WO1982004111A1 - Hot tap saddle fitting - Google Patents

Hot tap saddle fitting Download PDF

Info

Publication number
WO1982004111A1
WO1982004111A1 PCT/AU1982/000076 AU8200076W WO8204111A1 WO 1982004111 A1 WO1982004111 A1 WO 1982004111A1 AU 8200076 W AU8200076 W AU 8200076W WO 8204111 A1 WO8204111 A1 WO 8204111A1
Authority
WO
WIPO (PCT)
Prior art keywords
chamber
pipe
main pipe
cutter
main
Prior art date
Application number
PCT/AU1982/000076
Other languages
English (en)
French (fr)
Inventor
Pty Ltd Esdan
Original Assignee
Soumar Karel
Erling Earl
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 Soumar Karel, Erling Earl filed Critical Soumar Karel
Priority to DE8282901397T priority Critical patent/DE3270217D1/de
Priority to AT82901397T priority patent/ATE18941T1/de
Publication of WO1982004111A1 publication Critical patent/WO1982004111A1/en
Priority to DK014983A priority patent/DK153722C/da
Priority to MY8700896A priority patent/MY8700896A/xx

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
    • F16L41/00—Branching pipes; Joining pipes to walls
    • F16L41/04—Tapping pipe walls, i.e. making connections through the walls of pipes while they are carrying fluids; Fittings therefor
    • F16L41/06—Tapping pipe walls, i.e. making connections through the walls of pipes while they are carrying fluids; Fittings therefor making use of attaching means embracing the pipe
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/0318—Processes
    • Y10T137/0402—Cleaning, repairing, or assembling
    • Y10T137/0441—Repairing, securing, replacing, or servicing pipe joint, valve, or tank
    • Y10T137/0458—Tapping pipe, keg, or tank
    • Y10T137/0463—Particular aperture forming means
    • Y10T137/0469—Cutter or cutting tool
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/598—With repair, tapping, assembly, or disassembly means
    • Y10T137/612—Tapping a pipe, keg, or apertured tank under pressure
    • Y10T137/6123—With aperture forming means
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T408/00—Cutting by use of rotating axially moving tool
    • Y10T408/50—Cutting by use of rotating axially moving tool with product handling or receiving means
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T408/00—Cutting by use of rotating axially moving tool
    • Y10T408/89—Tool or Tool with support
    • Y10T408/896—Having product-receiving chamber

Definitions

  • This invention relates to a method and apparatus for use in connecting pipes and of particular use for connecting a pipe to a gas main while the main is pressurized.
  • a hot tap saddle fitting In the past pipe connection to a pressurized gas main has been achieved by means of a hot tap saddle fitting. That fitting provides a chamber which is mounted to the main pipe by a collar, the mouth of the chamber seating against the external wall of the pipe and sealing therewith. A drill bit inside the sealed chamber is operable from outside the chamber to drill radially into the main pipe. A subsidiary pipe to be connected with the main is connected to the chamber usually by coupling means integral with the fitting and the drill bit is then operated so as to pierce the main thereby placing the subsidiary pipe in communication with the interior of the main.
  • the present invention provides a hot tap saddle fitting suitable for use with a main pipe made of plastics, and which is of a simpler construction than previously known fittings of the type under discussion.
  • the invention consists in a hot tap saddle fitting of the kind comprising a chamber having an opening, the mouth of the opening being shaped for sealing engagement with the exterior of a plastics main pipe to be saddled, and piercing means within the ' chamber operable from outside the chamber to pierce the main pipe saddled whereby to place the interior of the main pipe in communication with the chamber, .
  • said saddle fitting being characterised in that the piercing means comprise a cutter acting to cut the main pipe saddled in a chordal direction.
  • Figure 1 shows a cross-section of a saddle fitting according to the invention
  • Figure 2 shows a part cross-section on line 2-2 of figure 1.
  • the fitting comprises a cylindrical split collar 1 adapted to sleeve a gas main.
  • Collar 1 has a groove 10 on its internal surface extending in a direction parallel the cylinder axial direction and which facilitates hinge opening of the collar for positioning of the fitting to saddle a main pipe.
  • Collar 1 has radially outwardly extending projections 11 adjacent the split whereby the collar may be clamped tightly to a gas main.
  • projections 11 are wedge shaped to facilitate tight clamping to a main pipe by clamp means not shown in the drawings.
  • connection means 5 is a spigot adapted for connection by the joining method described in co-pending application PCT/AU80/00020 but other connection fittings could be used.
  • Tubular body 3 extends from. chamber 4 in a direction away from connection means 5 to house a hollow tubular cutter 6 which has a cutting edge 61 at the end adjacent chamber 4 of a radius clearance less than the internal radius of tubular body 3.
  • OM Cutter 6 is closed at the end remote from cutting edge 61- Cutter 6 is provided with O-ring 62 which permits movement of the cutter in the axial direction of tubular body 3 while maintaining a seal between cutter 6 and body 3.
  • Closed end 63 of cutter 6 is provided with groove means 64 for connection of a driving tool (not shown in the drawings) whereby the cutter may be driven into chamber 4 from outside the fitting.
  • Tubular .body 3 is provided with radially inwardly extending shoulders 7 which prevent egress of cutter 6 from that end of tubular body 3.
  • a solvent, adhesive, or welding means may be used to ensure a seal between the internal surface of collar 1 adjacent chamber 4 with the outer surface of a mains pipe encircled by collar 1.
  • a subsidiary pipe to be tapped to the mains is connected at 5.
  • Tubular cutter 6 is then driven in the chordal direction towards the pipe so as to cut open the pipe and permitting communication between the main and the subsidiary pipe.
  • fitting is moulded from plastics for example nylon.
  • the cutter may for example be of steel or a plated steel.
  • fittings according to. the invention may be made in a variety of sizes and/or with other junctions, unions or valves integral with tubular body 3.
  • the cutter may be slideable or may be fitted with a screw thread enabling it to be driven towards the main by rotation. While it is highly preferred that the saddle chamber be provided
  • means for making that connection may be manufactured at the time of jointing and need not be part of the saddle fitting itself.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Branch Pipes, Bends, And The Like (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
PCT/AU1982/000076 1981-05-15 1982-05-14 Hot tap saddle fitting WO1982004111A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE8282901397T DE3270217D1 (en) 1981-05-15 1982-05-14 Hot tap saddle fitting
AT82901397T ATE18941T1 (de) 1981-05-15 1982-05-14 Schneidsattel fuer eine druckleitung.
DK014983A DK153722C (da) 1981-05-15 1983-01-14 Fitting til etablering af en roertilslutning
MY8700896A MY8700896A (en) 1981-05-15 1987-12-30 Hot tap saddle fitting

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AU8894/81810515 1981-05-15
AUPE889481 1981-05-15

Publications (1)

Publication Number Publication Date
WO1982004111A1 true WO1982004111A1 (en) 1982-11-25

Family

ID=3769070

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU1982/000076 WO1982004111A1 (en) 1981-05-15 1982-05-14 Hot tap saddle fitting

Country Status (7)

Country Link
US (1) US4541447A (en, 2012)
EP (1) EP0078283B1 (en, 2012)
JP (2) JPS58500769A (en, 2012)
DE (1) DE3270217D1 (en, 2012)
DK (1) DK153722C (en, 2012)
NZ (1) NZ200615A (en, 2012)
WO (1) WO1982004111A1 (en, 2012)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2162916A (en) * 1984-08-08 1986-02-12 Fischer Ag Georg Connecting branch to main pipeline
FR2607742A1 (fr) * 1986-12-05 1988-06-10 Yano Giken Kk Procede et appareil de percage de canalisation pour raccordement

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE456522B (sv) * 1987-11-20 1988-10-10 Thorkild Baumbach Forfarande och verktyg for anslutning av ett forgreningsror till en befintlig rorledning
JPH0312087U (en, 2012) * 1989-06-14 1991-02-07
US5146061A (en) * 1991-10-07 1992-09-08 Institute Of Gas Technology Electrode for an electric discharge machining apparatus
US5577529A (en) * 1995-01-19 1996-11-26 Plasson Maagan Michael Industries Ltd. Tapping fittings
IL114505A (en) * 1995-07-09 1998-02-22 Plasson Maagan Michael Ind Ltd Tapping fitting
US5609181A (en) * 1996-04-02 1997-03-11 Evans; Donald L. Tube connector and tapping device
US5896885A (en) * 1996-06-11 1999-04-27 Phillips Petroleum Company Tapping saddle pipe fitting
US6655406B1 (en) 2002-12-06 2003-12-02 David A. Paddock Hot tapping apparatus and method

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2129250A5 (en, 2012) * 1971-03-19 1972-10-27 Air Comprime Ste Urbaine
AU7099374A (en) * 1973-06-25 1976-01-08 S.R.V. Gebelius Pipe connections
AU7631474A (en) * 1973-12-20 1976-06-17 S.R.V. Gebelius m PIPE CONNECTION MEANS
US4261384A (en) * 1979-07-20 1981-04-14 Gotaverken Motor Ab T-joint fitting
WO1981001737A1 (en) * 1979-12-06 1981-06-25 I Rogstadius Pipe coupling
WO1981002461A1 (en) * 1980-02-26 1981-09-03 T Baumbach Method and means for the connection of a branch pipe to a previously fixed pipe line

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3692044A (en) * 1971-01-18 1972-09-19 Sloane Mfg Co R & G Tapping tee
US3905718A (en) * 1973-12-18 1975-09-16 Mueller Co Driving tool
US4076038A (en) * 1976-01-05 1978-02-28 Phillips Petroleum Company Tapping tee cutter having relieved sidewall
US4067353A (en) * 1976-09-28 1978-01-10 Amp Incorporated Pipeline tap and connecting device
US4294470A (en) * 1978-12-11 1981-10-13 Reed Irrigation Systems Pty Ltd. In-line tube junctions
US4258742A (en) * 1979-04-03 1981-03-31 Phillips Petroleum Company Tapping apparatus
US4415000A (en) * 1982-05-17 1983-11-15 Gotaverken Motor U.S. Inc. T-Joint fitting

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2129250A5 (en, 2012) * 1971-03-19 1972-10-27 Air Comprime Ste Urbaine
AU7099374A (en) * 1973-06-25 1976-01-08 S.R.V. Gebelius Pipe connections
AU7631474A (en) * 1973-12-20 1976-06-17 S.R.V. Gebelius m PIPE CONNECTION MEANS
US4261384A (en) * 1979-07-20 1981-04-14 Gotaverken Motor Ab T-joint fitting
WO1981001737A1 (en) * 1979-12-06 1981-06-25 I Rogstadius Pipe coupling
WO1981002461A1 (en) * 1980-02-26 1981-09-03 T Baumbach Method and means for the connection of a branch pipe to a previously fixed pipe line

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2162916A (en) * 1984-08-08 1986-02-12 Fischer Ag Georg Connecting branch to main pipeline
FR2607742A1 (fr) * 1986-12-05 1988-06-10 Yano Giken Kk Procede et appareil de percage de canalisation pour raccordement

Also Published As

Publication number Publication date
EP0078283A4 (en) 1983-08-09
DK14983A (da) 1983-01-14
US4541447A (en) 1985-09-17
DK153722C (da) 1988-12-27
EP0078283B1 (en) 1986-04-02
JPH0360688U (en, 2012) 1991-06-14
DE3270217D1 (en) 1986-05-07
EP0078283A1 (en) 1983-05-11
NZ200615A (en) 1985-01-31
DK153722B (da) 1988-08-22
DK14983D0 (da) 1983-01-14
JPS58500769A (ja) 1983-05-12

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