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WO1993005330A1 - Dispositif de protection pour raccord a bride - Google Patents

Dispositif de protection pour raccord a bride Download PDF

Info

Publication number
WO1993005330A1
WO1993005330A1 PCT/GB1991/001550 GB9101550W WO9305330A1 WO 1993005330 A1 WO1993005330 A1 WO 1993005330A1 GB 9101550 W GB9101550 W GB 9101550W WO 9305330 A1 WO9305330 A1 WO 9305330A1
Authority
WO
WIPO (PCT)
Prior art keywords
shield
flange
plastics material
axle
split
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.)
Ceased
Application number
PCT/GB1991/001550
Other languages
English (en)
Inventor
Seamus Quinn
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.)
ACE INDUSTRIAL PLASTICS Ltd
Original Assignee
ACE INDUSTRIAL PLASTICS 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 ACE INDUSTRIAL PLASTICS Ltd filed Critical ACE INDUSTRIAL PLASTICS Ltd
Priority to PCT/GB1991/001550 priority Critical patent/WO1993005330A1/fr
Publication of WO1993005330A1 publication Critical patent/WO1993005330A1/fr
Anticipated expiration legal-status Critical
Ceased 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
    • F16P—SAFETY DEVICES IN GENERAL; SAFETY DEVICES FOR PRESSES
    • F16P1/00—Safety devices independent of the control and operation of any machine
    • F16P1/02—Fixed screens or hoods
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q13/00—Equipment for use with tools or cutters when not in operation, e.g. protectors for storage
    • 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
    • F16L23/00—Flanged joints
    • F16L23/003—Auxiliary 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
    • F16L23/00—Flanged joints
    • F16L23/16—Flanged joints characterised by the sealing means
    • F16L23/167—Flanged joints characterised by the sealing means in connection with the appearance or detection of leaks
    • 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
    • F16L2201/00—Special arrangements for pipe couplings
    • F16L2201/30—Detecting leaks

Definitions

  • This invention relates to flange shields and in particular relates to shields for flanged joints on pipe lines carrying corrosive or dangerous fluids.
  • a flange joint is commonly used.
  • flanges surrounding the ends of each pipe to be joined are bolted together to effect the join, usually with a gasket placed between the two to prevent leakage of the fluid to be carried.
  • Many pipe lines carry dangerous fluids such as alkalis or acids, often under pressure. Should a flange gasket fail then a high pressure spray of corrosive material may ensue with consequent danger to personnel and machinery in the vicinity.
  • flange shields which fall into two main categories.
  • One is a strip of inert material, e.g.
  • plastics material which is bent around the flange joint and affixed into a circular shape by clips, rivets, studs or the like.
  • Another proposal uses a flexible plastics material coated cloth which is wrapped round the joint and affixed with draw-strings.
  • a flange shield dimensioned so as to cover a desired flange joint characterised in that it is formed in two halves hingedly attached to one another in one area and adapted to be fixed together at an opposite area.
  • the flange shield of the invention may have the general appearance of a wide wheel and axle and we can therefore define axial, radial and circumferential directions.
  • the flange shield will be split in a radial plane passing through the axis, and the hinge will be located at one of the points where the split plane passes through the circumference, the parts adapted to be fixed together being located at the opposite position where the " radial plane passes through the circumference.
  • the shield can be hinged open, brought to a flange joint, closed about the joint, and secured very simply and easily.
  • the product can be moulded from a plastics material it can be produced less expensively than with conventional materials.
  • the device is vaccuum formed in moulds, and it can be formed from a variety of plastics materials.
  • plastics materials include pvc, polyolefins, nylon, PTFE, and the like.
  • flange shield from polypropylene.
  • FIG. 1 there is an elevational view of a shield in accordance with the invention in place on a flange joint;
  • Figure 2 is a side view of the joint when split; and Figure 3 is a plan view of the shield corresponding to Figure 2.
  • a flange shield generally designated 10 having a generally wheel-shaped profile is formed in two halves 12, 14 hingedly attached together at 16.
  • the two halves 12, 14 may be produced by vaccuum forming in moulds from a suitable material such as polypropylene.
  • the hinge may be produced at the same time and indeed the shield is preferably produced integrally.
  • the two portions 12, 14 when joined together define a central disc shaped portion 18 which surrounds the flanges 20 of a flange joint 22 on a pipeline 24 in use.
  • the shield 10 In order that the shield 10 will fit a variety of pipe diameters it is constructed with "axle" portions 26 which are stepped.
  • Each axle portion 26 may be cut (usually by means of a hacksaw) at any of the points A, B, C or D to give four available diameters of opening for the pipeline 24. As illustrated in Figure 1 the cut would be made at position D but for a pipeline of smaller diameter one of the other points would be selected.
  • the shield is formed in two halves split about a radial plane passing through the longitudinal axis of the device 28.
  • the hinge 16 is formed at one portion where the split crosses the circumference of the disc portion 18.
  • the circumference means 30 is provided to enable the opposite edges to be affixed together.
  • the means 30 comprises a tongue and detent arrangement whereby the two opposite edges are a "snap fit".
  • clips, bolts or the like may be employed.
  • Use of the flange shield invention is simple. For a given diameter of pipeline all the flange shields can be cut at the relevant point A, B, C, or D to provide an opening of the correct diameter.
  • the operative then takes one shield to each flange joint 22 places it round the joint and snap fits the two halves 12, 14, together by means of the fixing arrangement 30.
  • the joint is then surrounded and a failure of the gasket (not shown in the drawings) would not allow corrosive fluid to spray beyond the flange shield 10.
  • the shield 10 is not meant to be a complete protection against escaping fluid, but merely to prevent fluid spraying from the joint. Seepage of the fluid from the flange shield can be observed by a maintenance check and the problem rectified.
  • part or all of the shield of the invention can be made transparent to aid inspection of the joint.
  • the flange shield of the invention provides a simple, economical and easy to use way of preventing spray from leaking flange joints.

Landscapes

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

Abstract

Un dispositif de protection (10) destiné à recouvrir un raccord à bride (22) est composé d'un matériau en plastique comportant deux moitiés (12, 14) fixées l'une à l'autre de façon articulée au niveau d'une région (16) et conçues pour être fixées ensemble au niveau d'une région opposée (30). Le dispositif de protection (10) présente de préférence l'aspect général d'une large roue à essieu, et les parties formant l'essieu (26) peuvent être échelonnées afin de présenter plusieurs diamètres. En coupant une des parties échelonnées au niveau d'un point précis, l'on obtient des ouvertures de différents diamètres qui peuvent être adaptées à différents diamètres de tuyaux.
PCT/GB1991/001550 1991-09-11 1991-09-11 Dispositif de protection pour raccord a bride Ceased WO1993005330A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/GB1991/001550 WO1993005330A1 (fr) 1991-09-11 1991-09-11 Dispositif de protection pour raccord a bride

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/GB1991/001550 WO1993005330A1 (fr) 1991-09-11 1991-09-11 Dispositif de protection pour raccord a bride

Publications (1)

Publication Number Publication Date
WO1993005330A1 true WO1993005330A1 (fr) 1993-03-18

Family

ID=10688937

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1991/001550 Ceased WO1993005330A1 (fr) 1991-09-11 1991-09-11 Dispositif de protection pour raccord a bride

Country Status (1)

Country Link
WO (1) WO1993005330A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1427961A4 (fr) * 2001-08-30 2004-12-29 Flangeware Pty Ltd Dispositif pour visite de securite des jonctions de tuyauterie
AU2002325643B2 (en) * 2001-08-30 2007-09-06 Flangeware Pty Ltd Pipe joint safety inspection device
ITUB20155833A1 (it) * 2015-11-03 2017-05-03 Romolo Baroni Dispositivo di raccolta delle acque piovane da introdurre in un foro circolare praticato nel pluviale.
FR3067441A1 (fr) * 2017-06-12 2018-12-14 Airbus Operations (S.A.S.) Dispositif de protection contre les fuites d'un raccordement d'une canalisation

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2699960A (en) * 1951-10-10 1955-01-18 George L Callery Casing for collecting leakage from a pipe coupling
WO1982002582A1 (fr) * 1981-01-28 1982-08-05 Plastics Inc Bunnell Bouclier de securite pour raccordements de tuyaux a brides
US4541256A (en) * 1983-01-31 1985-09-17 John Green Flange lock

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2699960A (en) * 1951-10-10 1955-01-18 George L Callery Casing for collecting leakage from a pipe coupling
WO1982002582A1 (fr) * 1981-01-28 1982-08-05 Plastics Inc Bunnell Bouclier de securite pour raccordements de tuyaux a brides
US4541256A (en) * 1983-01-31 1985-09-17 John Green Flange lock

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1427961A4 (fr) * 2001-08-30 2004-12-29 Flangeware Pty Ltd Dispositif pour visite de securite des jonctions de tuyauterie
AU2002325643B2 (en) * 2001-08-30 2007-09-06 Flangeware Pty Ltd Pipe joint safety inspection device
ITUB20155833A1 (it) * 2015-11-03 2017-05-03 Romolo Baroni Dispositivo di raccolta delle acque piovane da introdurre in un foro circolare praticato nel pluviale.
FR3067441A1 (fr) * 2017-06-12 2018-12-14 Airbus Operations (S.A.S.) Dispositif de protection contre les fuites d'un raccordement d'une canalisation

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