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WO1998030829A1 - A protector for the end of a non-threaded pipe - Google Patents

A protector for the end of a non-threaded pipe Download PDF

Info

Publication number
WO1998030829A1
WO1998030829A1 PCT/GB1998/000043 GB9800043W WO9830829A1 WO 1998030829 A1 WO1998030829 A1 WO 1998030829A1 GB 9800043 W GB9800043 W GB 9800043W WO 9830829 A1 WO9830829 A1 WO 9830829A1
Authority
WO
WIPO (PCT)
Prior art keywords
protector
pipe
skirt
section
end section
Prior art date
Application number
PCT/GB1998/000043
Other languages
French (fr)
Inventor
James Francis Hynes
Original Assignee
Drilltec Patents & Technologies Company, Inc.
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 Drilltec Patents & Technologies Company, Inc. filed Critical Drilltec Patents & Technologies Company, Inc.
Priority to AU54916/98A priority Critical patent/AU5491698A/en
Publication of WO1998030829A1 publication Critical patent/WO1998030829A1/en

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
    • F16L57/00—Protection of pipes or objects of similar shape against external or internal damage or wear
    • F16L57/005—Protection of pipes or objects of similar shape against external or internal damage or wear specially adapted for the ends of pipes
    • 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
    • F16L55/10—Means for stopping flow in pipes or hoses
    • F16L55/11—Plugs
    • F16L55/1141—Plugs the plug being made of elastic material

Definitions

  • the present invention relates to protectors for the end of threaded or non-threaded pipes.
  • the skirt is preferably at an angle of 93° to 95° to the flange.
  • one or more ventilation holes are provided in the end section.
  • the ventilation holes are preferably formed in the base of the cup-shaped section.
  • the protector In operation the protector is pressed over the end of the pipe with the skirt disposed around the outside of the pipe with the cup-shaped member, when present, disposed inside the pipe.
  • the projection or series of projections presses against the external surface of the pipe to form a friction fit, with the outside of the pipe.
  • the projection is positioned and sized in order to co-operate with the groove to retain the protector in position.
  • a single projection is provided extending around the inner surface of the skirt of the protector.
  • the protector may easily be fitted to the pipe for protection and then removed from the pipe when the pipe sections are ready to be connected together.
  • the end section of the protector prevents dirt and other foreign bodies from entering the pipe sections during transport and storage.
  • the end section includes a cup-shaped section this has the added advantage of including the pipe sections to be picked up easily for movement, even though the end is closed by the protector.
  • the protector of the present invention not only protects the external curved surface of the pipe but also protects the end surface of the pipe and prevents foreign matter from entering the pipe sections.
  • the protector of the present invention may be used in connection with any type or size of piping, especially piping which is stored and transported in sections ready for connection to form a single pipeline.
  • the protectors may be used in connection with pipes which are of the order of 6 5 / g " in diameter and which are used to carry fuel to forward airbases, or it may be used in connection with much larger pipes which are used in oil field installations. It may also be used in connection with smaller pipes e.g. 4" diameter pipes.
  • the pipe section includes an annular recess 14 in the outer surface 16 of the pipe section.
  • the protector comprises a cup-shaped portion 18 including a base 20 and an inclined, preferably frusto conical wall 22. At the end of the side wall 22 opposite to the base 20 there is provided a flange 24.
  • the flange 24 extends outwardly from the wall 22 and a skirt 26 extends from the outer edge of the flange 24.
  • the skirt 26 can be seen to extend around the surface of the pipe section 10 and is slightly angled away from the wall 22.
  • the skirt is inclined outwardly at an angle of 93° to 95° to the flange 24.
  • An annular projection 28 is formed in the inner surface of the skirt 26 and co-operates with the recess 14 formed in the outer surface 16 of the pipe section.
  • the protector is mounted over the end of the pipe by placing the cup- shaped portion 18 within the pipe and springing the skirt 26 over the external surface of the pipe 10 until the projection 28 engages with the recess 14. If desired the projection 28 may be replaced by a series of projections around the inner surface of the skirt 26.
  • the protector shown in the drawing is made from polyethylene or polycarbonate and is vacuum formed.
  • the skirt portion is arranged so as to flex slightly with respect to the remainder of the protector.
  • the protector is merely pressed into place so that the projection 28 forms a friction fit with the external surface 16 of the pipe section.
  • the skirt 26 In order to disengage the protector from the pipe (whether or not the pipe has a recess) the skirt 26 is flexed slightly outwardly to allow the protector to be slid off the end of the pipe.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Protection Of Pipes Against Damage, Friction, And Corrosion (AREA)

Abstract

There is disclosed a protector (12) for the end of a threaded or non-threaded pipe (10) which comprises an end section (18), a skirt section (26) extending from the outer edge of the end section (20) and arranged in operation to extend around the outer surface of the pipe (10), said skirt (26) being angled outwardly from the end section (18) and being arranged to flex slightly with respect to said end section (18), and a projection (28) or series of projections provided on the internal surface of the skirt (26) to co-operate, when in use, with the external surface of the pipe (10).

Description

DESCRIPTION
A PROTECTOR FOR THE END OF A NON-THREADED PIPE
The present invention relates to protectors for the end of threaded or non-threaded pipes.
Pipes which are transported in sections and then connected together either by threaded end sections (threaded pipes) or by other means (non- threaded pipes), to form a pipeline, e.g. for carrying fuel to forward air bases in times of war, require that the ends of the sections be protected during transport and storage in order that, on assembly, the ends of the pipes fit together accurately to prevent leakage. Current methods of protection for non- threaded pipes involve two hemi-tubular members which when placed together form a short tubular section of an internal diameter to fit in close proximity to the external diameter of the end of the tubing. A fastening member, e.g. in the form of a wire, is provided to hold the two hemi-tubular parts together around the end of the tube. An extra member, e.g. a piece of cloth is then used to cover the end of the short tubular member in order to prevent dirt and the like from entering the pipe. The extra member is preferably held in place by the fastening member.
Such arrangement however suffers from the disadvantage that because the arrangement is in a number of parts, it is easy for one or more of these parts to be lost. In addition, it is difficult to achieve an arrangement in which the tubular member fits closely over the end of the pipe so as not to come off during transport and storage of the pipe, but is not so close fitting as to damage the end of the pipe.
According to the present invention there is provided a protector for the end of a threaded or non-threaded pipe which comprises an end section, a skirt section extending from the outer edge of the end section and arranged in operation to extend around the outer surface of the pipe, said skirt being angled outwardly from the end piece and being arranged to flex slightly with respect to said end piece, and a projection or series of projections provided on the internal surface of the skirt to co-operate, when in use, with the external surface of the pipe.
Preferably the end section comprises an approximately cup-shaped section sized to fit inside the end of the pipe, a flange extending around the open end of the cup-shaped section and extending outwardly therefrom, said skirt extending from the outward edge of said flange.
The skirt is preferably at an angle of 93° to 95° to the flange.
The protector of the invention is particularly suitable for use in connection with pipes having non-threaded ends but may be used with pipes having threaded ends.
Preferably this protector is formed as a single piece and is preferably made from a plastic material. Any suitable plastics material may be used, including polyethylene or polycarbonate. Aluminium might also be used to manufacture the protector. When the protector is made from plastics material, it is preferably vacuum formed, although it may also be manufactured by other methods e.g. injection moulding or rotational moulding. A series of axial ridges may be provided in the sides of the cup-shaped
section when present in order to increase strength of the protector.
In preferred embodiments, one or more ventilation holes are provided in the end section. When the end section includes a cup-shaped section, the ventilation holes are preferably formed in the base of the cup-shaped section.
In operation the protector is pressed over the end of the pipe with the skirt disposed around the outside of the pipe with the cup-shaped member, when present, disposed inside the pipe. The projection or series of projections presses against the external surface of the pipe to form a friction fit, with the outside of the pipe. In some pipes, there is provided an annular groove around the external surface of the pipe near the end. This groove is used to assist in
connecting one section of pipe to the next. Where the protector of the present invention is to be used in connection with such pipes, the projection is positioned and sized in order to co-operate with the groove to retain the protector in position. Preferably a single projection is provided extending around the inner surface of the skirt of the protector.
By virtue of the flexibility of the skirt portion of the protector, the pipe
protector may easily be fitted to the pipe for protection and then removed from the pipe when the pipe sections are ready to be connected together. The end section of the protector prevents dirt and other foreign bodies from entering the pipe sections during transport and storage. When the end section includes a cup-shaped section this has the added advantage of including the pipe sections to be picked up easily for movement, even though the end is closed by the protector.
It can be seen that the protector of the present invention not only protects the external curved surface of the pipe but also protects the end surface of the pipe and prevents foreign matter from entering the pipe sections.
The protector of the present invention may be used in connection with any type or size of piping, especially piping which is stored and transported in sections ready for connection to form a single pipeline. For example, the protectors may be used in connection with pipes which are of the order of 65/g" in diameter and which are used to carry fuel to forward airbases, or it may be used in connection with much larger pipes which are used in oil field installations. It may also be used in connection with smaller pipes e.g. 4" diameter pipes.
The invention will now be further described by way of example with reference to the accompanying drawing which is a cross-sectional view of a protector in accordance with the invention mounted on a pipe section.
Referring now to the drawing, there is shown a non- threaded pipe section 10 to which is mounted a protector 12. The pipe section includes an annular recess 14 in the outer surface 16 of the pipe section.
The protector comprises a cup-shaped portion 18 including a base 20 and an inclined, preferably frusto conical wall 22. At the end of the side wall 22 opposite to the base 20 there is provided a flange 24. The flange 24 extends outwardly from the wall 22 and a skirt 26 extends from the outer edge of the flange 24. The skirt 26 can be seen to extend around the surface of the pipe section 10 and is slightly angled away from the wall 22. The skirt is inclined outwardly at an angle of 93° to 95° to the flange 24. An annular projection 28 is formed in the inner surface of the skirt 26 and co-operates with the recess 14 formed in the outer surface 16 of the pipe section. In operation the protector is mounted over the end of the pipe by placing the cup- shaped portion 18 within the pipe and springing the skirt 26 over the external surface of the pipe 10 until the projection 28 engages with the recess 14. If desired the projection 28 may be replaced by a series of projections around the inner surface of the skirt 26.
The protector shown in the drawing is made from polyethylene or polycarbonate and is vacuum formed. The skirt portion is arranged so as to flex slightly with respect to the remainder of the protector.
If used in connection with a pipe not having an annular groove 14 the protector is merely pressed into place so that the projection 28 forms a friction fit with the external surface 16 of the pipe section.
In order to disengage the protector from the pipe (whether or not the pipe has a recess) the skirt 26 is flexed slightly outwardly to allow the protector to be slid off the end of the pipe.

Claims

1. A protector for the end of a threaded or non-threaded pipe which comprises an end section, a skirt section extending from the outer edge of the
end section and arranged in operation to extend around the outer surface of the pipe, said skirt being angled outwardly from the end section and being
arranged to flex slightly with respect to said end section, and a projection or series of projections provided on the internal surface of the skirt to co-operate, when in use, with the external surface of the pipe.
2. A protector as claimed in claim 1, in which the end section comprises an approximately cup-shaped section sized to fit inside the end of the pipe, a flange extending around the open end of the cup-shaped section and
extending outwardly therefrom, said skirt extending from the outward edge of said flange.
3. A protector as claimed in claim 2, in which a series of axial ridges is provided in the sides of the cup-shaped section in order to increase strength
of the protector.
4. A protector as claimed in claim 1, 2 or 3, in which the skirt is at an
angle of 93° to 95° to the flange.
5. A protector as claimed in any one of the preceding claims for use in connection with pipes having non-threaded ends.
6. A protector as claimed in any one of the preceding claims which is
formed as a single piece.
7. A protector as claimed in any one of the preceding claims which is made from a plastics material or alumium.
8. A protector as claimed in any one of the preceding claims, in which one or more ventilation holes are provided in the end section.
9. A protector substantially as hereinbefore described with reference to and as illustrated in the accompanying drawings.
PCT/GB1998/000043 1997-01-09 1998-01-07 A protector for the end of a non-threaded pipe WO1998030829A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU54916/98A AU5491698A (en) 1997-01-09 1998-01-07 A protector for the end of a non-threaded pipe

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9700360A GB2321041A (en) 1997-01-09 1997-01-09 End cap for pipe
GB9700360.2 1997-01-09

Publications (1)

Publication Number Publication Date
WO1998030829A1 true WO1998030829A1 (en) 1998-07-16

Family

ID=10805731

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1998/000043 WO1998030829A1 (en) 1997-01-09 1998-01-07 A protector for the end of a non-threaded pipe

Country Status (3)

Country Link
AU (1) AU5491698A (en)
GB (1) GB2321041A (en)
WO (1) WO1998030829A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010129376A3 (en) * 2009-04-28 2011-03-03 Dane Madson Flange protector and method of use
US8590876B1 (en) 2009-12-16 2013-11-26 Dane Curtis Madson Object securing apparatus
KR20180065282A (en) * 2016-12-07 2018-06-18 삼성중공업 주식회사 Cover apparatus for protecting pipe

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29901962U1 (en) * 1999-02-05 1999-04-22 Böhm Kunststoffe GmbH, 95158 Kirchenlamitz Closure for pipes
FR2797026B1 (en) * 1999-07-30 2001-09-28 Legris Sa PROTECTIVE TIP FOR A TUBE END
US6696018B2 (en) * 2001-11-14 2004-02-24 Electron Process Company, Llc System and method for sterilization of biological connections
CA2692121C (en) 2006-06-19 2019-08-06 Craig Rothleitner Plug assembly
DE102011016736A1 (en) * 2011-04-11 2012-10-11 Veritas Ag Closing element for pipe socket
CN103075346B (en) * 2011-10-25 2016-06-29 乐金电子(天津)电器有限公司 The sealing cap that size diameter pipe is general
GB2589591B (en) * 2019-12-03 2023-08-23 Polypipe Ltd Pipe cap

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2740421A1 (en) * 1977-09-08 1979-03-22 Ekkehard Friedl Pipeline pipe machined end plastics protector - is plastics profile with embedded overlapping steel platelets facilitating curving
GB2028949A (en) * 1978-09-04 1980-03-12 Mercol Rubber Ltd Protectors for Screwthreads
DE3829070A1 (en) * 1988-08-25 1990-03-08 Mannesmann Ag Closure caps for plastic-coated steel pipes
DE4216125A1 (en) * 1992-05-15 1993-11-18 Knorr Bremse Ag Pneumatic cylinder with snap connection between cylinder tube and cover - has renewable sealing ring producing holding sealing force until destroyed in order to dismantle cylinder.

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB376004A (en) * 1931-07-01 1932-07-07 Wellington Tube Works Ltd A new or improved protective device for use with tubes
US2873765A (en) * 1957-02-27 1959-02-17 E A Polumbus Jr Thread protectors for well sucker-rods
US4033380A (en) * 1975-01-08 1977-07-05 Weber Richard C Thread protector
FR2632997A1 (en) * 1988-06-15 1989-12-22 Bc2Mn Ste Civile ADAPTABLE PROTECTIVE COIFFER ON HIGHLIGHTS WAITING ON CONSTRUCTION SITES
US5311776A (en) * 1993-04-12 1994-05-17 Rochester Gauges, Inc. Pre-installation liquid level gauge assembly with thread protector

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2740421A1 (en) * 1977-09-08 1979-03-22 Ekkehard Friedl Pipeline pipe machined end plastics protector - is plastics profile with embedded overlapping steel platelets facilitating curving
GB2028949A (en) * 1978-09-04 1980-03-12 Mercol Rubber Ltd Protectors for Screwthreads
DE3829070A1 (en) * 1988-08-25 1990-03-08 Mannesmann Ag Closure caps for plastic-coated steel pipes
DE4216125A1 (en) * 1992-05-15 1993-11-18 Knorr Bremse Ag Pneumatic cylinder with snap connection between cylinder tube and cover - has renewable sealing ring producing holding sealing force until destroyed in order to dismantle cylinder.

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010129376A3 (en) * 2009-04-28 2011-03-03 Dane Madson Flange protector and method of use
US8590876B1 (en) 2009-12-16 2013-11-26 Dane Curtis Madson Object securing apparatus
KR20180065282A (en) * 2016-12-07 2018-06-18 삼성중공업 주식회사 Cover apparatus for protecting pipe
KR101885274B1 (en) * 2016-12-07 2018-08-03 삼성중공업 주식회사 Cover apparatus for protecting pipe

Also Published As

Publication number Publication date
AU5491698A (en) 1998-08-03
GB2321041A (en) 1998-07-15
GB9700360D0 (en) 1997-02-26

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