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WO2016170311A1 - Dispositif de sécurité d'un tuyau de gaz - Google Patents

Dispositif de sécurité d'un tuyau de gaz Download PDF

Info

Publication number
WO2016170311A1
WO2016170311A1 PCT/GB2016/051074 GB2016051074W WO2016170311A1 WO 2016170311 A1 WO2016170311 A1 WO 2016170311A1 GB 2016051074 W GB2016051074 W GB 2016051074W WO 2016170311 A1 WO2016170311 A1 WO 2016170311A1
Authority
WO
WIPO (PCT)
Prior art keywords
bung
pipe
signal
sensor device
gas
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/GB2016/051074
Other languages
English (en)
Inventor
Mathew R PALMER
Christopher RJ HOLE
Adrian M WOODWARD
Neil Pollock
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.)
Technology Partnership PLC
Original Assignee
Technology Partnership PLC
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 Technology Partnership PLC filed Critical Technology Partnership PLC
Publication of WO2016170311A1 publication Critical patent/WO2016170311A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P13/00—Indicating or recording presence, absence, or direction, of movement
    • G01P13/0006—Indicating or recording presence, absence, or direction, of movement of fluids or of granulous or powder-like substances
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/05—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P13/00—Indicating or recording presence, absence, or direction, of movement
    • G01P13/0006—Indicating or recording presence, absence, or direction, of movement of fluids or of granulous or powder-like substances
    • G01P13/004—Indicating or recording presence, absence, or direction, of movement of fluids or of granulous or powder-like substances by using the rotation of vanes

Definitions

  • the present invention relates to a gas pipe security device.
  • Gas Distribution Operators are obliged to isolate gas supplies to properties that have not used the gas supply for 12 months. This involves removing the gas meter and disabling the gas supply.
  • Wormald Clamps a U-bend clamp that is placed over the ECV to prevent movement of the ECV handle from the closed position, which is secured with a lock.
  • the device is recognized as being too easily removed as the lock can simply be sawn off;
  • a solution device should not be wholly situated above or around the ECV as it can be sawn off.
  • the device should preferably not be situated inside a modified ECV as it can be unscrewed and removed, and a special ECV design would be needed.
  • the device should not be situated a long way down the pipe below the ECV as the supply can be mistaken for "dead” and become a safety risk. It is also important that a device, if it sits in the gas normally, must be intrinsically safe (IS) if it contains electrical or electronic parts, and the device must be compatible with varying sizes and shapes of ECV bore and varying gas pipe bores and materials.
  • IS intrinsically safe
  • the general approach has been to isolate completely the gas supply in certain situations, but there are occasions where it would be useful not to completely isolate the gas supply, but to raise an alarm if unauthorised use of the gas supply is detected.
  • the present invention seeks to do this in a manner which minimises IS issues, whilst also being simple to install, operate and remove.
  • the present invention seeks to provide a gas pipe security device which meets the above requirements.
  • a gas pipe security system comprising a bung device arranged so as to be placed inside the bore of a pipe in use and constructed such that, when gas passes through the pipe and bung the bung generates a sensing signal, and a sensor device for detecting the sensing signal generated by the bung and providing an alarm signal based thereon.
  • the present invention provides a simple bung which can be inserted into the gas supply using conventional techniques yet which has no power source so does not require intrinsic safety approval.
  • the associated sensing unit which detects the sensing signal from its position outside the pipe, is simple to construct, and can be battery powered and provided in a tamper resistant arrangement which is therefore also secure.
  • the sensing signal may be an acoustic signal.
  • Figure 1 is a schematic side view of a gas pipe security device according to the present invention.
  • Figure 2 is a side schematic cross-sectional view of the bung of Figure 1 ;
  • Figures 3 and 4 show installation of a device according to the present invention and removal of a device according to the present invention respectively.
  • the conventional emergency control valve 1 with fitting handle 2 is provided over a gas supply pipe 5.
  • the system of the invention comprises a first part in the form of a sensing unit 4 but also has a bung 3 which sits, in use, in the pipe 5.
  • FIG. 2 shows the bung 3 in more detail.
  • the bung 3 has one or more outer engagement members 8 in the form of rings which engage in use with the interior of the pipe 5.
  • These members 8 may be formed from rubber or other compliant material and may be designed for a specific pipe diameter or to be of sufficient flexibility in diameter to fit a variety of pipe sizes.
  • a central cylinder 6 with a screw threaded region 7 for engagement, in use, with an insertion tool 14 as will be described below.
  • Within the cylinder 6 is a rotor shaft 9 supported by one or more support components and bearings 10 in one or more places within the cylinder 6.
  • the rotor shaft 9 supports rotor blades 1 1 and a rotor flag 13.
  • a post 12 is fitted on the interior of the cylinder 6 and in a position in which the flag 12 engages therewith as the rotor shaft 9 rotates with the flag 13.
  • the bung 3 is arranged to be inserted in a pipe 5 in a position such that, if gas passes through the pipe and therefore through the cylinder 6 the rotor blades 1 1 rotate driving the shaft 9 to rotate the flag 13 and generate an acoustic signal upon engagement with the post 12.
  • Working in conjunction with the bung 3 is an acoustic sensor 4 which forms the other part of the security system.
  • the acoustic sensor 4 has a detector and transmitter and is arranged such that it can be clamped on the outside of the pipe 5 in a position adjacent to the bung 3 when it is installed in use.
  • the sensor 4 is configured to detect the acoustic signal generated by the bung 3 when gas passes through the pipe 5. It may be configured to detect the frequency of the signal from the bung 3. It can then send an alarm via radio or other communication if an acoustic signal is detected, that alarm being sent to a central control centre. It may also generate an alarm if it is removed from the pipe 5, and also to provide a regular status signal to the central control unit, that status signal potentially also providing an indication as to its battery status.
  • the functionality of the bung 3 can be provided with alternative noise generating configurations.
  • a configuration can be provided which provides an audio signal in the form of a "whistle" through non- moving components as gas passes there through.
  • alternatives to the flag 13 and fixed component 12 can be provided to generate the appropriate audio signal.
  • the bung could be configured to generate a sensing signal other than an acoustic signal, such as an electromagnetic signal, with the sensor 4 configured to detect such a sensing signal.
  • the system of the present invention is operated as follows. Firstly, the bung 3 is inserted into the pipe 5 via ECV 1 using a conventional tool 14.
  • the sensor 4 can then be attached to the exterior of the pipe 5 in a position generally in alignment with the position of the bung 3 within the pipe 5.
  • the sensor 4 can be configured such that its attachment to the pipe 5 activates the sensor 4 and any alarm configuration which will subsequently raise an alarm signal if the sensor 4 is removed.
  • the user may then allow brief flow of gas through the pipe 5 to check that the sensor is operating correctly and transmitting appropriate signals back to the central control centre. Once the bung 3 and sensor 4 are in place the ECV 1 can be closed.
  • FIG. 4 Removal is shown in Figure 4 in which an appropriate tool is used to remove the sensing unit 4.
  • the ECV 1 is then opened and a conventional tool 14, potentially with a screw thread for appropriate engagement to the threads 7 in bung 3, is positioned to remove the bung 3.
  • the ECV 1 is then closed and the gas supply reconnected.
  • the system of the present invention enables simple monitoring of unauthorised use of gas in the supply network in a secure and cost effective manner with minimal concern about intrinsic safety.
  • the system is also extremely simple to install and operate, and can be removed simply and effectively.
  • sensor 4 of the system of the present invention can use already established regional or national networks such as an M2M (machine-to-machine) radio network, although it is readily adapted to newer communications developments. It will also be appreciated that such networks can then ensure appropriate communication with a gas supplier's control centre where messages from the device can be viewed and the device managed through simple back-end software to ensure correct monitoring of alarms, tampers and low battery events.
  • M2M machine-to-machine

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Emergency Alarm Devices (AREA)

Abstract

L'invention concerne un système de sécurité d'un tuyau de gaz qui comprend un dispositif de bonde agencé et construit de manière à être placé à l'intérieur de l'alésage d'un tuyau lors de l'utilisation. Lorsque le gaz passe à travers le tuyau et la bonde, la bonde génère un signal de détection, et un dispositif de détection détecte le signal de détection généré par la bonde et émet un signal d'alarme sur la base de celui-ci.
PCT/GB2016/051074 2015-04-21 2016-04-19 Dispositif de sécurité d'un tuyau de gaz Ceased WO2016170311A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB1506775.4 2015-04-21
GBGB1506775.4A GB201506775D0 (en) 2015-04-21 2015-04-21 Gas pipe security device

Publications (1)

Publication Number Publication Date
WO2016170311A1 true WO2016170311A1 (fr) 2016-10-27

Family

ID=53298939

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2016/051074 Ceased WO2016170311A1 (fr) 2015-04-21 2016-04-19 Dispositif de sécurité d'un tuyau de gaz

Country Status (2)

Country Link
GB (1) GB201506775D0 (fr)
WO (1) WO2016170311A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3703715A (en) * 1970-12-21 1972-11-21 Byron L Mcnally Flood alarm
GB2087570A (en) * 1980-10-11 1982-05-26 Aspinall S Patent Governor Ltd Fluid flow sensors
FR2546293A1 (fr) * 1983-05-20 1984-11-23 Collard Trolart Detecteur-controleur d'ecoulement gazeux entre deux enceintes communicantes, notamment pour conduits de fumee et/ou d'aeration
US20030066361A1 (en) * 2001-10-09 2003-04-10 Kim Chang Ho High accuracy turbine flowmeter using magnetic bearing
WO2007032012A2 (fr) * 2005-09-15 2007-03-22 Amiram Shoshana Dispositif de gonflage des pneumatiques
US20110308638A1 (en) * 2010-06-16 2011-12-22 Mueller International, Llc Infrastructure monitoring devices, systems, and methods

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3703715A (en) * 1970-12-21 1972-11-21 Byron L Mcnally Flood alarm
GB2087570A (en) * 1980-10-11 1982-05-26 Aspinall S Patent Governor Ltd Fluid flow sensors
FR2546293A1 (fr) * 1983-05-20 1984-11-23 Collard Trolart Detecteur-controleur d'ecoulement gazeux entre deux enceintes communicantes, notamment pour conduits de fumee et/ou d'aeration
US20030066361A1 (en) * 2001-10-09 2003-04-10 Kim Chang Ho High accuracy turbine flowmeter using magnetic bearing
WO2007032012A2 (fr) * 2005-09-15 2007-03-22 Amiram Shoshana Dispositif de gonflage des pneumatiques
US20110308638A1 (en) * 2010-06-16 2011-12-22 Mueller International, Llc Infrastructure monitoring devices, systems, and methods

Also Published As

Publication number Publication date
GB201506775D0 (en) 2015-06-03

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