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WO2025169020A1 - Ensemble de gestion d'accident pour système de canalisation à double confinement - Google Patents

Ensemble de gestion d'accident pour système de canalisation à double confinement

Info

Publication number
WO2025169020A1
WO2025169020A1 PCT/IB2025/050372 IB2025050372W WO2025169020A1 WO 2025169020 A1 WO2025169020 A1 WO 2025169020A1 IB 2025050372 W IB2025050372 W IB 2025050372W WO 2025169020 A1 WO2025169020 A1 WO 2025169020A1
Authority
WO
WIPO (PCT)
Prior art keywords
casing
pipeline
pressure
pipeline system
valve
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.)
Pending
Application number
PCT/IB2025/050372
Other languages
English (en)
Inventor
Samuel HENCHOZ
Alberto Mian
Grégory MEERTENS
Thomas Wicht
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.)
Exergo Sa
Original Assignee
Exergo Sa
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 Exergo Sa filed Critical Exergo Sa
Publication of WO2025169020A1 publication Critical patent/WO2025169020A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17D—PIPE-LINE SYSTEMS; PIPE-LINES
    • F17D5/00—Protection or supervision of installations
    • F17D5/02—Preventing, monitoring, or locating loss
    • F17D5/04—Preventing, monitoring, or locating loss by means of a signalling fluid enclosed in a double wall
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17D—PIPE-LINE SYSTEMS; PIPE-LINES
    • F17D5/00—Protection or supervision of installations
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17D—PIPE-LINE SYSTEMS; PIPE-LINES
    • F17D5/00—Protection or supervision of installations
    • F17D5/02—Preventing, monitoring, or locating loss
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00—Investigating fluid-tightness of structures
    • G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
    • G01M3/28—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds
    • G01M3/2807—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for pipes
    • G01M3/2815—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for pipes using pressure measurements

Definitions

  • Pipelines featuring a double containment arrangement are a well-established technology used essentially when the risk posed by a single containment pipeline on people, the environment or things would otherwise be unacceptably high.
  • a pipeline sectioning mechanism might also need to be integrated in conjunction with the double containment. That way the discharge of an excessive amount of fluid can be prevented or at least minimized.
  • the present invention addresses several challenges linked to the transportation of a fluid via pipeline where a double containment arrangement of said pipeline is required, and where the triple point pressure of said fluid is above that of the surrounding environment of the pipeline.
  • the present invention consists in a double containment pipeline system comprising a pressurized pipeline and a protective casing in which the pipeline is contained and wherein the fluid pressure within the pipeline, at its triple point, is above the pressure within the casing; said system comprising control elements configured to regulate a change in the thermodynamic state within the casing and wherein said control elements configured to be actuated when a predefined threshold of said thermodynamic state has been reached.
  • Figure 1 shows a first example of the invention
  • Figure 2 represents pipeline sectioning valves triggered by an excessive overpressure within the casing
  • Figure 3 represents pipeline sectioning valves triggered by a lack of pressure within the casing
  • Figure 4 illustrates a leakage monitoring and alarm system
  • Figure 5 represents pipeline sectioning valves triggered by temperatures switches
  • Figure 6 shows a staged discharge of the fluid
  • Figure 7 shows a staged pressure relief of the casing
  • Figure 1 shows an example of how the manholes and servicing ports can be used to install the pressurized components in the casings
  • Figure 2 shows an example of a pipeline sectioning valves installed within the casing and that is passively actuated by the rise in pressure within the casing
  • Figure 10 shows an example of a pipeline sectioning valves installed outside of the casing and that is passively actuated by the rise in pressure within the casing
  • Figure 11 represents a passive sectioning valve system made of two opposite excess flow valves
  • Discharge vent of the casing 12 Staged discharge apparatus, 12a pressure operated discharge device for small leaks (.g. direct- loaded safety valve), 12b pressure operated discharge device for large leaks (e.g. rupture disk)
  • TTL Temperature Switch Low
  • the casing 6-12 protects the pressurized pipeline 1-5 from third party aggressions and external loads.
  • the pressure relief valves 4, 12a and 12b (installed on each segment that can be hydraulically isolated) protect all the equipment against overpressure (see figures 1, 6 and 7).
  • FIG. 6 more precisely represents staged discharge of the fluid.
  • the thermodynamic state of the fluid within the pressurized components and within the casing during the whole discharge avoids entering the domain in the phase diagram where a solid phase can exist thereby eliminating the risk of clogging caused by solid particles that otherwise could impede the safe discharge of the fluid.
  • Figure 7 represents staged pressure relief of the casing.
  • the thermodynamic state of the fluid within the pressurized components and within the casing during the whole discharge avoids entering the domain in the phase diagram where a solid phase can exist thereby eliminating the risk of clogging caused by solid particles that otherwise could impede the safe discharge of the fluid.
  • sectioning valves 5 might also be installed to limit the amount of fluid leaked out via the discharge vent 11 and the staged discharge apparatus 12.
  • Said sectioning valves can be triggered via various signal depending on the following events: a. Leak from the pressurized pipeline into the casing. A pressure swich high PSH 13 triggers the closure of the sectioning valves 5 when the pressure within the casing goes above a preset value. (See Figure 2) b. Leak from the pressurized pipeline outside of the casing. A gas detector 14, sensitive to the gas being transported by the pipeline triggers the closure of the sectioning valves 5 when a concentration above a preset value is reached.
  • one or several pressure switch low PSL 15 will preventively trigger the closure of the pipeline sectioning valves 5.
  • PSL 15 It is also possible to use directly the pressure of the fluid in the casing (that will rise in the event of a significant leak) to feed the actuator of a pneumatically actuated sectioning valve 5, 21-24, thus providing a passive sectioning mechanism that does not require any external source of energy. (See Figure 9 and 10).
  • Figure 9 precisely shows an example of a pipeline sectioning valves 5 installed within a chamber 6 of the casing and that is passively actuated by the rise in pressure within the casing in the event of a significant leak from one or several of the pressurized components into the casing.
  • the rise in pressure within the casing will create a pressure differential between the feed port 21 and the exhaust port 24, that will cause the pneumatic actuator 23 to close the valve 5, since the pressure in the casing can rapidly rise above the maximum feed pressure of the actuator a pressure reducing regulator 22 that avoids exceeding said maximum feed pressure.
  • Figure 10 shows an of a pipeline sectioning valves 5 installed outside of the casing that is passively actuated by the rise in pressure within the casing in the event of a significant leak from one or several of the pressurized components into the casing.
  • the rise in pressure within the casing will create a pressure differential between the feed port 21 and the exhaust port 24, that will cause the pneumatic actuator 23 to close the valve 5, since the pressure in the casing can rapidly rise above the maximum feed pressure of the actuator a pressure reducing regulator 22 that avoids exceeding said maximum feed pressure.
  • a passive pipeline sectioning valve 5 can also comprise two excess flow valves 25, that will close when the flow goes above a preset value. Said preset value must be selected above the maximum flowrate of the transported fluid during normal operation.
  • valves must also be installed in series and close to one another but with an opposite closing direction of flow, thus allowing for a sectioning of the pipeline regardless of the position of the leaking point with respect to the sectioning valve location.
  • Each valve can be equipped with a valve position switch VPS 26, to report the position of said valves, and be able to detect which segment of pipe has been isolated. Said segment being located between two consecutive valve position switch 26 that report a close valve. Note that if an excess flow valve can have closing excess flows in both directions, it can substitute the two opposite valves arrangement described previously. In that eventuality, if valve position switches are to be used, both closed position of the valve would need to be reported (closed on the right or closed on the left) to be able to indicate which pipeline segment has been isolated. (See Figure 11)

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Pipeline Systems (AREA)

Abstract

L'invention concerne un système de canalisation à double confinement comprenant une canalisation sous pression (1-3) et un tubage de protection (6, 7) dans lequel la canalisation (1-3) est contenue et dans lequel la pression de fluide à l'intérieur de la canalisation (1-3), à son point triple, est supérieure à la pression à l'intérieur du tubage (6, 7) ; ledit système comprenant des éléments de commande (4, 10, 11, 12a, 12b, 13 à 26) configurés pour réguler un changement de l'état thermodynamique à l'intérieur du tubage et lesdits éléments de commande (4, 10, 11, 12a, 12b, 13 à 26) étant configurés pour être actionnés lorsqu'un seuil prédéfini dudit état thermodynamique a été atteint.
PCT/IB2025/050372 2024-02-08 2025-01-13 Ensemble de gestion d'accident pour système de canalisation à double confinement Pending WO2025169020A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IB2024051152 2024-02-08
IBPCT/IB2024/051152 2024-02-08

Publications (1)

Publication Number Publication Date
WO2025169020A1 true WO2025169020A1 (fr) 2025-08-14

Family

ID=94386513

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2025/050372 Pending WO2025169020A1 (fr) 2024-02-08 2025-01-13 Ensemble de gestion d'accident pour système de canalisation à double confinement

Country Status (1)

Country Link
WO (1) WO2025169020A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20200208771A1 (en) * 2017-09-26 2020-07-02 Daewoo Shipbuilding & Marine Engineering Co., Ltd. System for circulating air through double pipes for supplying gas and air circulation method using same
CN112709871B (zh) * 2020-12-31 2022-10-14 太原三凌通风设备有限公司 一种防泄漏的化工管道系统
US20230408029A1 (en) * 2021-01-29 2023-12-21 Manuel Munoz Saiz Energy and hydrogen transport system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20200208771A1 (en) * 2017-09-26 2020-07-02 Daewoo Shipbuilding & Marine Engineering Co., Ltd. System for circulating air through double pipes for supplying gas and air circulation method using same
CN112709871B (zh) * 2020-12-31 2022-10-14 太原三凌通风设备有限公司 一种防泄漏的化工管道系统
US20230408029A1 (en) * 2021-01-29 2023-12-21 Manuel Munoz Saiz Energy and hydrogen transport system

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