• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:

    公开号:SU1838706A3
    申请号:SU874202654
    申请日:1987-05-20
    公开日:1993-08-30
    发明作者:Vajnkhold Karl
    申请人:Weinhold Karl；
    IPC主号:
    专利说明:

    The invention relates to threaded connections, in particular for high pressure pipes or fittings built into the pipeline, having a coupling element fixed at one end and partially inserted into it the element of the opposite end of the pipe and a union nut for which there is a thrust surface in the form on the input element annular shoulder th, which, overlapping the input element, is screwed onto the sleeve element. In this case, the interacting thread of the union nut | <and the coupling element are made with a corresponding taper.
    The aim of the invention is to provide a threaded connection element operated at high pressure, which will withstand working loads even in harsh conditions, such as large dirt and aggressive environments, in adverse operating conditions, for example, in underground conditions, and can be easily dismantled in any time.
    In FIG. 1 shows a threaded connecting element for pipes, with a tightly tightened union nut: in FIG. 2 - the same, with a loose threaded connection; in FIG. 3 - clutch persistent screw threads in a tightened state; in FIG. 4 - the same with a loose screw thread; in FIG. 5 - coupling between the union nut and the coupling element with a trapezoidal screw thread in a tightened state; in FIG. 6 - the same, with a weakened screw thread; in FIG. 7- embodiment of a threaded connecting part for pipes; in FIG. 8 is an axial (front) view of FIG. 7.
    The device of FIG. 1.2 contains an insertion element 1, which is welded to the end of one pipe 2. wherein the coupled coupling element 3 is welded to the end of the opposite pipe 4. A union nut 5 is placed on top of the insertion element 1. An annular protrusion 6 on the insertion element 1838706 AZ 1 forms a supporting surface in the form of an annular shoulder 7 for a union nut 5, which is introduced into the clutch through the insertion element 1 and screwed onto the coupling element 3.
    Conical screw threaded surfaces 8 and 9, respectively, are made on the mating nut 6 and the coupling element 3. A union nut 5 with a screw threaded surface 8 expands conically to the outside, while a screw threaded surface 9 of the coupling element 3 gradually tapers conically in the direction of its free end. This means that the tapers of the mating surfaces 8, 9 of the union nut 5 and the coupling element 3 are mated with each other.
    For centering at the beginning of tightening of the union nut 5 on the coupling element 3, the surface 8 of the nut 5 and the surface 9 of the coupling element 3, which have a correspondingly short cylindrical cutting part 10, 11 of more than one turn, are screwed. The union nut 5 is first fully engaged with the coupling element 3 through these cutting parts. When the union nut 5 is rotated further, then the threads on the tapered surfaces 8, 9 are also engaged until the final union nut can no longer rotate, and this results in the final position shown in FIG. 1,
    When the union nut is screwed onto the coupling element 3, the nut grabs the insertion element 1 and tightens it into the coupling element 3 (FIG. 2) until the conical sealing surface 12 at the end of the insertion element 1 comes into contact with the mating conical the sealing surface 13 of the coupling element 3. In the embodiment of FIG. 7, the sealing surfaces 14, 15 are cylindrical.
    A sealing ring is inserted into the annular groove in the insertion member 1, which seals the gap between the insertion member 1 and the coupling member 3 when the sealing surfaces 12, 13 are in engagement state.
    Preferably, when the coupling element 3 and the union nut 5 have a thrust (Fig. 3 and 4) or trapezoidal screw thread (Fig. 5 and 6). In FIG. 3 and 5 show the relative position of the screw thread profiles with the union nut 5 completely screwed onto the coupling element 3, while in FIG. Figures 4 and 6 show the relative position of the screw thread profiles in a threaded connection, somewhat weakened.
    For permanent connection (Figs. 7 and 8), the safety pin 16 can be inserted through the transverse drilling 17 in the union nut, the hole being positioned so that the cotter pin 16 is engaged behind the coupling element 3 (Fig. 7).
    权利要求:
    Claims (3)
    [1]
    Claim
    1. A threaded connecting element for pipes, containing two pipes, at the end of one of which a coupling element is mounted, articulated on a tapered thread with a union nut, fixed by the abutment surface of the annular shoulder of the plug-in embedded element • mounted on the second pipe, and on the coupling and plug-in elements there are conjugated conical and cylindrical sealing surfaces along which they contact each other. a sealing ring installed between the ends of the pipes, which differs in that, with In order to facilitate mounting on the extreme part of the tapered thread of the nut · and the coupling element, a cylindrical thread section having more than one turn is made.
    [2]
    2. The element according to claim 1, with the fact that at least one of the sealing cylindrical surfaces of the insertion or coupling element has an annular groove in which the sealing ring is placed.
    [3]
    3. The item according to paragraphs. 1-2, characterized in that it is provided with a safety cotter pin, and a transverse hole is made in the union nut in which said cotter pin is mounted, which is engaged with the rear part of the coupling element.
    Priority on items 21.05.86 on items 1 and 2; 03.03.87 PP 3.
    t ϋυυ - Fig. 2
    J
    类似技术:
    公开号 | 公开日 | 专利标题
    SU1838706A3|1993-08-30|Threaded connecting member for pipes
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    US6010163A|2000-01-04|Threaded joint for connecting two pipes with a metal to metal seal
    US3712648A|1973-01-23|Self-anchorable pipe joint
    US2374138A|1945-04-17|Pipe joint
    CA1319718C|1993-06-29|Hose coupling
    EP0088507A1|1983-09-14|Improvements in pipe couplings and coupled pipe joints
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    US5562313A|1996-10-08|Threadless connector for electrical conduits
    US3408096A|1968-10-29|Pipe coupling
    同族专利:
    公开号 | 公开日
    DE3709819A1|1987-11-19|
    PL265809A1|1988-05-12|
    US4802695A|1989-02-07|
    DE3709819C2|1988-04-07|
    CA1287079C|1991-07-30|
    AU7312987A|1987-11-26|
    PL152553B1|1991-01-31|
    AU593650B2|1990-02-15|
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    US4659116A|1985-04-29|1987-04-21|Dowell Schlumberger Incorporated|Pipe union for cryogenic fluids|US5678607A|1986-01-15|1997-10-21|Krywitsky; Lee A.|Reusable pipe union and pipe cap assembly for wide thermal cycling|
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    US5060988A|1990-05-08|1991-10-29|Nwd International, Inc.|Hydraulic coupling|
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    US11255470B2|2018-10-23|2022-02-22|Fmc Technologies, Inc.|Heavy duty wing nut|
    法律状态:
    2007-12-20| REG| Reference to a code of a succession state|Ref country code: RU Ref legal event code: MM4A Effective date: 20060521 |
    优先权:
    申请号 | 申请日 | 专利标题
    DE3617014|1986-05-12|
    DE3709819A|DE3709819C2|1986-05-12|1987-03-25|
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