[특허]Method and a coupler for joining two steel pipes

Levario,Alfredo

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특허 상세정보

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Method and a coupler for joining two steel pipes

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B23P-011/00 F16L-055/00
미국특허분류(USC)	029/505; 029/450; 029/451; 285/055; 285/351; 285/363; 285/382.4; 277/608; 277/626
출원번호	US-0027308 (2001-12-21)
발명자 / 주소	Levario,Alfredo
출원인 / 주소	Levario,Alfredo
인용정보	피인용 횟수 : 26 인용 특허 : 30

초록

A method and apparatus for coupling together the ends of two steel pipe sections, each of which contains a permeable inner liner, in which not only are the pipe ends held in abutting engagement, but gas contained within the liner of one pipe section is effectively channeled into the liner of the other pipe section.

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I claim: 1. In a pipeline having a plurality of longitudinal pipe sections, a joint mechanism coupling two such sections, comprising: pipe sections having outwardly flanged end portions; means holding outer end surfaces of the pipe sections in abutting and sealing relationship, the flanged end portions then also providing an annular space to receive a coupling ring; a coupling ring disposed within the annular space and having an inner diameter conforming to an inner diameter of the pipe sections, the coupling ring also having longitudinally tapered outer end surface portions; each pipe section also containing a cylindrical lining member covering an inner wall surface of the pipe section; end portions of respective liners extending into the annular space in contact with respective tapered outer surfaces of the coupling ring, the liner ends not being in physical contact with each other; and the annular space permitting fluid or gas that may be moving within the liner of one pipe section to flow around an outer circumference of the coupling ring and into the liner of the other pipe section when the pipe sections are coupled in abutting and sealing relationship. 2. A joint mechanism as in claim 1 wherein each lining member has longitudinal grooves on its outer wall surface to permit fluid or gas that may seep through the liner to move within the grooves longitudinally of an associated pipe section. 3. A joint mechanism as in claim 2 wherein the holding means also clamps the coupling ring in tight engagement with outer end portions of the liners. 4. A joint mechanism as in claim 2 which further includes a pair of flow rings encasing the end portions of respective liners, the flow rings having mutually aligned openings to permit fluid or gas moving within the liner of one pipe section to flow around the outer circumference of the coupling ring and into the liner of the other pipe section. 5. A joint mechanism as in claim 1 wherein the holding means also clamps the coupling ring in tight engagement with outer end portions of the liners. 6. A joint mechanism as in claim 5 wherein each lining member has longitudinal grooves on its outer wall surface to permit fluid or gas that may seep through the liner to move within the grooves longitudinally of an associated pipe section. 7. A joint mechanism as in claim 1 which further includes a pair of flow rings encasing the end portions of respective liners, the flow rings having mutually aligned openings to permit fluid or gas moving within the liner of one pipe section to flow around the outer circumference of the coupling ring and into the liner of the other pipe section. 8. In a pipeline having a plurality of longitudinal pipe sections, a joint mechanism coupling two such sections, comprising: each pipe section containing a lining member that covers an inner wall surface of the pipe section, both the pipe sections and their associated liners having outwardly flanged end portions; the flanged end portions of the pipe sections and liners also providing an annular space to receive a coupling ring; a coupling ring disposed within the annular space, and having longitudinally tapered outer end surface portions that supportingly engage flared end portions of the liners, the liner ends not being in physical contact with each other; means holding outer end surfaces of the pipe sections in abutting and sealing relationship; and the annular space permitting fluid or gas that may be moving within the liner of one pipe section to flow around the outer circumference of the coupling ring and into an liner of the other pipe section when the pipe sections are coupled in abutting and sealing relationship. 9. A joint mechanism as in claim 8 wherein each lining member has longitudinal grooves on its outer wall surface to permit fluid or gas that may seep through the liner to move within the grooves longitudinally of an associated pipe section. 10. A joint mechanism as in claim 9 which further includes a pair of flow rings encasing end portions of respective liners, the flow rings having mutually aligned openings to permit fluid or gas moving within the liner of one pipe section to flow around the outer circumference of the coupling ring and into the liner of the other pipe section. 11. A joint mechanism as in claim 10 wherein the holding means also clamps the flow rings in tight engagement with the outer end surfaces of liners, and the coupling ring in tight engagement with their inner end surfaces. 12. A joint mechanism as in claim 8 which further includes a pair of flow rings encasing the end portions of respective liners, the flow rings having mutually aligned openings to permit fluid or gas moving within the liner of one pipe section to flow around the outer circumference of the coupling ring and into the liner of the other pipe section. 13. A method of joining and securely sealing together ends of two steel pipe sections that contain gas-permeable interior liners, comprising the steps of: forming the end portions of both the pipe sections and their associated liners into an outwardly flared configuration so as to provide an annular space for receiving a coupling ring between joined ends of two such pipe sections; selecting a coupling ring having an interior circumferential surface conforming to an interior space of the pipe sections, having longitudinally sloped outer end surfaces to receive the flared end portions of the liners, and having a radially protruding circumferential shoulder intermediate its two ends; placing the coupling ring within the annular space so that its radially protruding circumferential shoulder provides longitudinal separation between the ends of the liners while its sloped end surfaces engage and receive the flared end portions of the liners; and leaving coupling the pipe sections in abutting and sealing relationship, a radial space about the coupling ring to allow fluid or gas flowing longitudinally within the liner of one of the pipe sections to flow about the circumferential shoulder of the coupling ring and hence into the liner of the other pipe section. 14. A method of claim 13 wherein a pair of flow rings are utilized to encase the end portions of respective liners, which have mutually aligned openings to permit the flow of fluid or gas.

이 특허에 인용된 특허 (30)

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특허 상세정보

Method and a coupler for joining two steel pipes

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특허 상세정보

Method and a coupler for joining two steel pipes

초록

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이 특허에 인용된 특허 (30)

이 특허를 인용한 특허 (26)

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