RO116105B1 - Screw connection for tubes - Google Patents

Screw connection for tubes

Info

Publication number
RO116105B1
RO116105B1 RO97-01038A RO9701038A RO116105B1 RO 116105 B1 RO116105 B1 RO 116105B1 RO 9701038 A RO9701038 A RO 9701038A RO 116105 B1 RO116105 B1 RO 116105B1
Authority
RO
Romania
Prior art keywords
screwed
sleeve
tenon
truncated cone
screw connection
Prior art date
Application number
RO97-01038A
Other languages
Romanian (ro)
Inventor
Toader Dumitrache
Mihai Gafiţeanu
Ştefan Grigoraş
Gheorghe Bariz
Cristel Ştirbu
Gheorghe Hagiu
V. Dan Sergiu Mircea
Original Assignee
Ispat Petrotub S.A.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ispat Petrotub S.A. filed Critical Ispat Petrotub S.A.
Priority to RO97-01038A priority Critical patent/RO116105B1/en
Publication of RO116105B1 publication Critical patent/RO116105B1/en

Links

Landscapes

  • Non-Disconnectible Joints And Screw-Threaded Joints (AREA)
  • Joints That Cut Off Fluids, And Hose Joints (AREA)
  • Joints With Pressure Members (AREA)

Abstract

The invention relates to a screw connection for tubes meant for various applications, such as in oil and natural gas production industry. According to the invention, the screw connection consists, in a first embodiment, of a screwed tenon (1) and a screwed sleeve (2), both provided with trapezoidal straight threads arranged on two concentric diameters and separated by a front stop. The interior extremity of the screwed sleeve (2) is provided with a circumferential groove (a) meant for the O-ring joint (3) and whose depth exceeds the level of the edge (b) of the tenon (1). A truncated cone-shaped surface (f) of the sleeve (2) performs the sealing through the contact thereof with an edge resulting from the intersection of some truncated cone-shaped surfaces (g and h) of the screwed tenon (1). A truncated cone-shaped surface (j) being in contact with another truncated cone-shaped surface (k) of the screwed tenon (1) is provided at the exterior extremity of the sleeve (2). In another embodiment, the claimed screw connection comprises a screwed tenon (4) and a screwed sleeve (5), the sealing thereof being achieved using an O-ring joint (6) at one end and a connection fixed on some truncated cone-shaped surfaces (q and r) at the other end. At the exterior extremity, the screwed sleeve (5) is provided with a circumferential groove (n) wherein an O-ring joint (7) is placed.
RO97-01038A 1997-06-09 1997-06-09 Screw connection for tubes RO116105B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RO97-01038A RO116105B1 (en) 1997-06-09 1997-06-09 Screw connection for tubes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RO97-01038A RO116105B1 (en) 1997-06-09 1997-06-09 Screw connection for tubes

Publications (1)

Publication Number Publication Date
RO116105B1 true RO116105B1 (en) 2001-06-29

Family

ID=64360570

Family Applications (1)

Application Number Title Priority Date Filing Date
RO97-01038A RO116105B1 (en) 1997-06-09 1997-06-09 Screw connection for tubes

Country Status (1)

Country Link
RO (1) RO116105B1 (en)

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