EP1664610A1 - Raccord de tuyaux - Google Patents

Raccord de tuyaux

Info

Publication number
EP1664610A1
EP1664610A1 EP04769260A EP04769260A EP1664610A1 EP 1664610 A1 EP1664610 A1 EP 1664610A1 EP 04769260 A EP04769260 A EP 04769260A EP 04769260 A EP04769260 A EP 04769260A EP 1664610 A1 EP1664610 A1 EP 1664610A1
Authority
EP
European Patent Office
Prior art keywords
housing
pipe coupling
coupling according
side walls
tongue
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.)
Withdrawn
Application number
EP04769260A
Other languages
German (de)
English (en)
Inventor
Damir Sudar
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.)
Straub Werke AG
Original Assignee
Straub Werke AG
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 Straub Werke AG filed Critical Straub Werke AG
Publication of EP1664610A1 publication Critical patent/EP1664610A1/fr
Withdrawn legal-status Critical Current

Links

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
    • F16L17/00—Joints with packing adapted to sealing by fluid pressure
    • F16L17/02—Joints with packing adapted to sealing by fluid pressure with sealing rings arranged between outer surface of pipe and inner surface of sleeve or socket
    • F16L17/04—Joints with packing adapted to sealing by fluid pressure with sealing rings arranged between outer surface of pipe and inner surface of sleeve or socket with longitudinally split or divided sleeve
    • 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
    • F16L21/00—Joints with sleeve or socket
    • F16L21/002—Sleeves or nipples for pipes of the same diameter; Reduction pieces
    • F16L21/005—Sleeves or nipples for pipes of the same diameter; Reduction pieces made of elastic material, e.g. partly or completely surrounded by clamping devices
    • 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
    • F16L21/00—Joints with sleeve or socket
    • F16L21/08—Joints with sleeve or socket with additional locking means
    • 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
    • F16L27/00—Adjustable joints, Joints allowing movement
    • F16L27/10—Adjustable joints, Joints allowing movement comprising a flexible connection only, e.g. for damping vibrations
    • F16L27/113—Adjustable joints, Joints allowing movement comprising a flexible connection only, e.g. for damping vibrations the ends of the pipe being interconnected by a rigid sleeve

Definitions

  • the invention relates to an axially tensile pipe coupling with a substantially cylindrical, a longitudinal slot and at both ends radially inwardly bent side walls, by means of a clamping device constricted in diameter, preferably made of metallic material housing and at least one sealing element arranged therein.
  • Pipe couplings of this type are used to connect smoothing pipes and. Fittings.
  • Axial tensile pipe couplings take over the sealing function of the pipe joint and the non-positive connection between the individual pipes. Thus, no additional funds are necessary to connect the individual tubes together.
  • the construction of these pipe couplings allows a high elasticity of the compound and in particular a large Auswinkeliana the tubes.
  • the housing and the anchoring rings are made separately and, as already mentioned above, of different materials.
  • the anchoring rings must then be inserted into the housing before mounting the coupling and secured by additional means against falling out on the transport route. It must also be ensured that the anchoring rings are inserted into the housing in the correct rotational position. This is very time-consuming and can lead to sources of error.
  • the invention has for its object to provide an axially high tensile pipe coupling, which is easier to manufacture and safer in operation.
  • this is achieved in that the end edges of the radially inwardly bent side walls teeth for frictional engagement with the pipes to be joined and that the side walls at an angle of 30 ° to 60 °, preferably at an angle of 45 ° to Longitudinal axis of the pipe coupling are directed against the center of the housing.
  • the function of the previously separate anchoring rings is thus fully in the Housing integrated. This eliminates significant manufacturing and material costs. For example, no additional securing means are necessary. The fact that the coupling is made of only one material may possibly; Also electrochemical corrosion can be avoided by different electrochemical potentials.
  • the teeth In order for the teeth to be able to penetrate deep enough into the surface of the pipes to be joined, even with hard pipe materials, it is advantageous for the teeth to be hardened with respect to the remaining housing material. This hardening of the teeth can also be caused, for example, by solidification during forming of the teeth.
  • Another expedient solution is that the hardening takes place in the area of the teeth to a depth of approximately 0.8 mm by means of laser beams. Hardening by means of laser beams can be used locally very targeted. The fact that the hardening takes place with a limited depth, it can be achieved that the toughness of the core material is maintained.
  • the housing consist of spring steel, preferably of chromium-nickel steel.
  • spring steels have compared to ordinary chrome-nickel steels a much better dimensional stability and also a higher strength. As a result, smaller wall thicknesses of the housing and thus material and weight savings are possible.
  • the housing in the region of the longitudinal slot has at least one extending in the circumferential direction, the longitudinal slot bridging tongue.
  • the tongue is thus also integrated into the housing. This can also be saved significant manufacturing and assembly operations.
  • the tongue is advantageously formed integrally with the housing.
  • the wall thickness of the tongue can be the same as that of the rest of the housing or reduced by an additional processing gear with respect to the wall thickness of the housing.
  • the side walls of the housing also serve to prevent leakage of the sealing element arranged in the housing. So that no gap arises in the region of the longitudinal slot, it is expedient that the side walls also extend at least partially in the region of the tongue. As a result, the sealing element is completely enclosed without additional installation effort in the housing.
  • This inventive structure can also be used independently of any teeth.
  • the tongue should fit in the overlapping region of the housing between the sidewalls of the opposite end. It is therefore advantageous that the tongue is narrower in the axial direction than the rest of the housing. The tongue can thus be threaded between the side walls of the opposite side of the longitudinal slot.
  • the housing has at least one circumferential annular bead in the middle region.
  • the annular bead allows a certain flexibility of the housing, in particular against deflections of the pipes to be joined.
  • This embodiment is particularly advantageous when several beads are arranged axially next to each other.
  • the housing thus becomes a kind of bellows. It is not only favorable with regard to deflections of the tubes, but also with axial length changes of the tubes, for example as a result of temperature changes.
  • annular beads are formed wave-shaped in cross section. Due to the waveform of the annular beads both positive and negative length changes can be compensated by the pipe coupling.
  • FIG. 1 shows a pipe coupling according to the invention, in a perspective view
  • FIG. 2 shows a flat circuit board for producing a housing for the pipe coupling illustrated in FIG. 1;
  • FIG. 3 shows the circuit board according to FIG. 2, with bent side walls
  • Fig. 4 shows the housing of a pipe coupling according to Fig.1, made of a board according to the apparent from Fig. 2 and 3 manufacturing steps
  • the pipe coupling shown in Fig. 1 consists of a generally designated 1 housing and, for example, by welding verbunde- NEN, generally designated 2 tabs.
  • the tabs 2 are formed in cross-section substantially U-shaped and have passage openings 21 for a known per se, not shown on clamping device.
  • the housing 1 is substantially cylindrical and has a longitudinal slot 17.
  • the housing 1 is provided with radially inwardly bent side walls 15, 16.
  • the end edges 11 of the side walls 15, 16 are provided with teeth 12.
  • the tabs 2 have support cams 22, on which the side walls 15 are supported.
  • the housing 1 is provided with a plurality of annular beads 18 arranged next to one another.
  • the annular beads 18 are used to increase the flexibility of the housing 1.
  • larger Auswinkelungen and changes in length of the pipes to be joined are made possible by the annular beads 18 can adapt to the manner of a bellows the Auswinkelung or deformation of the tubes.
  • Fig. 2 shows a punched and partially already preformed board 10 for producing a housing 1 according to Fig. 1.
  • the longitudinally extending end edges 11 of the board 10 are provided with punched teeth 12.
  • One end of the board 10 is formed as a tongue 13 with respect to the remaining board 10 of reduced width.
  • the middle region of the board 10 is provided with longitudinally extending, parallel juxtaposed beads 14.
  • side walls 15, 16 are bent to an angle a of about 45 ° along the end edges 11.
  • the side walls 15, 16 extend also in the region of the tongue 13.
  • the outer width b of the tongue 13, measured over the side walls 15, 16 corresponds approximately to the inner distance a of the side walls 15, 16 at the other end of the board 10th
  • FIG. 4 shows the circuit board 10 according to FIG. 3 in a state rounded to a housing. From the flat bead 14 shown in FIGS. 2 and 3, the circumferential annular bead 18 is formed.
  • the housing has a longitudinal slot 17. By compared to the other housing 1 reduced width, the tongue 13 can be inserted telescopically into the opposite end of the housing 1 and thus the longitudinal slot 17 are bridged by the tongue 13.
  • the radially inwardly directed, provided with teeth 12 side walls 15, 16 are used during clamping of the pipe coupling the non-positive engagement of the housing 1 in the pipe surface.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Joints With Sleeves (AREA)
  • Joints Allowing Movement (AREA)

Abstract

Ce raccord de tuyaux résistant aux tractions axiales comprend un boîtier (1) dont le diamètre est susceptible d'être réduit au moyen d'un dispositif de serrage. Les parois latérales (15) du boîtier (1) sont recourbées radialement vers l'intérieur. Les faces frontales (11) des parois latérales (15) sont pourvues de dents. Lorsque le raccord de tuyaux est serré, les dents pénètrent dans la surface des tuyaux et relient ainsi les tuyaux de manière non-positive. La fente longitudinale (17) est enjambée par la languette (13) lorsque le raccord de tuyaux est serré.
EP04769260A 2003-09-03 2004-09-02 Raccord de tuyaux Withdrawn EP1664610A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH15072003 2003-09-03
PCT/IB2004/002853 WO2005022020A1 (fr) 2003-09-03 2004-09-02 Raccord de tuyaux

Publications (1)

Publication Number Publication Date
EP1664610A1 true EP1664610A1 (fr) 2006-06-07

Family

ID=34230845

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04769260A Withdrawn EP1664610A1 (fr) 2003-09-03 2004-09-02 Raccord de tuyaux

Country Status (3)

Country Link
EP (1) EP1664610A1 (fr)
JP (1) JP2007521451A (fr)
WO (1) WO2005022020A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100171300A1 (en) 2006-07-06 2010-07-08 Straub Werke Ag Housing For A Tube Coupling
ES2386244T3 (es) 2008-02-28 2012-08-14 Straub Werke Ag Elemento de anclaje para acoplamientos de tubos
KR101040685B1 (ko) * 2011-03-07 2011-06-13 벽진산업 주식회사 관 고정용 환봉 연결구
CN104534205A (zh) * 2014-12-26 2015-04-22 山西泫氏实业集团有限公司 一种柔性承插接口铸铁排水管用防脱卡箍
CN105736869A (zh) * 2016-04-29 2016-07-06 任开付 一种水管卡箍

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2834046C2 (de) * 1978-08-03 1982-06-03 Rasmussen Gmbh, 6457 Maintal Schraublose Bandschelle
CH666949A5 (de) 1985-08-09 1988-08-31 Immanuel Straub Rohrkupplung.
DE3737669C1 (de) * 1987-11-06 1988-05-19 Rasmussen Gmbh Rohrkupplung
DE19514940C1 (de) * 1995-04-22 1996-10-02 Diag Design Ag Rohrkupplung
GB9519131D0 (en) 1995-09-19 1995-11-22 Glynwed Foundry Prod Ltd Pipe coupling
DE10123925A1 (de) * 2001-03-17 2002-10-02 Rasmussen Gmbh Rohrschelle
DE10123924B4 (de) * 2001-05-17 2006-01-26 Rasmussen Gmbh Rohrschelle, insbesondere Rohrkupplung

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2005022020A1 *

Also Published As

Publication number Publication date
JP2007521451A (ja) 2007-08-02
WO2005022020A1 (fr) 2005-03-10

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