Threaded pipe connection with a pressure energized flex-seal
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F16L-025/00
E21B-017/042
F16L-015/00
F16L-015/06
출원번호
US-0629804
(2012-09-28)
등록번호
US-8985640
(2015-03-24)
발명자
/ 주소
Leng, Kuo-Tsung
출원인 / 주소
TorqueLock Corporation
대리인 / 주소
Gunter, Jr., Charles D.
인용정보
피인용 횟수 :
0인용 특허 :
14
초록▼
A threaded pipe connection is shown which features a pressure energized flex-seal structure. The connection includes a first box member having a box end, the box end having an end opening defining an interior surface with internal threads, the internal threads being defined by crests and roots and o
A threaded pipe connection is shown which features a pressure energized flex-seal structure. The connection includes a first box member having a box end, the box end having an end opening defining an interior surface with internal threads, the internal threads being defined by crests and roots and opposing flanks. A second, mating pin member has a pin end with a pin nose, the pin end having an exterior surface with mating external threads, the external threads also having crests and roots and opposing flanks, at least selected ones of which move into engagement with the internal threads of the box when the connection is made up. A flex-seal region is located on either the box and interior surface or the pin end which forms a primary containment seal upon make up of the connection.
대표청구항▼
1. A threaded connection having a central longitudinal axis and having a pressure energized flex seal region capable of sealing both liquids and gases, the connection comprising: a first box member having a box end, the box end having an end opening defining an interior surface with internal threads
1. A threaded connection having a central longitudinal axis and having a pressure energized flex seal region capable of sealing both liquids and gases, the connection comprising: a first box member having a box end, the box end having an end opening defining an interior surface with internal threads and a radially inner circumferential surface, the internal threads being defined by crests and roots and opposing flanks;a second, mating pin member having a pin end with a pin nose, the pin nose terminating at an outside wall region at an outer extent thereof, the pin end having an interior surface and an exterior surface, the exterior surface having mating external threads, the external threads also having crests and roots and opposing flanks, at least selected ones of which move into engagement with the internal threads of the box when the connection is made up, the outside wall region of the pin nose being located between the interior surface and the exterior surface of the pin nose;wherein the box member interior surface has a radially inwardly extending shoulder which is located between the internal threads and the radially inner circumferential surface and extends in a direction generally perpendicular to the central longitudinal axis of the connection, the inwardly extending shoulder having an outer surface which faces the box end opening and an oppositely arranged inner surface, the outer surface being contacted by the outside wall region of the pin nose during make up of the connection and forming a primary containment seal upon make up of the connection;wherein the outer surface of the box shoulder has a pair of resistive areas which are spaced apart by a recessed area, so that the outside wall region of the pin nose initially makes contact only with the resistive areas on the box shoulder during make up of the connection;wherein the box shoulder has a radially outward resistive area and a radially inward resistive area, with respect to the central longitudinal axis of the connection, and wherein the radially outward resistive area has a greater relative surface area than the radially inward resistive area; andwherein a concave recess comprising a machined recess is formed on the box member interior surface between the box shoulder and the radially inner circumferential surface adjacent the inner surface of the box shoulder, the concave recess providing a flexible property to the box shoulder which acts like a spring upon contact with the pin nose and forming the flex-seal region upon makeup of the connection which is pressure energized during use by any fluid present in the interior of the connection. 2. The threaded connection of claim 1, wherein contact pressure between the outside wall region of the pin nose and the box shoulder is maintained within a controlled range due to the spring effect of the flex-seal region of the connection. 3. The threaded connection of claim 2, wherein the flex-seal region of the connection also includes a separate integrated, conical metal-to-metal seal located at an inner extent of the box end internal threads and at the pin nose. 4. The threaded connection of claim 3, wherein the flex-seal region is located distant from the end opening of the box member so that the seal is shielded from potential damage due to the pin nose during stabbing and make-up of the connection. 5. A threaded connection having a central longitudinal axis and having a pressure energized flex seal region capable of sealing both liquids and gases, the connection comprising: a first box member having a box end, the box end having an end opening defining an interior surface with internal threads and a radially inner circumferential surface, the internal threads being defined by crests and roots and opposing flanks;a second, mating pin member having a pin end with a pin nose, the pin nose terminating at an outside wall region at an outer extent thereof, the pin end having an interior surface and an exterior surface, the exterior surface having mating external threads, the external threads also having crests and roots and opposing flanks, at least selected ones of which move into engagement with the internal threads of the box when the connection is made up, the outside wall region of the pin nose being located between the interior surface and the exterior surface of the pin nose;wherein the box member interior surface has a radially inwardly extending shoulder which is located between the internal threads and the radially inner circumferential surface and extends in a direction generally perpendicular to the central longitudinal axis of the connection, the inwardly extending shoulder having an outer surface which faces the box end opening and an oppositely arranged inner surface, the outer surface being contacted by the outside wall region of the pin nose during make up of the connection and forming a primary containment seal upon make up of the connection;wherein the outer surface of the box shoulder has a pair of resistive areas which are spaced apart by a recessed area, so that the outside wall region of the pin nose initially makes contact only with the resistive areas on the box shoulder during make up of the connection;wherein the box shoulder has a radially outward resistive area and a radially inward resistive area, with respect to the central longitudinal axis of the connection, and wherein the radially outward resistive area has a greater relative surface area than the radially inward resistive area; andwherein a concave recess comprising a machined recess is formed on the box member interior surface between the box shoulder and the radially inner circumferential surface beginning as part of the box shoulder inner surface and continuing in a direction opposite the box end opening, contact between the mating pin member pin end and the box shoulder causing the box shoulder to flex in the direction of the concave recess and form the flex-seal region upon makeup of the connection which is pressure energized during use by any fluid present in the interior of the connection.
연구과제 타임라인
LOADING...
LOADING...
LOADING...
LOADING...
LOADING...
이 특허에 인용된 특허 (14)
Holt,Augustus Brooks; Roberts,Paul E.; Schofield,Alan P., Cammed seal assembly with sealing ring having an angled leg portion and foot portion with elastomeric energizer element.
Lair Paul D. (1232 Summer Cir. Okoboji IA 51355) Parker Paul D. (2009 NW. 10th St. Ankeny IA 50021), Contaminant resistant piston seal with energized backup scrapers.
Gaskill Gretchen T. (Albuquerque NM) Vitello Robert J. (Duluth GA), PLL-based method and apparatus for generating video drive signals from various sync formats.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.