches.
5. A seal retainer as recited in claim 2 wherein the seal retainer comprises a substantially outer shell and a substantially inner seal carrier comprising a metal body and the first integral metal lip seal and the second integral metal seal are machined into the body of the seal carrier.
6. The seal retainer of claim 2 wherein the first integral metal lip seal is configured to be pressure energized by fluid surrounding the probe of the male member.
7. The seal retainer of claim 1 wherein the second integral metal seal is a metal concave seal.
8. The seal retainer of claim 7 wherein the metal concave seal is adapted to be pressure energized by fluid pressure on either the interior or exterior of the seal retainer.
9. An undersea female hydraulic coupling member comprising a seal retainer comprising a first integral metal pressure energized seal for forming a seal between the seal retainer and a probe of a male coupling member inserted in the female coupling member, and a second integral pressure energized metal seal for forming a seal between the seal retainer and a shoulder of the female coupling member containing the seal retainer.
10. The undersea hydraulic coupling member of claim 9 wherein the first integral metal pressure energized seal is a metal lip seal.
11. The undersea hydraulic coupling member of claim 10 wherein the second integral pressure energized metal seal is a metal concave seal.
12. The undersea hydraulic coupling member of claim 10 wherein the integral metal lip seal is slightly displaced when the probe of the male coupling member is inserted into the female coupling member.
13. The undersea hydraulic coupling member of claim 11 wherein the integral metal concave seal is slightly displaced when the seal retainer is installed in the female coupling member.
14. The undersea hydraulic coupling member of claim 13 wherein the displacement of the integral metal lip seal is about 0.001 inches.