GB2515126A - Pipe Insert - Google Patents

Pipe Insert Download PDF

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Publication number
GB2515126A
GB2515126A GB1313371.5A GB201313371A GB2515126A GB 2515126 A GB2515126 A GB 2515126A GB 201313371 A GB201313371 A GB 201313371A GB 2515126 A GB2515126 A GB 2515126A
Authority
GB
United Kingdom
Prior art keywords
insert
pipe
head portion
groove
barrel portion
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.)
Granted
Application number
GB1313371.5A
Other versions
GB201313371D0 (en
GB2515126B (en
Inventor
Keith Millward
Darren Cockayne
Carol Dalton
Simon Colgate
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.)
Polypipe Ltd
Original Assignee
Polypipe Ltd
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 Polypipe Ltd filed Critical Polypipe Ltd
Priority to GB1313371.5A priority Critical patent/GB2515126B/en
Publication of GB201313371D0 publication Critical patent/GB201313371D0/en
Publication of GB2515126A publication Critical patent/GB2515126A/en
Application granted granted Critical
Publication of GB2515126B publication Critical patent/GB2515126B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • F16L21/00—Joints with sleeve or socket
    • F16L21/02—Joints with sleeve or socket with elastic sealing rings between pipe and sleeve or between pipe and socket, e.g. with rolling or other prefabricated profiled 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
    • F16L21/00—Joints with sleeve or socket
    • F16L21/02—Joints with sleeve or socket with elastic sealing rings between pipe and sleeve or between pipe and socket, e.g. with rolling or other prefabricated profiled rings
    • F16L21/035—Joints with sleeve or socket with elastic sealing rings between pipe and sleeve or between pipe and socket, e.g. with rolling or other prefabricated profiled rings placed around the spigot end before connection
    • 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
    • F16L25/00—Constructive types of pipe joints not provided for in groups F16L13/00 - F16L23/00 ; Details of pipe joints not otherwise provided for, e.g. electrically conducting or insulating means
    • F16L25/14—Joints for pipes of different diameters or cross-section
    • 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
    • F16L35/00—Special arrangements used in connection with end fittings of hoses, e.g. safety or protecting 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
    • 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

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Joints With Sleeves (AREA)

Abstract

A pipe insert 10 (also referred to as a sealed stiffener) comprising a body 12, which defines a fluid flow path, with a barrel portion 20 at one end and a head portion 34 at the other end. The barrel portion is inserted into the free end of a pipe. The barrel portion is provided with a circumferential seal 22 in a groove 24, preferably this is an O-ring seal, for sealing cooperation with the inside of the pipe. The head portion projects from the free end of the pipe and has a larger outer diameter than the barrel portion. This larger diameter produces a stop 42 which stops the pipe sleeving any further onto the pipe insert. The head portion is also provided with a circumferential seal 36 which cooperates with the inside of a pipe connector socket. Seal 36 is also preferably an O-ring and the groove 38 forms flanges 50 and 52. Preferably flange 50 has an angled surface 46 tapering towards the barrel portion to aid in removing the pipe insert from the pipe connector socket.

Description

Pipe insert
Field of Invention
The present invention relates to an insert for a pipe, e.g. of the kind commonly referred to as a pipe stiffener.
Background
Inserts for use in stiffening the free end of a pipe are known. Such inserts typically define an elongate body having a bard portion intended to be positioned in the free end of a pipe and a head portion intended to limit the extent of insertion of the insert into the pipe. Once the insert has been fitted in the free end of a pipe, the free end of the pipe can be inserted into the socket of a pipe connector.
It is known to provide a seal, e.g. an 0-ring, on the balTel portion, for providing a watertight seal between the insert and the inner wall of the pipe. It is also known to provide a seal on the head portion, for providing a watertight seal between the insert and the connector or socket into which the free end of the pipe may be inserted. Stiffeners configured in this way are often refelTed to as sealed stiffeners'.
The sealing performance of such stiffeners is critical to avoiding problems caused by water eakage. e.g. between the insert and the pipe and/or between the insert and the socket, sometimes encountered on site as a result of a user damaging the suiface of the pipe.
An object of the invention is to provide a pipe insert of the sealed stiffener' type with improved sealing performance.
Summary of the invention
According to a first aspect of the invention, there is provided an insert for a pipe as set forth in claim I. This configuration of the insert has been found to provide advantageous performance in terms of stiffening and sealing when the insert is used as a pipe stiffener.
According to another aspect of the invention, there is provided a pipe connector assembly comprising: a pipe having a free end; an insert in accordance with the first aspect of the invention fitted in the free end of the pipe; a pipe connector having a pipe socket, wherein the free end of the pipe with the insert fitted therein is received in the socket, the pipe socket including an internal region in which the free end of the pipe and the insert are located; wherein the insert provides a seal between the pipe and a wall of said internal region within the socket.
According to a further aspect of the invention, there is provided an insert for a pipe, the insert comprising: a body with first and second ends and defining a flow path extending between the first and second ends, for allowing fluid to flow along a longitudinal axis of the insert, wherein the body defines a barrel portion for insertion into the free end of a pipe, with a circumferential seal provided in a groove on the barrel portion. for sealing cooperation with the inside of a pipe, and wherein the body further defines a head portion intended to project from the free end of a pipe, the head portion having an outer diameter greater than the outer diameter of the barrel portion and including a circumferential seal provided in a groove on the head portion, for sealing cooperation with the inside of a pipe connector socket; wherein the groove on the barrel portion creates a constriction of the flow path immediately beneath the location of the seal; andlor wherein the head portion defines a radial surface, orthogonal to an outer surface of the barrel portion, which is intended to serve as a stop for limiting the degree of insertion of the insert into a pipe, and wherein the head portion includes a chamfer or angled surface extending between the radial surface and an outer diameter wall of the head portion; and/or wherein the seal on the head portion is located between first and second flanges forming part of the head portion, wherein each flange includes an axial wall which defines the maximum outer diameter of the head portion, and wherein the flange distal the second end of the insert includes an angled surface defining a slope extending down to a radial surface extending orthogonal to an outer surface of the barrel portion; andlor wherein the barrel portion defines a radius section at the first end of the insert, and wherein the axial length of the radius section is less than the width of the groove on the barrel portion; andlor wherein the head portion defines a radius section at the second end of the insert, and wherein the axial length of the radius section is no greater than the width of the groove on the head portion.
Description of drawings
Embodiment(s) of the invention will now be described with reference to Figure 1, which shows a sectional view of a pipe insert.
Detailed description
A pipe insert is indicated at 10 in Figure 1. The insert 10 has a unitary body 12 with first and second ends 14, 16. The body 12 defines a flow path 18 extending between the first and second ends 14, 16, for allowing fluid to flow along a longitudinal axis X of the insert 10.
The body 12 defines a balTel portion 20 for insertion into the free end of a pipe. A circumferential seal 22, in this embodiment an 0-ring, is provided on the barrel portion 20, for sealing cooperation with the inside of a pipe. More particularly, the seal 22 is mounted in a groove 24 formed in the barrel portion 20.
The body 12 further defines a head portion 34 intended to project from the free end of a pipe, i.e. when the barrel portion 20 of the insert 10 is fitted inside the free end of the pipe. The head portion 34 has an outer diameter greater than the outer diameter of the barrel portion 20.
A circumferential seal 36, in this embodiment an 0-ring, is provided on the head portion 34, for sealing cooperation with the inside of a pipe connector socket. More particularly, the seal 36 is mounted in a groove 38 formed in the head portion 34.
The head portion 34 defines a radially extending surface 42, orthogonal to the outer surface 44 of the barrel portion 20, which is intended to serve as a stop for limiting the degree of insertion of the insert into a pipe. Immediately behind the radial surface 42 (to the right as viewed in Figure 1), the head portion 34 includes a chamfer or angled surface 46 extending to an outer diameter wall 48 of the head portion 34. Put another way, the seal 36 is located between first and second flanges 50, 52 forming part of the head portion. Each flange 50, 52 includes an axial wall 48, 54 which defines the maximum outer diameter of the head portion 34, wherein the flange 50 includes an ang'ed surface 46 defining a taper or slope extending down to radial surface 42. In other embodiments, lO the surface 46 may be curved or define a radius.
The advantage of the surface 46 is that it allows easier dernounting should the pipe need to be removed from a pipe connector. If this region of the insert defined a square or wholly flat-backed portion (as is common in the art), this region of the insert 10 would have a tendency to snag or wedge against internal washers/seals/collets of the pipe connector. This may result in the pipe connector and/or insert being damaged and incapable of re-use. The use of an angled or chamfered surface (e.g. defining a slope or taper on the head portion) has been found to provide optimum removal characteristics.
The axial length of the flange 50 is greater than the width w of the groove 38 and the axial length of the flange 52.
Tests indicate that the relative portions of the barrel portion 20 and the head portion 34.
and also the ocation of the groove 24 on the barrd portion 20, may contribute to improved sealing performance when the insert is used as a sealed stiffener.
As can be seen from Figure 1, the axial length of the head portion 34 is less than the distance between the first end 14 of the insert 10 and the centre point of the groove 24 on the barrel portion 20. Moreover, the groove 24 (in particular the centre point of the groove 24, with respect to the longitudinal axis of the insert 10) is provided at a location substantially less than 40%, more particularly less than approximately 33%, of the length of the balTel portion 20, when measured from the first end 14 of the insert. Indeed, in the illustrated embodiment, the centre point of the groove 24 (with respect to the longitudinal axis of the insert 10) is provided at a location approximately 3 tenths of the length of the barrel portion 20 (measured from the first end 14 of the insert). Hence, the seal 22 on the barrel portion 20 is arranged substantially closer to the first end 14 of the insert 10 than to the head portion 34 of the insert 10.
As can be seen from Figure 1, the provision of the groove 24 on the barrel portion 20 creates a constriction of the flow path 18, i.e. within the bore of the ban-el portion 20, immediately beneath the location of the seal 22. The constriction defines opposing steps 26, 28 projecting radially inwardly of the internal surface 30 of the flow path 18.
The provision of a constriction, and more particularly a stepped constriction, within the flow path of the barrel portion, would commonly be assumed to be problematic, e.g. creating turbulence within fluid flowing through the insert. Certainly, such a configuration is more difficult to produce. However, tests indicate that this feature of the configuration may contribute to improvements in overall stiffening' performance when the insert is used as a sealed stiffener in the free end of a pipe located within the socket of a pipe connector.
The barrel portion 20 defines a radius section 32 at the first end 14 of the insert 10. The axial length of the radius section 32 is less than the width W of the groove 24. The configuration of the radius section 32 contributes to improvements when inserting the insert into the free end of a pipe.
As can be seen, the head portion 34 defines a radius section 40 at the second end 16 of the insert 10. The axial length of the radius section 40 is no greater than, and in this embodiment less than, the width w of the groove 38 on the head portion 34. The configuration of the radius section 40 contributes to improvements when inserting the pipe and insert into the socket of a pipe connector.
In exemplary embodiments, the insert 10 will be produced using Polysulphone IPSu), Glass filled Polybutylene, Polybutylene, Polyphenylsulphone (PPSU), PVDF, stainless steel or brass. 0-rings would generally be made from EPDM.
The width W of the groove 24 on the barrel portion is greater than the width w of the groove 38 on the head portion 34.
Tests indicate that the configuration of the insert shown in Figure 1 leads to improved performance, in terms of both sealing effects in use as a sealed stiffener, and in terms of its ease of insertion into a pipe and socket on a pipe connector.

Claims (12)

  1. Claims 1. An insert for a pipe, the insert comprising: a body with first and second ends and defining a flow path extending between the first and second ends, for allowing fluid to flow along a longitudinal axis of the insert.wherein the body defines a barrel portion for insertion into the free end of a pipe, with a circumferential seal provided in a groove on the barrel portion, for sealing cooperation with the inside of a pipe. and wherein the body further defines a head portion intended to project from the free end of a pipe, the head portion having an outer diameter greater than lO the outer diameter of the barrel portion and including a circumferentiai seal provided in a groove on the head portion, for sealing cooperation with the inside of a pipe connector socket; further wherein the axial length of the head portion is less than the distance between the first end of the insert and a centre point of the groove on the barrel portion, the groove iS on the balTel portion is provided at a location substantially less than 40% of the length of the barrel portion from the first end of the insert.
  2. 2. An insert according to claim 1 wherein the centre point of the groove on the barrel portion is provided at a location less than approximately 33% of the length of the barrel portion from the first end of the insert.
  3. 3. An insert according to claim i or claim 2 wherein the centre point of the groove on the barrel portion is provided at a location approximately in the region of 3 tenths of the length of the barrel portion from the first end of the insert.
  4. 4. An insert according to any of claims 1 to 3 wherein the groove on the barrel portion creates a constriction of the flow path immediately beneath the location of the seal.
  5. 5. An insert according to claim 4 wherein said constriction of the flow path defines opposing steps projecting radially inwardly of the internal surface of the flow path.
  6. 6. An insert according to any preceding claim wherein the head portion defines a radial surface, orthogonal to an outer surface of the barrel portion, which is intended to serve as a stop for limiting the degree of insertion of the insert into a pipe, and wherein the head portion includes a chamfer or angled surface extending between the radial surface and an outer diameter wall of the head portion.
  7. 7. An insert according to any preceding claim wherein the seal on the head portion is located between first and second flanges forming part of the head portion, wherein each flange includes an axial wall which defines the maximum outer diameter of the head portion, and wherein the flange distal the second end of the insert includes an angled surface defining a slope extending down to a radial surface extending orthogonal to an outer surface of the barrel portion.
  8. 8. An insert according to claim 7 wherein the axial length of the flange distal the second end of the insert is greater than the width of the groove on the barrel and/or greater than the axial length of the other of said flanges.
  9. 9. An insert according to any preceding claim wherein the barrel portion defines a radius section at the first end of the insert, and wherein the axial length of the radius section is tess than the width of the groove on the bard portion.
  10. 10. An insert according to any preceding claim wherein the head portion defines a radius section at the second end of the insert, and wherein the axial length of the radius section is no greater than the width of the groove on the head portion.
  11. 11. An insert according to claim 10 wherein the axial length of the radius section is less than the width of the groove on the head portion.
  12. 12. An insert substantially as herein before descilbed with reference to and/or as shown in Figure 1.
GB1313371.5A 2013-07-26 2013-07-26 Pipe Insert Active GB2515126B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1313371.5A GB2515126B (en) 2013-07-26 2013-07-26 Pipe Insert

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1313371.5A GB2515126B (en) 2013-07-26 2013-07-26 Pipe Insert

Publications (3)

Publication Number Publication Date
GB201313371D0 GB201313371D0 (en) 2013-09-11
GB2515126A true GB2515126A (en) 2014-12-17
GB2515126B GB2515126B (en) 2015-11-25

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Family Applications (1)

Application Number Title Priority Date Filing Date
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017127147A1 (en) * 2016-01-19 2017-07-27 St. Jude Medical, Cardiology Division, Inc. Atraumatic coupling and catheter employing the same
WO2019101473A1 (en) * 2017-11-23 2019-05-31 Pierburg Gmbh Sleeve for a fluid valve and fluid valve through which fluid can flow axially

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2374392A (en) * 1997-07-14 2002-10-16 Luk Getriebe Systeme Gmbh Variable speed transmission with valve controlling supply of fluid to cooling means
GB2469640A (en) * 2009-04-20 2010-10-27 Polypipe Building Products Ltd Pipe stiffener
US20120161436A1 (en) * 2010-12-23 2012-06-28 La Casa Angela Holding Limited Adaptor and pipe connector using the same

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2829828B1 (en) * 2001-09-14 2006-01-27 Comap Abbeville CRIMPING FITTING FOR DEFORMABLE TUBE OF SYNTHETIC, MULTI-LAYER OR METALLIC MATERIAL

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2374392A (en) * 1997-07-14 2002-10-16 Luk Getriebe Systeme Gmbh Variable speed transmission with valve controlling supply of fluid to cooling means
GB2469640A (en) * 2009-04-20 2010-10-27 Polypipe Building Products Ltd Pipe stiffener
US20120161436A1 (en) * 2010-12-23 2012-06-28 La Casa Angela Holding Limited Adaptor and pipe connector using the same

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017127147A1 (en) * 2016-01-19 2017-07-27 St. Jude Medical, Cardiology Division, Inc. Atraumatic coupling and catheter employing the same
CN108463265A (en) * 2016-01-19 2018-08-28 圣犹达医疗用品心脏病学部门有限公司 Not damaged connector and the conduit for using the not damaged connector
US10779741B2 (en) 2016-01-19 2020-09-22 St. Jude Medical, Cardiology Division, Inc. Atraumatic coupling and catheter employing the same
US10952629B2 (en) 2016-01-19 2021-03-23 St. Jude Medical, Cardiology Division, Inc. Atraumatic coupling and catheter employing the same
WO2019101473A1 (en) * 2017-11-23 2019-05-31 Pierburg Gmbh Sleeve for a fluid valve and fluid valve through which fluid can flow axially

Also Published As

Publication number Publication date
GB201313371D0 (en) 2013-09-11
GB2515126B (en) 2015-11-25

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PCNP Patent ceased through non-payment of renewal fee

Effective date: 20170726

S28 Restoration of ceased patents (sect. 28/pat. act 1977)

Free format text: APPLICATION FILED

S28 Restoration of ceased patents (sect. 28/pat. act 1977)

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Effective date: 20190425