US20140152001A1 - High pressure-resistant screw connection for pipelines or hose lines having a tapered thread - Google Patents

High pressure-resistant screw connection for pipelines or hose lines having a tapered thread Download PDF

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Publication number
US20140152001A1
US20140152001A1 US14/009,183 US201214009183A US2014152001A1 US 20140152001 A1 US20140152001 A1 US 20140152001A1 US 201214009183 A US201214009183 A US 201214009183A US 2014152001 A1 US2014152001 A1 US 2014152001A1
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US
United States
Prior art keywords
thread
threaded connection
connection body
constructed
connecting device
Prior art date
Legal status (The legal status 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 status listed.)
Abandoned
Application number
US14/009,183
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English (en)
Inventor
Carsten Schippers
Thomas Müller
Oliver Neiske
Andreas Udhöfer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Parker Hannifin Manufacturing Germany GmbH and Co KG
Original Assignee
Parker Hannifin Manufacturing Germany GmbH and Co KG
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 Parker Hannifin Manufacturing Germany GmbH and Co KG filed Critical Parker Hannifin Manufacturing Germany GmbH and Co KG
Assigned to Parker Hannifin Manufacturing Germany GmbH & Co. KG reassignment Parker Hannifin Manufacturing Germany GmbH & Co. KG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: SCHIPPERS, CARSTEN, UDHOEFER, ANDREAS, MUELLER, THOMAS, NEISKE, OLIVER
Publication of US20140152001A1 publication Critical patent/US20140152001A1/en
Abandoned legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
    • F16L19/02—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
    • F16L19/02—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member
    • F16L19/0212—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member using specially adapted sealing means
    • F16L19/0218—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member using specially adapted sealing means comprising only sealing rings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
    • F16L19/02—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member
    • F16L19/025—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member the pipe ends having integral collars or flanges
    • F16L19/028—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member the pipe ends having integral collars or flanges the collars or flanges being obtained by deformation of the pipe wall
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
    • F16L19/06—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts in which radial clamping is obtained by wedging action on non-deformed pipe ends
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
    • F16L19/06—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts in which radial clamping is obtained by wedging action on non-deformed pipe ends
    • F16L19/063—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts in which radial clamping is obtained by wedging action on non-deformed pipe ends by means of conical threaded surfaces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
    • F16L19/06—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts in which radial clamping is obtained by wedging action on non-deformed pipe ends
    • F16L19/065—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts in which radial clamping is obtained by wedging action on non-deformed pipe ends the wedging action being effected by means of a ring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
    • F16L19/08—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts with metal rings which bite into the wall of the pipe
    • F16L19/10—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts with metal rings which bite into the wall of the pipe the profile of the ring being altered
    • F16L19/12—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts with metal rings which bite into the wall of the pipe the profile of the ring being altered with additional sealing means

Definitions

  • the invention relates to a connecting device for pipe or hose lines with a threaded connecting body having a bore for passing through a medium flowing through the pipe or hose line and with a pipe-like end piece which can be plugged into a receptacle constructed at the front end of the threaded connection body and can be fixed therein by means of a union nut which has an internal thread, which can be screwed onto an external thread applied on the outer circumference of the threaded connection body, and is arranged rotatably between a release position and an installed position, wherein the receptacle of the threaded connection body is constructed in the form of an expanding cone and the circumferential surface of the end piece engaging into the receptacle has a conical shape corresponding to the receiving cone constructed on the threaded connection body and tapering to the end of the end piece.
  • a generic connecting device is known from DD 204 059 A1.
  • the external thread constructed on the threaded connection body and the associated internal thread constructed in the union nut are in each case constructed as a cylindrical thread, so that the circumferential surface of the threaded connection body carrying the external thread has a course parallel to the longitudinal axis of the connecting device.
  • the receptacle of the threaded connection body accommodating the end piece has the shape of a cone expanding outwardly towards the end piece to be plugged in, preferably in the form of a so-called 24° cone.
  • the end piece is constructed with a conicity corresponding to the receiving cone of the threaded connection body in the region to be pushed into the receiving cone of the threaded connection body.
  • the known connecting device is connected with the disadvantage that when installing, owing to the cylindrical thread, the union nut must initially be screwed for a plurality of rotations onto the threaded connection body before it is tightened with a suitable tool until a predetermined torque in the final installation position is reached. Installation of this type is troublesome and difficult to carry out, particularly in the case of connecting devices to be arranged in regions which are difficult to access.
  • the invention is therefore based on the object of simplifying the installation of a generic connecting device and also avoiding the previously mentioned disadvantages in the process.
  • the invention provides that the circumferential surface of the threaded connection body carrying the external thread has a course in the direction of its front end which is inclined oppositely to the cone of the receptacle and the union nut has a course complementary thereto on its surface carrying the internal thread, and external thread and internal thread are constructed as tapered threads such that in the case of installed connecting device, radial force exerted by the conical end piece onto the receiving cone constructed in the threaded connection body is directed oppositely to a radial force emanating from the tapered thread with the union nut screwed on.
  • a further advantage consists in the fact that owing to the course, which is connected with the use of the conical geometry, of the surfaces of the threaded connection body and union nut carrying the thread turns in the form of a cone tapering towards the end piece to be pushed in, the forces exerted radially outwardly by the end piece pushed into the receiving cone of the threaded connection body during the final installation of the connecting device face radially inwardly directed reaction forces correspondingly emanating from the conical screw connection, which additionally likewise increase with growing connecting force of the end piece in the threaded connection body.
  • a widening of the receiving cone at the threaded connection body cannot start, so that the safety and also the leak-tightness of the connecting device according to the invention are improved.
  • the tapered thread is constructed as a conical apex thread.
  • the tapered thread is constructed as a thread having a trapezoidal profile with flattened thread flanks.
  • a trapezoidal thread of this type has a larger pitch and fewer rotations are therefore required during installation compared to a conical apex thread.
  • the gap remaining during the first installation forms a retightening reserve which is required to the extent that the union nut is screwed some degree further onto the threaded connection body in the context of repeated installations of the connecting device to compensate settling phenomena and tolerances during the production of the thread. So that the union nut does not unintentionally loosen in the case of the installed connecting device, the loosening torque must not be too small.
  • the flank angle of the tapered thread is to be chosen to be such that at least 60° of the tightening torque are required in order to release the connecting device again by rotating the union nut counter to the tightening direction of rotation.
  • the geometry of the tooth flanks of the tapered thread is designed in such a manner that before the installation position of the union nut defined by a predetermined tightening torque on the threaded connection body is reached, the respectively interacting tooth flanks of external thread and internal thread bear against one another and a gap remains in the respective thread root.
  • the tooth flanks of external thread and internal thread already run together even before reaching the installation position, without contact being produced in the thread root. As the tooth flanks run together, the torque increases, as the thread profiles of external thread and internal thread are pushed into one another like wedges in each case.
  • the external thread can be constructed on the threaded connection body and the internal thread constructed in the union nut to have a mutually different thread pitch in each case.
  • the degree and the force/moment curve of the desired self locking of threaded connection body to union nut is variable. If one chooses a slightly larger thread pitch on the threaded connection body compared to the union nut in accordance with an exemplary embodiment of the invention, a thread locking wedge action begins only over the respectively first and last thread pitch.
  • the size of the deviation in the thread pitch in this case describes the size of the contact surfaces and the action of self locking resulting thereby.
  • the tensile loading caused by the prevailing pipe internal pressure during operation and acting on the thread flanks of the tapered thread can be displaced onto the larger rear thread diameter in the tapered thread.
  • An in turn alternative embodiment of a self locking of the tapered thread is characterised according to an exemplary embodiment of the invention in that the thread turns of the external thread applied on the threaded connection body and the internal thread constructed in the union nut have a different opening angle of their tooth flanks. If, for example according to an exemplary embodiment of the invention, one chooses a larger opening angle for the tooth flanks of the thread turns on the union nut than in the region of the threaded connection body, then this effects a locking of the tapering thread at the front end of the threaded connection body in the union nut, as the different opening angles meet. The further thread turns in the rear course of the thread remain uncontacted.
  • a self locking of the tapered thread before reaching a block installation state can be strengthened according to an exemplary embodiment in that the tightening torque defining the final installation state of the connecting device is set up in such a manner that the end section of the threaded connection body lying between the receiving cone and the external circumferential surface carrying the external thread is elastically inwardly pretensioned towards the end piece pushed into the receiving cone.
  • the recommended torque for achieving the final installation position of the connecting device is chosen such that in the case of the meeting of the different opening angles of the thread turns, the open end section of the threaded connection body is reduced slightly in terms of its diameter, that is to say is elastically pushed inwards.
  • the end section On its inner side, the end section in this case experiences support due to the likewise conical end of the end piece pushed into the receiving cone. As a result, a self locking in the form of a circumferential wedge between the end piece and the union nut is created, as a result of which the loosening torque of the connecting device is increased.
  • An in turn alternative design of the self locking in the case of a tapered thread is achieved according to an exemplary embodiment of the invention in that the external thread applied on the threaded connection body has a larger axial length than the internal thread constructed in the union nut.
  • the components run into one another somewhat. This leads to a deformation and jamming/self locking of the components.
  • Such a jamming can be both plastic and elastic, that is to say the self locking of the tapered thread can only start during the initial installation of the connecting device or else also become effective in the case of repeated installations and thus additionally increase the loosening torque.
  • a groove with a seal arranged therein to be constructed in the internal surface of the receiving cone of the threaded connection body accommodating the conical region of the end piece.
  • FIG. 1 shows a connecting device with a connecting body and an end piece plugged into the same and also a union nut fixed on the connecting body by means of a tapered thread constructed as a conical apex thread in the state of final installation in a partially cut away side view,
  • FIG. 2 shows the connecting device according to FIG. 1 in a different embodiment
  • FIG. 3 shows an alternative embodiment of the tapered thread called upon for connecting the threaded connection body and union nut as so-called trapezoidal thread in a partially cut away side view
  • FIG. 4 shows the thread profile constructed as conical apex thread of the external thread applied on the threaded connection body and the internal thread located in the union nut when engaging in the final installation position according to FIGS. 1 and 2 in an enlarged side view
  • FIG. 5 shows the trapezoidal thread according to FIG. 3 in an illustration according to FIG. 4 .
  • FIG. 6 shows the trapezoidal thread of threaded connection body and union nut set up for a self locking by means of mutually bearing tooth flanks before reaching the installation position
  • FIG. 7 shows the trapezoidal thread according to FIG. 6 in the installation position of threaded connection body and union nut
  • FIG. 8 shows the trapezoidal thread applied on threaded connection body and union nut for a self locking by means of different thread pitch thereof before reaching the installation position
  • FIG. 9 shows the trapezoidal thread according to FIG. 8 in the installation position
  • FIG. 10 shows the trapezoidal thread provided on threaded connection body and union nut for a self locking by means of different opening angle of the tooth flanks thereof in the installation position of the connecting device
  • FIG. 11 shows tapered thread set up for a self locking by means of different lengths of the trapezoidal thread applied on threaded connection body and union nut, before reaching the installation position
  • FIG. 12 shows the trapezoidal thread according to FIG. 11 in the installation position of the connecting device.
  • the connecting device which can initially be seen from FIG. 1 , consists of a threaded connection body 10 , which has a receiving cone 11 at its front (right) end for accommodating an end piece 13 plugged therein, wherein the receiving cone 11 has the shape of an expanding cone.
  • the external circumferential surface 12 of the threaded connection body located in the region of the receiving cone 11 has an opposite inclined course in the direction of its front end to the cone of the receiving cone 11 , wherein an external thread 30 is constructed on this circumferential surface 12 .
  • the end piece 13 plugged into the receiving cone 11 of the threaded connection body 10 is an integral constituent of a pipe 14 , wherein a bead 15 is produced by means of a corresponding reshaping at the end piece 13 or the pipe 14 .
  • the bead 15 on the one hand constructs a support surface 16 , at its end facing away from the threaded connection body 10 , for a union nut 17 pushed over the pipe 14 , and at the same time, the front circumferential surface of the end piece 13 is constructed as a conical surface 19 which has a conicity corresponding to the conicity of the receiving cone 11 on the threaded connection body 10 .
  • the union nut pushed over the pipe 14 and supported on the support surface 16 of the pipe bead 15 has a conically expanding internal surface 18 in its interior, on which an internal thread 31 is constructed.
  • External thread 30 of the threaded connection body 10 and internal thread 31 of the union nut 17 together form a tapered thread with a corresponding thread pitch owing to the conicity of circumferential surface 12 and internal surface 18 respectively, which are set up to match.
  • the tapered thread is constructed as a conical apex thread.
  • a groove 20 with a sealing ring 21 inserted therein is constructed on the inner circumferential surface of the receiving cone 11 .
  • an indicator ring 22 is also illustrated on the external circumference of the threaded connection body, by means of which the installation state of the connecting device can be made discernible. It is not necessary to know the construction and function of the indicator ring in connection with the present invention.
  • FIG. 2 Insofar as a slightly modified configuration of the invention is illustrated in FIG. 2 , the difference consists in the fact that the end piece 13 is constructed cylindrically with connecting pipe 14 , wherein a cutting ring 23 is attached on the external circumference of the end piece 13 plugged into the receiving cone 11 , which cutting ring then constructs, on the external circumference thereof, the conical bearing surface 24 against the receiving cone 11 of the threaded connection body 10 corresponding thereto.
  • the arrangement of a cutting ring of this type is known in principle from DE 40 38 539 C1.
  • a conical surface for bearing on the receiving cone 11 is constructed in the region of the end piece 13 plugged into the receiving cone 11 of the threaded connection body 10 .
  • the constructive shape in which this conical surface is individually produced or constructed is irrelevant for the realisation of the connecting device according to the invention.
  • a tapered thread constructed as a trapezoidal thread is also suitable in the same way.
  • FIGS. 4 and 5 the construction of both a conical apex thread and a trapezoidal thread is illustrated with a protection against over assembly or a retightening reserve.
  • the respective thread turns of the internal thread 31 of the union nut 17 and external thread 30 of the threaded connection body 10 are configured in such a manner in terms of design that in the installed state, the tooth flanks 25 a of the external thread 30 and tooth flanks 26 a of internal thread 31 placed in the screwing direction bear against one another, wherein a gap 28 remains in each case at the opposite tooth flanks 25 b or 26 b and also in the thread root 27 .
  • This gap 28 in particular forms a retightening reserve which is required to the extent that the union nut 17 is screwed some degree further onto the threaded connection body 10 in the context of repeated installations of the connecting device.
  • FIGS. 6 to 12 relate to the establishment of a self locking in the case of the tapered thread used, the realisation thereof on the basis of a tapered thread constructed as trapezoidal thread is explained.
  • the correspondingly explained design configurations of the trapezoidal thread can however likewise be constructed in the case of conical apex threads, without this being illustrated or explained in detail.
  • the self locking of the trapezoidal thread constructed on the threaded connection body 10 and union nut 17 in each case is realised in that the geometry of the respective tooth flanks 25 and 26 of the interacting thread turns is designed in such a manner that in the installation position, the tooth flanks 25 and 26 bear against one another and a gap 28 remains in turn in the respective thread root 27 .
  • the respectively mutually adjacent tooth flanks 25 a and 26 a on the one hand and 25 b and 26 b on the other hand bear against one another, leaving a gap 28 in the thread root 27 .
  • thread profiles of external thread 30 and internal thread 31 have pushed into one another like wedges in each case during the installation, the torque increases owing to the running together of the tooth flanks 25 and 26 connected therewith, which leads to the desired self locking.
  • the self locking of the trapezoidal thread constructed on the threaded connection body 10 and union nut 17 in each case is realised in that the external thread 30 constructed on the threaded connection body 10 and the internal thread constructed in the union nut 17 have a mutually different thread pitch in each case.
  • a thread locking wedge action occurs only over the respectively first and last thread turn. The tooth flanks of external thread 30 and internal thread 31 lying therebetween remain uncontacted.
  • FIG. 10 An in turn alternative design of the self locking of the trapezoidal thread illustrated by way of example emerges from FIG. 10 .
  • external thread 30 and internal thread 31 in each case have a differently sized opening angle of their tooth flanks 25 a, 25 b and 26 a, 26 b respectively. If one chooses an opening angle of for example 12° for the internal thread 31 constructed on the union nut 17 and an opening angle of 11° for the external thread 30 constructed on the threaded connection body 10 , then this effects a locking of the respectively tapering thread only at the front end of the threaded connection body 10 reaching into the interior of the union nut 17 , as here the thread turns constructed with different opening angles meet. The further thread turns in the course of the rear screw connection remain uncontacted.
  • the self locking is realised in that the external thread 30 applied on the threaded connection body 10 has a larger axial length than the internal thread 31 constructed in the union nut 17 .
  • the final installation position is reached, a partial running together of the thread turns takes place, which leads to a deformation and locking or self locking of the components against one another.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)
  • Joints With Pressure Members (AREA)
  • Joints That Cut Off Fluids, And Hose Joints (AREA)
  • Non-Disconnectible Joints And Screw-Threaded Joints (AREA)
US14/009,183 2011-04-01 2012-03-30 High pressure-resistant screw connection for pipelines or hose lines having a tapered thread Abandoned US20140152001A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102011015895 2011-04-01
DE102011015895.2 2011-04-01
PCT/EP2012/055817 WO2012131049A1 (de) 2011-04-01 2012-03-30 Hochdruckfeste verschraubung für rohr- oder schlauchleitungen mit einem kegelgewinde

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2012/055817 A-371-Of-International WO2012131049A1 (de) 2011-04-01 2012-03-30 Hochdruckfeste verschraubung für rohr- oder schlauchleitungen mit einem kegelgewinde

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US15/581,474 Continuation US10955076B2 (en) 2011-04-01 2017-04-28 High-pressure resistant screw connection for pipe or hose lines with a tapered thread

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Publication Number Publication Date
US20140152001A1 true US20140152001A1 (en) 2014-06-05

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ID=45974268

Family Applications (2)

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US14/009,183 Abandoned US20140152001A1 (en) 2011-04-01 2012-03-30 High pressure-resistant screw connection for pipelines or hose lines having a tapered thread
US15/581,474 Active 2033-04-05 US10955076B2 (en) 2011-04-01 2017-04-28 High-pressure resistant screw connection for pipe or hose lines with a tapered thread

Family Applications After (1)

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US15/581,474 Active 2033-04-05 US10955076B2 (en) 2011-04-01 2017-04-28 High-pressure resistant screw connection for pipe or hose lines with a tapered thread

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US (2) US20140152001A1 (es)
EP (1) EP2694856B1 (es)
JP (1) JP5964406B2 (es)
KR (1) KR20140044320A (es)
CN (1) CN103748397B (es)
AU (1) AU2012237283A1 (es)
BR (1) BR112013025155A2 (es)
CA (1) CA2831879A1 (es)
MX (1) MX345574B (es)
RU (1) RU2573864C2 (es)
WO (1) WO2012131049A1 (es)
ZA (1) ZA201308181B (es)

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US10281068B2 (en) 2013-09-20 2019-05-07 Siemens Aktiengesellschaft Pipe connection arrangement, high-pressure fluid line system of a dual fuel engine, dual fuel engine and use of a tension nut
US11300234B2 (en) 2017-08-07 2022-04-12 Eaton Intelligent Power Limited Fluid fitting
US11306852B2 (en) 2017-08-07 2022-04-19 Eaton Intelligent Power Limited Fluid fitting

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JP2014185674A (ja) * 2013-03-22 2014-10-02 On Industries Ltd 薄肉ステンレス鋼管と継手の接続機構
US10883640B2 (en) 2016-06-24 2021-01-05 Eaton Intelligent Power Limited Fluid couplings, systems, and methods
US11149883B2 (en) 2016-06-24 2021-10-19 Eaton Intelligent Power Limited Fluid couplings, systems, and methods
CN108458188A (zh) * 2018-03-13 2018-08-28 西南石油大学 一种防渗透的非金属柔性复合软管快速连接接头
FR3084131B1 (fr) 2018-07-20 2021-01-01 Commissariat Energie Atomique Connecteur fluidique aisement manœuvrable
EP3953629B1 (en) * 2019-06-13 2023-12-06 Parker-Hannifin Corporation Threaded coupling assemblies for interconnecting fluid-carrying conduits
US20230323745A1 (en) * 2022-04-08 2023-10-12 Baker Hughes Oilfield Operations Llc Liner system and method
US11898423B2 (en) 2022-04-08 2024-02-13 Baker Hughes Oilfield Operations Liner system and method
US11988076B2 (en) 2022-04-08 2024-05-21 Baker Hughes Oilfield Operations Llc Method for assembling a liner system

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US11821547B2 (en) 2017-08-07 2023-11-21 Eaton Intelligent Power Limited Fluid fitting

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EP2694856A1 (de) 2014-02-12
AU2012237283A1 (en) 2013-10-17
MX345574B (es) 2017-02-03
CN103748397B (zh) 2016-05-04
ZA201308181B (en) 2014-07-30
CA2831879A1 (en) 2012-10-04
RU2013143854A (ru) 2015-05-10
CN103748397A (zh) 2014-04-23
JP5964406B2 (ja) 2016-08-03
EP2694856B1 (de) 2019-02-06
US10955076B2 (en) 2021-03-23
BR112013025155A2 (pt) 2017-10-17
KR20140044320A (ko) 2014-04-14
MX2013011395A (es) 2014-04-16
US20170268706A1 (en) 2017-09-21
NZ615901A (en) 2015-05-29
JP2014514515A (ja) 2014-06-19
RU2573864C2 (ru) 2016-01-27
WO2012131049A1 (de) 2012-10-04

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