WO2023023694A1 - Pipe puncture tool - Google Patents
Pipe puncture tool Download PDFInfo
- Publication number
- WO2023023694A1 WO2023023694A1 PCT/AU2022/050816 AU2022050816W WO2023023694A1 WO 2023023694 A1 WO2023023694 A1 WO 2023023694A1 AU 2022050816 W AU2022050816 W AU 2022050816W WO 2023023694 A1 WO2023023694 A1 WO 2023023694A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- pipe
- perforation system
- actuator
- base section
- drive shaft
- Prior art date
Links
- 239000004698 Polyethylene Substances 0.000 claims description 11
- 229920000573 polyethylene Polymers 0.000 claims description 11
- 239000012530 fluid Substances 0.000 claims description 7
- 235000015895 biscuits Nutrition 0.000 claims description 6
- -1 polyethylene Polymers 0.000 claims description 5
- 229920000642 polymer Polymers 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 3
- 230000000717 retained effect Effects 0.000 claims description 3
- 239000007788 liquid Substances 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 5
- 239000002699 waste material Substances 0.000 description 4
- 238000009420 retrofitting Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000001311 chemical methods and process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000002262 irrigation Effects 0.000 description 1
- 238000003973 irrigation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000010297 mechanical methods and process Methods 0.000 description 1
- 230000005226 mechanical processes and functions Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
- B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
- B26F1/02—Perforating by punching, e.g. with relatively-reciprocating punch and bed
- B26F1/14—Punching tools; Punching dies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
- B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
- B26F1/38—Cutting-out; Stamping-out
- B26F1/3846—Cutting-out; Stamping-out cutting out discs or the like
-
- 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
-
- 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
- F16L47/00—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics
- F16L47/26—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics for branching pipes; for joining pipes to walls; Adaptors therefor
- F16L47/34—Tapping pipes, i.e. making connections through walls of pipes while carrying fluids; Fittings therefor
-
- 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
- F16L47/00—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics
- F16L47/26—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics for branching pipes; for joining pipes to walls; Adaptors therefor
- F16L47/34—Tapping pipes, i.e. making connections through walls of pipes while carrying fluids; Fittings therefor
- F16L47/345—Tapping pipes, i.e. making connections through walls of pipes while carrying fluids; Fittings therefor making use of attaching means embracing the pipe
-
- 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
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/07—Arrangement or mounting of devices, e.g. valves, for venting or aerating or draining
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D28/00—Shaping by press-cutting; Perforating
- B21D28/24—Perforating, i.e. punching holes
- B21D28/28—Perforating, i.e. punching holes in tubes or other hollow bodies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D28/00—Shaping by press-cutting; Perforating
- B21D28/24—Perforating, i.e. punching holes
- B21D28/34—Perforating tools; Die holders
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
- B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
- B26F1/0015—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor specially adapted for perforating tubes
Definitions
- the present invention relates generally to tools and apparatus for penetrating a new hole into an existing operational pipe carrying gasses or fluids for the purpose of connecting an additional pipe for carrying such fluids of gas.
- PE pipes are very popular for domestic, mining, industrial and irrigation applications, and often provide advantages over alternative piping solutions such as iron, steel or cement pipes.
- PE pipes are commonly used for both above and below ground pipelines, including pressurised fluid or gas supply pipe applications, and for sewerage pipe applications.
- a “Hot Tap Drill” branch connection can be installed with a saddle connection, where the saddle is welded to the pipe with a valve.
- a “Hot Tap” cutting tool is sealed to the branch connection, passes through a valve and cuts into the existing pipe. The drill is then retracted back past the valve, the valve isolated and the hot tap tool recovered.
- retrofitting can contaminate the pipeline network with cutting waste created when connecting the new pipe to the existing pipe, or from dirt, ground fluid or other pollutants.
- a pipe puncture system comprising: a drive shaft having a distal end and a driven end; a hole cutter connected to the distal end of the drive shaft; an actuator connected to the driven end of the drive shaft; and a base section that receives the hole cutter and the drive shaft; wherein in use the base section seals a space between a pipe and the actuator, enabling a pressure in the pipe to be maintained after the hole cutter perforates the pipe.
- the base section includes a valve.
- the valve is positioned between a pipe end and an actuator end of the base section, enabling the hole cutter to be a) retracted away from the pipe inside the base section to a position between the valve and the actuator end, and then b) sealed from a perforation in the pipe by closure of the valve.
- the base section is removably connectable to the actuator using at least one fastener.
- the actuator is a hydraulic, pneumatic or mechanical actuator.
- the actuator comprises an adjustable collar that is clampable to the drive shaft, enabling an operational length of the drive shaft to be varied.
- the hole cutter comprises a plurality of shark-tooth shaped blades.
- the hole cutter comprises blades that define a cylindrical cutting edge.
- the base section comprises a saddle that is connectable to the pipe.
- the saddle is weldable to the pipe.
- the pipe is a polymer pipe.
- the pipe is a polyethylene (PE) pipe.
- PE polyethylene
- the actuator effects translational but not rotational motion of the drive shaft relative to the pipe.
- the pipe comprises pressurised fluid or gas.
- the actuator is connectable to the base section via a stub flange.
- an O-ring positioned in a centre hole of the stub flange seals against an outer surface of the drive shaft.
- the hole cutter is hollow and comprises a cutting edge having an inside bevel, enabling a biscuit cut from the pipe to be compressed during cutting by the inside bevel, and thus the biscuit is retained inside the hole cutter during retraction of the hole cutter away from the pipe.
- the cutting edge comprises a double bevel.
- the base section forms the base of a high-point vent in the pipe following removal of the actuator and the hole cutter from the base section.
- FIG. 1 is a side view of a pipe perforation system, according to some embodiments of the present invention.
- FIG. 2 is a sectional view of Section D-D from FIG. 1 .
- FIG. 3 is a further side view of components of the pipe perforation system FIG. 1 , excluding the base section.
- FIG. 4 is a close up view of the hole cutter of FIG. 1 , according to some embodiments of the present invention.
- FIG. 5 is another close up view of the hole cutter of FIG. 1 , showing blades cutting through the outer surface of a pipe.
- FIG. 6 is a close up view of a blade of the hole cutter of FIG. 1 cutting into the wall of a pipe, according to some embodiments of the present invention.
- the present invention relates to an improved pipe cutting system. Elements of the invention are illustrated in concise outline form in the drawings, showing only those specific details that are necessary to understanding the embodiments of the present invention, but so as not to clutter the disclosure with excessive detail that will be obvious to those of ordinary skill in the art in light of the present description.
- adjectives such as first and second, inside and outside, above and below, longitudinally and transverse, top and bottom, upper and lower, rear, front and side, etc., are used solely to define one element or method step from another element or method step without necessarily requiring a specific relative position or sequence that is described by the adjectives.
- Words such as “comprises” or “includes” are not used to define an exclusive set of elements or method steps. Rather, such words merely define a minimum set of elements or method steps included in a particular embodiment of the present invention.
- the present invention is defined as a pipe perforation system, comprising: a drive shaft having a distal end and a driven end; a hole cutter connected to the distal end of the drive shaft; an actuator connected to the driven end of the drive shaft; and a base section that receives the hole cutter and the drive shaft; wherein in use the base section seals a space between a pipe and the actuator, enabling a pressure in the pipe to be maintained after the hole cutter perforates the pipe.
- Advantages of some embodiments of the present invention include a system that enables a T-junction or “saddle Connection” to be formed in a pressurised pipe without the need to depressurise or stop liquid or gas flow in the pipe.
- Still other advantages of some embodiments include the ability to cut a hole in a pipe wall without damaging or collapsing the pipe wall.
- FIG. 1 is a side view of a pipe perforation system 100, according to some embodiments of the present invention.
- the system 100 includes an actuator 105 that receives a driven end of a drive shaft 110, where the driven end of the drive shaft 110 is clamped to the actuator 105 using a radial collar 112.
- the drive shaft 110 then extends through a base section 115, and a distal end of the drive shaft 110 is connected to a hole cutter 120.
- the hole cutter 120 is shown projecting through a cylindrical pipe 125, such as a pressurised fluid or gas pipe, to an internal cavity of the pipe 125.
- a cylindrical pipe 125 such as a pressurised fluid or gas pipe
- An end view of the cylindrical pipe 125 is illustrated.
- a curved saddle 130 enables sealing of the base sectionl 15 against an external surface of the existing pipe 125.
- the base section 115 further includes a valve 135, and a welded flange 140 is spaced away from the valve 135 enables connection of the actuator 105.
- the welded flange 140 enables removable connection of the base section 115 to the actuator 105 using, for example, radial bolts 145.
- An extension of the base section 115 between the valve 125 and the stub flange 140 defines a pressure lock 150 into which the hole cutter 120 can be retracted.
- FIG. 2 is a sectional view of Section D-D from FIG. 1 , further illustrating the system 100.
- a vent valve 201 can be used to de-pressure the space above the valve 135, with the valve 135 closed, such that the hole cutter 120 can be removed by unbolting it at the stub flange 140.
- a prospective location for a hole in the pipe 125 is first identified.
- the saddle 130 of the base section 115 is then sealed over and around the location for the hole.
- an underside of the saddle 130 can comprise a layer of polyethylene or other plastic that is then welded to the surface of the pipe 125 using an electrical, chemical or mechanical process.
- Other connection processes, such as mechanical straps around pipe 125, also can be used to robustly connect the saddle 130 to the pipe 125.
- the drive shaft 110 is then clamped to the actuator 105 using the radial collar 112, ensuring adequate travel of the hole cutter 120 between a starting position inside the base section 115 and a finishing position inside the pipe 125.
- the hole cutter 120 and drive shaft 110 are directed into the base section 115 and the actuator 105 is bolted to the base section 115 using the radial bolts 145. Then, with the valve 135 in an open position, the actuator 105 is activated, which forces the drive shaft 110 and the hole cutter 120 toward an external surface of the pipe 125. The hole cutter 120 then cuts through the pipe 125 using a smooth translational motion, and without rotation of the cutter 120.
- the radial collar 112 is loosened from the drive shaft 110 and the hole cutter 120 is retracted away from the pipe 125 and into the pressure lock 150 between the valve 135 and the actuator end of the base section 115.
- the valve 135 is then closed, which seals the pressure lock 150 from the internal cavity of the pipe 125.
- the vent valve 201 is then opened to release pressure between the valve 135 and the flange 140.
- the actuator 105 then can be unbolted from the base section 115 and removed.
- the base section 115 is then able to function as a base of a T- junction in the pipe 125.
- a pipe branch (not shown) or an apparatus such as a high-point vent (not shown) can be connected to the stub flange 140.
- the valve 135 can be re-opened, enabling a flow from or to the pipe 125 through the perforation in the pipe 125 formed beneath the saddle 130.
- FIG. 3 is a further side view of components of the pipe perforation system 100, excluding the base section 115.
- the actuator 105 can be of various designs including, for example, hydraulic, pneumatic or mechanical actuator designs, which can generate linear motion of the drive shaft 110 toward the pipe 125.
- FIG. 4 is a close up view of the hole cutter 120, according to some embodiments of the present invention.
- the hole cutter 120 includes two shark-tooth shaped blades 405, 410 that are displaced from each other by 180 degrees.
- the blades 405, 410 enable the cutter 120 to readily puncture a typical polyethylene (PE) pipe, such as a typical 16 to 40 mm diameter PE gas pipe, through translational motion of the cutter 120 into the pipe and without requiring rotation of the cutter 120.
- PE polyethylene
- Alternative blade designs can be scaled and tuned to cut various sizes of holes through various types of polymer or other non-brittle pipes.
- FIG. 5 is another close up view of the hole cutter 120, showing the blades 405, 410 cutting through the outer surface of a pipe 125.
- FIG. 6 is a close up view of the blade 405 of the hole cutter 120, according to some embodiments.
- a cutting edge of the blade 405 comprises a double bevel, which assists in efficiently cutting through the pipe 125 without generating swarf, and without deforming the blade 405 or collapsing the wall of the pipe 125.
- the angle of the inside bevel 605 on the blade 405 causes an oval biscuit that is cut away from the pipe 125 to be compressed during cutting and thus retained inside a hollow portion of the cutter 120 during retraction of the cutter 120 away from the pipe 125.
- the biscuit then can be discarded, leaving a clear hole in the pipe 125 with no swarf or other waste inside the pipe 125 or the base section 115.
- the absence or minimisation of the angle on the outside of bevel 605 can ensure that the hole cutter 120 does not compress material outwardly, which can reduce drag on the pipe 125 as the blade 405 traverses the pipe 125 during and after cutting.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Branch Pipes, Bends, And The Like (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2022333521A AU2022333521A1 (en) | 2021-08-24 | 2022-07-29 | Pipe puncture tool |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2021221505 | 2021-08-24 | ||
AU2021221505A AU2021221505A1 (en) | 2021-08-24 | 2021-08-24 | Pipe puncture tool |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2023023694A1 true WO2023023694A1 (en) | 2023-03-02 |
Family
ID=85321337
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/AU2022/050816 WO2023023694A1 (en) | 2021-08-24 | 2022-07-29 | Pipe puncture tool |
Country Status (2)
Country | Link |
---|---|
AU (2) | AU2021221505A1 (en) |
WO (1) | WO2023023694A1 (en) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3821965A (en) * | 1973-08-06 | 1974-07-02 | D Reynolds | Apparatus for forming a hole in a pipe |
US5257644A (en) * | 1992-06-12 | 1993-11-02 | Institute Of Gas Technology | Hot tap cutter for plastic pipe |
JP2013199991A (en) * | 2012-03-26 | 2013-10-03 | Suiken:Kk | Continuous flow valve insertion method |
US20160138747A1 (en) * | 2013-07-02 | 2016-05-19 | Johnny Butler | System for cutting a workpiece and method for the same |
-
2021
- 2021-08-24 AU AU2021221505A patent/AU2021221505A1/en active Pending
-
2022
- 2022-07-29 WO PCT/AU2022/050816 patent/WO2023023694A1/en active Application Filing
- 2022-07-29 AU AU2022333521A patent/AU2022333521A1/en active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3821965A (en) * | 1973-08-06 | 1974-07-02 | D Reynolds | Apparatus for forming a hole in a pipe |
US5257644A (en) * | 1992-06-12 | 1993-11-02 | Institute Of Gas Technology | Hot tap cutter for plastic pipe |
JP2013199991A (en) * | 2012-03-26 | 2013-10-03 | Suiken:Kk | Continuous flow valve insertion method |
US20160138747A1 (en) * | 2013-07-02 | 2016-05-19 | Johnny Butler | System for cutting a workpiece and method for the same |
Also Published As
Publication number | Publication date |
---|---|
AU2022333521A1 (en) | 2024-03-14 |
AU2021221505A1 (en) | 2023-03-16 |
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