GB2279418A - Flanged pipe component with valve in the flange - Google Patents

Flanged pipe component with valve in the flange Download PDF

Info

Publication number
GB2279418A
GB2279418A GB9312959A GB9312959A GB2279418A GB 2279418 A GB2279418 A GB 2279418A GB 9312959 A GB9312959 A GB 9312959A GB 9312959 A GB9312959 A GB 9312959A GB 2279418 A GB2279418 A GB 2279418A
Authority
GB
United Kingdom
Prior art keywords
component
flange
valve
flanged
enlarged
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.)
Withdrawn
Application number
GB9312959A
Other versions
GB9312959D0 (en
Inventor
Phillip Arthur Mcevoy
Adrian Cartwright
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.)
Scotech Ltd
Original Assignee
Scotech 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 Scotech Ltd filed Critical Scotech Ltd
Priority to GB9312959A priority Critical patent/GB2279418A/en
Publication of GB9312959D0 publication Critical patent/GB9312959D0/en
Publication of GB2279418A publication Critical patent/GB2279418A/en
Withdrawn legal-status Critical Current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
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L23/00—Flanged joints
    • 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
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K41/00—Spindle sealings
    • F16K41/02—Spindle sealings with stuffing-box ; Sealing rings
    • F16K41/023—Spindle sealings with stuffing-box ; Sealing rings for spindles which only rotate, i.e. non-rising spindles
    • F16K41/026—Spindle sealings with stuffing-box ; Sealing rings for spindles which only rotate, i.e. non-rising spindles for rotating valves
    • 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
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
    • F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
    • F16K5/0663—Packings
    • F16K5/0694—Spindle sealings

Abstract

A flanged component for use in pipework wherein the flange (2) is enlarged to an oversize thickness and provided with a recess to accommodate valve means (3) for acting on fluids passing through the component in use. <IMAGE>

Description

FLANGED COMPONENT This invention relates to installation of valves in pipe lines particularly for use in the petrochemical industry.
A typical arrangement is shown in Figure 1. This arrangement involves assembling a plurality of components which are welded or bolted as appropriate to provide a 3-piece welded branch having a flange at the upper end thereof to receive a correspondingly flanged component e.g. an isolation valve, which in turn may have a blanking flange or additional instrument or component mounted thereon. The provision of a plurality of flanged components on top of the flanged welded outlet components leads to the formation of the typical "Christmas tree" structure which is common in this field.
Due to the number of component parts used to make up the fitting, the down time required to install or dismantle the equipment and the number of personnel required is prohibitive.
It will be apparent that this type of fitting produces a large number of leakage points which reduce the effectiveness of the valve. Thus, where hazardous or environmentally damaging materials are being conducted through the structure the risk of leakage is acute. Furthermore, the overall height of the installation may prove to be problematic for other reasons.
The joints may be stressed by loadings e.g. arising from vibration thereby increasing the risk of failure of both valve seals and welded components. This is particularly evident during operation in off-shore installations where loadings to the overall structure by weather and sea conditions, aggravated by the vibrations of drilling operations can lead to unpredictable failure of the valve seals and welded components.
The present invention aims to overcome or at least mitigate the problems associated with the aforementioned prior art branch line valve assemblies.
According to one aspect of the present invention there is provided a flanged component for use in pipework wherein the flange is enlarged to an oversize thickness and provided with a recess to accommodate valve means for acting on fluids passing through the component in use.
Preferably the component is forged, and provides finished (e.g. by machining) surfaces adapted to provide welding surfaces remote from the flange for attachment of the component by welding to a pipe in a manner known per se.
By providing an aperture in the flange to house the valve means, the valve components themselves no longer need to have the structural strength required of the typical valve body shown in Fig. 1. Thus the omission of the valve body with associated flange connections enables the remaining valve components to be significantly reduced in size, and weight.
This opens the way for a multiplicity of valve components or other special purpose devices such as sensors to be accommodated in the flange in a more accessible position than in the prior art.
The valve means may, for example, be a ball valve located in a PTFE seat within the enlarged flange.
One embodiment of the present invention will now be described by way of example only with reference to the accompanying drawings, in which: FIGURE 1 is a schematic view of a typical flanged fitting, and FIGURE 2 is a part sectional view of a flanged fitting according to one aspect of the present invention.
As shown in Figure 2, a flanged component according to one aspect of the present invention comprises a forged elongated hollow body 1 adapted to be welded to the top of a process pipe. A circular, outwardly extending flange 2 is provided at the free end of the elongated body. The flange is of enlarged thickness to incorporate a ball valve 3 within the flanged portion of the component.
The ball valve comprises a ball 4 located within a PTFE seat 5 housed in the flanged portion of the component. The housing has a pressure relief cavity 6 within the flange. A valve stem 7 passes through a radial bore 8 in the flanged portion of the component, the free end of the stem contacting the ball . A split anti-blow-out ring 9 to prevent the stem blowing out in the event of a build-up of excessive pressure within the component which can result in leakage from within the pipeline thus endangering personnel or equipment, is located on the free end of the stem.
The stem is sealed within the bore by means of a primary seal 10 and a secondary seal 13. A lantern ring 11 located between primary and secondary seals is provided to detect failure of the primary seal. Both primary and secondary seals are loaded by means of a follower 12.
It is to be understood that the pressure relief cavity may be replaced by a hole in the ball venting to the upstream portion of the component. Furthermore, the ball valve described above may be replaced with a valve of any suitable type for example, a globe, needle or plug valve.
The flanged component as described above provides an instrument process connection which is quick, simple and inexpensive to manufacture and install. It can be easily adapted for different connections using the same component part. There is no requirement for a separate valve body and existing valve components can be reused. Furthermore, the valve can be disassembled and assembled for testing in situ, component parts are simple and inexpensive to replace.
It will be apparent that a further advantage of the above described component is that the overall height of the installation is greatly reduced therefore reducing the likelihood of the component being broken off of the pipeline.

Claims (5)

1. A flanged component for use in pipework, wherein the flange is enlarged to an oversize thickness and provided with a recess to accommodate valve means for acting on fluids passing through the component in use.
2. A component according to claim 1, wherein the component is forged and provides finished surfaces adapted to provided welding surfaces remote from the flange for attachment of the component by welding to a pipe.
3. A component according to claim 2, wherein the surfaces are finished by machining.
4. A component according to anyone of the preceding claims wherein the valve means is a ball valve located in a PTFE seat within the enlarged flange.
5. A flanged component substantially as hereinbefore described with reference to and as shown in the accompanying drawings.
GB9312959A 1993-06-23 1993-06-23 Flanged pipe component with valve in the flange Withdrawn GB2279418A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9312959A GB2279418A (en) 1993-06-23 1993-06-23 Flanged pipe component with valve in the flange

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9312959A GB2279418A (en) 1993-06-23 1993-06-23 Flanged pipe component with valve in the flange

Publications (2)

Publication Number Publication Date
GB9312959D0 GB9312959D0 (en) 1993-08-04
GB2279418A true GB2279418A (en) 1995-01-04

Family

ID=10737652

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9312959A Withdrawn GB2279418A (en) 1993-06-23 1993-06-23 Flanged pipe component with valve in the flange

Country Status (1)

Country Link
GB (1) GB2279418A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0688996A1 (en) * 1994-06-20 1995-12-27 The BOC Group plc Clamp apparatus

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1210401A (en) * 1967-01-31 1970-10-28 Boving & Co Ltd Improvements in and relating to butterfly valves
GB1467957A (en) * 1974-05-20 1977-03-23 Hoke Inc Mounting adaptor
US4770207A (en) * 1986-02-17 1988-09-13 Hydrotechnik Gmbh Fluidic system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1210401A (en) * 1967-01-31 1970-10-28 Boving & Co Ltd Improvements in and relating to butterfly valves
GB1467957A (en) * 1974-05-20 1977-03-23 Hoke Inc Mounting adaptor
US4770207A (en) * 1986-02-17 1988-09-13 Hydrotechnik Gmbh Fluidic system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0688996A1 (en) * 1994-06-20 1995-12-27 The BOC Group plc Clamp apparatus
US5609369A (en) * 1994-06-20 1997-03-11 The Boc Group Plc Clamp apparatus with opening for a probe

Also Published As

Publication number Publication date
GB9312959D0 (en) 1993-08-04

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)