• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a pipe system (100) comprising: - first and second inner tubes (102a-b) assembled end to end, - a hot fluid detector (153), - for each inner tube (102a-b). ), a first peripheral tube (104a-b) into which the inner tube (102a-b) is inserted and fixed, - for each first peripheral tube (104a-b), a second peripheral tube (106a-b) in which is introduced and fixed the first peripheral tube (104a-b), and - a sleeve (150) having a first part (152) which encloses the ends of the two second peripheral tubes (106a-b) facing each other, and a second part (154) ) which extends between the two ends and up to the walls of the two first peripheral tubes (104a-b), and a channel (158) passing through the sleeve (150) and opening, on the one hand, in the volume between the inner tubes (102a-b) and the first peripheral tubes (104a-b) and, on the other hand, in the vicinity hot fluid detector (153). Such a piping system is thermally insulated and allows detection in case of leakage.
    公开号:FR3055686A1
    申请号:FR1658225
    申请日:2016-09-05
    公开日:2018-03-09
    发明作者:Olivier Verseux；David Blain
    申请人:Airbus Operations SAS；
    IPC主号:
    专利说明:

    TECHNICAL AREA
    The present invention relates to a piping system which has means for detecting a leak.
    STATE OF THE PRIOR ART
    In certain environments, it is necessary to prevent a pipe carrying a pressurized hot fluid, such as air, from leaking from the pipe, in particular, when this pipe is in the vicinity of a highly flammable fluid, such as for example in an aircraft engine.
    In addition, in such an environment, it is desirable to lower the temperature of the pipeline in order to avoid any risk of starting a fire.
    Currently, it is known to coat the pipe transporting hot air with a thermal insulation of the rock wool type.
    In order to detect a possible leak in the pipe, it is known to install 15 vents along the thermal insulation and to position hot air detectors in the vicinity of these vents. Thus, when there is a leak, the hot air spreads through the thermal insulation and exits through the vents where it can be detected by the detectors.
    Since the thermal insulation slows the hot air, it is necessary to install vents regularly at distances relatively close to each other.
    In addition, such detectors are conventionally fragile wires which are shaped along the pipeline using regularly spaced supports and with minimum curvatures to be observed. Such an installation is therefore carried out manually and is relatively long.
    STATEMENT OF THE INVENTION
    An object of the present invention is to provide a piping system which has means for detecting a leak and which is thermally insulated.
    To this end, a piping system is proposed comprising:
    - a first inner tube and a second inner tube assembled end to end, 30 - a hot fluid detector,
    - for each inner tube, a first peripheral tube into which the inner tube is inserted and fixed, the ends of the first two peripheral tubes being at a distance from each other,
    - for each first peripheral tube, a second peripheral tube into which the first peripheral tube is inserted and fixed, the ends of the two second peripheral tubes being at a distance from each other, and
    - a sleeve having a first part which encloses the ends of the two second peripheral tubes facing each other, and a second part inside the first part and which extends between the two ends and up to the walls of the first two peripheral tubes , and a channel passing through the sleeve and opening, on the one hand, into the volume between the inner tubes and the first peripheral tubes and, on the other hand, in the vicinity of the hot fluid detector.
    Such a piping system is therefore thermally insulated and allows good leak detection by limiting the pressure drops.
    Advantageously, the sleeve consists of two parts fixed to each other by hinges.
    Advantageously, the assembly consisting of a first tube and the peripheral tubes which surround it is produced by 3D printing.
    BRIEF DESCRIPTION OF THE DRAWINGS
    The characteristics of the invention mentioned above, as well as others, will appear more clearly on reading the following description of an exemplary embodiment, said description being made in relation to the accompanying drawings, among which:
    Fig. 1 is a perspective view of a pipe system according to the invention, and FIG. 2 is a view in section through a radial plane of the pipe system of FIG. 1.
    DETAILED DESCRIPTION OF EMBODIMENTS
    Fig. 1 and FIG. 2 show a pipe system 100 which constitutes a junction zone between several tubes. The piping system 100 includes a first inner tube 102a and a second inner tube 102b. The two inner tubes 102a-b are assembled end to end, for example by welding, along a contact line 103. The two inner tubes 102a-b thus constitute a pipe which transports a pressurized hot fluid such as air.
    For each inner tube 102a-b, the piping system 100 comprises a first peripheral tube 104a-b into which is introduced the inner tube 102a-b which is fixed to the first peripheral tube 104a-b here by first spacers 108a-b which are fixed between the inner tube 102a-b and the first peripheral tube 104a-b.
    The ends of the first two peripheral tubes 104a-b are spaced from one another in order to allow free passage from the interior of the first peripheral tubes 104a-b to the outside of the first peripheral tubes 104a-b. The contact line 103 is thus also accessible.
    For each first peripheral tube 104a-b, the piping system 100 comprises a second peripheral tube 106a-b into which is introduced the first peripheral tube 104a-b which is fixed to the second peripheral tube 106a-b here by second spacers HOa- b which are fixed between the first peripheral tube 104a-b and the second peripheral tube 106a-b.
    The ends of the two second peripheral tubes 106a-b are spaced from one another in order to allow free passage from the interior of the second peripheral tubes 106a-b to the outside of the second peripheral tubes 106a-b. The contact line 103 is thus also accessible.
    Such an arrangement provides thermal insulation of the inner tube 102a-b due to the presence of two additional layers of air.
    In the event of leakage of the pressurized hot fluid, this hot fluid spreads in the volumes between the interior tubes 102a-b and the first peripheral tubes 104a-b, then possibly between the first peripheral tubes 104a-b and the second peripheral tubes 106a- b. This hot fluid therefore no longer experiences a pressure drop due to an insulating material and it can then propagate over greater distances, which makes it possible to reduce the number of detectors to be provided.
    In particular, it is possible to have several junction zones one after the other and when there is a leak of hot fluid, it can spread quickly through the different tubes without encountering obstacles.
    The piping system 100 also includes a sleeve 150 which extends around the second peripheral tubes 106a-b in order to seal between the inside of the piping system 100 and the outside of the second peripheral tubes 106a-b. In Fig. 1, the sleeve 150 is seen in section.
    The sleeve 150 thus has a first part 152 in the form of a cylinder which encloses the ends of the two second peripheral tubes 106a-b facing each other, and a second part 154 in the form of a crown inside the first part 152 and which extends between the two ends and up to the walls of the first two peripheral tubes 104a-b.
    As best seen in FIG. 2, the second part 154 fills the space between the ends of the two second peripheral tubes 106a-b and the space between the second peripheral tubes 106a-b and the first peripheral tubes 104a-b.
    The piping system 100 also has a hot fluid detector 153, conventionally a temperature sensor placed in the vicinity of the sleeve.
    150.
    The sleeve 150 is pierced with a channel 158 which passes through it and opens, on the one hand, into the volume between the inner tubes 102a-b and the first peripheral tubes 104a-b and, on the other hand, in the vicinity of the detector hot fluid 153.
    Thus, when an inner tube 102a has a leak 202 of hot fluid, this hot fluid spreads rapidly in the volume between the inner tubes 102a-b and the first peripheral tubes 104a-b, then through the channel 158, it reaches the hot fluid detector 153.
    The hot fluid detector 153 can then send a signal to a remote monitoring system, for example by a wired or radio connection.
    As explained above, it is possible to have several junction zones one after the other. In this case, it is possible to provide that only certain sleeves 150 have a channel 158 and a hot fluid detector 153. In fact, the other sleeves will not be drilled and will provide sealing and the hot fluid which will have leaked will propagate until the next sleeve 150 pierced and equipped with a hot fluid detector 153.
    Of course for better thermal insulation, it is possible to provide more peripheral tubes.
    The sleeve 150 may for example consist of two parts fixed to each other by hinges. The placement of the sleeve 150 then consists in placing the two parts around the tubes and in tightening the two parts around the tubes and in fixing them by any appropriate means such as for example screws.
    According to a particular embodiment, each assembly consisting of a first tube 102a-b and the peripheral tubes 104a-b and 106a-b which surround it is produced by 3D printing to allow complex shapes to be produced, in particular elbows . In particular, the use of 3D printing makes it possible to design sets that prevent the bursting of said set. In the embodiment of the invention presented here, the spacers 108a-b and 110A-b are produced at the same time by 3D printing. The 3D printing technology implemented is preferably an additive technology, such as for example the so-called ALM technology (additive layer manufacturing in English).
    权利要求:
    Claims (3)
    [1" id="c-fr-0001]
    1) Piping system (100) comprising:
    - a first inner tube (102a) and a second inner tube (102b) assembled end to end,
    5 - a hot fluid detector (153),
    - for each inner tube (102a-b), a first peripheral tube (104a-b) into which is inserted and fixed the inner tube (102a-b), the ends of the first two peripheral tubes (104a-b) being at a distance one from the other,
    - for each first peripheral tube (104a-b), a second peripheral tube (106a-b) into which is inserted and fixed the first peripheral tube (104a-b), the ends of the two second peripheral tubes (106a-b) being at a distance from each other, and
    - a sleeve (150) having a first part (152) which encloses the ends of the two second peripheral tubes (106a-b) facing each other, and a
    15 second part (154) inside the first part (152) and which extends between the two ends and up to the walls of the first two peripheral tubes (104a-b), and a channel (158) passing through the sleeve (150) and opening, on the one hand, into the volume between the inner tubes (102a-b) and the first peripheral tubes (104a-b) and, on the other hand, in the vicinity of the hot fluid detector (153 ).
    20
    [2" id="c-fr-0002]
    2) Pipe system (100) according to claim 1, characterized in that the sleeve (150) consists of two parts fixed to each other by hinges.
    [3" id="c-fr-0003]
    3) Pipe system (100) according to one of claims 1 or 2, characterized in that the assembly consisting of a first tube (102a-b) and tubes
    25 peripherals (104a-b, 106a-b) which surround it are produced by 3D printing.
    106a
    PL. 1/1
    150
    110a
    152
    110b
    104b
    类似技术:
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    同族专利:
    公开号 | 公开日
    US10330221B2|2019-06-25|
    FR3055686B1|2018-09-14|
    US20180066773A1|2018-03-08|
    CN107795769A|2018-03-13|
    CN107795769B|2019-10-18|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    WO1997038258A1|1996-04-04|1997-10-16|N.V. Kema|Tube system for transport of fluids thermally isolated from the ambient|
    JPH10205659A|1997-01-23|1998-08-04|Sumitomo Metal Ind Ltd|Fluid conducting buried coated steel pipe|
    EP0949444A2|1998-04-09|1999-10-13|Semperit Aktiengesellschaft Holding|Flexible cryogenic hose|
    US20130014840A1|2011-07-13|2013-01-17|Airbus Operations Gmbh|Pressurised hot air duct of an aircraft equipped with a device for detecting air leakage|
    WO2016111840A1|2015-01-09|2016-07-14|Stonitsch Lawrence|Method for forming pressure-testable field joint between pre-insulated pipe sections, and piping system with presure-testable field joint|GB2570871A|2018-01-31|2019-08-14|Select Engineering Asia Ltd|Safety sleeve for conduits|US3882382A|1972-09-07|1975-05-06|Transco Inc|Insulated conduit cover and leak detector|
    FR2372425B1|1976-11-26|1979-03-23|Solvay|
    DE3045257A1|1980-12-01|1982-06-03|Friedhelm 5893 Kierspe Schmitz|CONTROL SYSTEM FOR LEAK DETECTING PIPELINES|
    US6032699A|1997-05-19|2000-03-07|Furon Company|Fluid delivery pipe with leak detection|
    US6039066A|1998-12-04|2000-03-21|Selby; William J.|Safety hose system|
    CA2291492A1|1998-12-04|2000-06-04|William J. Selby|A safety hose system|
    GB0013718D0|2000-06-07|2000-07-26|Coflexip|Lined pipe annulus vent|
    JP4508374B2|2000-08-07|2010-07-21|三菱重工業株式会社|Gas leak detection system|
    FR2816691B1|2000-11-10|2002-12-27|Coflexip|CATHODIC PROTECTION DEVICE FOR FLEXIBLE DUCTS|
    ES2229838B1|2002-02-25|2005-12-16|Jose Luis Casañas Dominguez|SECURITY PIPING FOR THE TRANSPORTATION OF CONTAMINATING PRODUCTS.|
    HU2592U|2003-04-07|2003-09-29|Laszlo Juhasz|Conduit system for gaseous in walls|
    JP2005221348A|2004-02-04|2005-08-18|Laserfront Technologies Inc|Piping with leak detecting function and leak detector|
    US20080141761A1|2006-12-19|2008-06-19|Lohman Paul C|Flood and mold protection system|
    DE202007008555U1|2007-06-19|2008-10-30|Wrede & Niedecken Gmbh|Protective clothing for at least one oil-carrying pipeline|
    JP4624391B2|2007-09-28|2011-02-02|パンパシフィック・カッパー株式会社|Method for detecting breakage of transfer pipe in dry concentrate transfer pipe piping structure|
    US20120228865A1|2011-03-08|2012-09-13|Kevin Sopoliga|Independently expandable double containment joint|
    CN102758973B|2012-07-17|2014-02-12|东北石油大学|Dual-layer pipe wall composite-type gas pipeline and leakage monitoring method|DE102018113092B3|2018-06-01|2019-11-21|Rolls-Royce Deutschland Ltd & Co Kg|Gas turbine engine and method for determining a leak|
    CN109340506B|2018-12-12|2020-11-24|湖南达道新能源开发有限公司|Heat-preserving heat distribution pipeline|
    CN112145817A|2020-10-13|2020-12-29|祁东中燃城市燃气发展有限公司|Gas collecting pipeline of natural gas|
    法律状态:
    2017-09-28| PLFP| Fee payment|Year of fee payment: 2 |
    2018-03-09| PLSC| Search report ready|Effective date: 20180309 |
    2018-09-24| PLFP| Fee payment|Year of fee payment: 3 |
    2019-09-26| PLFP| Fee payment|Year of fee payment: 4 |
    2020-09-14| PLFP| Fee payment|Year of fee payment: 5 |
    2021-09-21| PLFP| Fee payment|Year of fee payment: 6 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1658225A|FR3055686B1|2016-09-05|2016-09-05|PIPING SYSTEM WITH LEAK DETECTION|
    FR1658225|2016-09-05|FR1658225A| FR3055686B1|2016-09-05|2016-09-05|PIPING SYSTEM WITH LEAK DETECTION|
    US15/692,755| US10330221B2|2016-09-05|2017-08-31|Piping system with leak detection|
    CN201710779544.6A| CN107795769B|2016-09-05|2017-09-01|Pipe-line system with leak detecting device|
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