• 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 module (16) has a first attachment region (50), a second attachment region (54), and a peripheral wall (40). The module also comprises a perforated transverse wall (44) disposed transversely in a lumen (42) of the peripheral wall (40), an airbag (46) adapted to be deployed in the lumen (42) from a configuration contracted towards an expanded configuration and a rapid inflation device (48) for the airbag (46).
    公开号:FR3052842A1
    申请号:FR1655585
    申请日:2016-06-16
    公开日:2017-12-22
    发明作者:Jean Pierre Languy
    申请人:Technip France SAS；
    IPC主号:
    专利说明:

    Fast shutter module for a pipe, pipe, instaiiation and associated process
    The present invention relates to a rapid shutter module of a pipe, comprising: a first attachment region to a first structure, in particular to a first section of the pipe; a second attachment region to a second structure, in particular to a second section of the pipe; - a peripheral wall defining an inner lumen extending between the first attachment region and the second attachment region.
    Such a module is intended to be interposed on a gas flow line, in particular an air introduction or air extraction pipe in a building of a fluid exploitation installation. The fluid operating installation is for example an offshore installation, such as a platform, or an onshore installation, including a refinery, a petrochemical plant ...
    In these installations, the nature of the fluids used requires the provision of explosion-proof spaces, fire, or toxic products that could be broadcast in the facility.
    These spaces are in particular the living quarters or more generally rooms in which staff circulates. It can also be premises containing fragile equipment to remain operational after explosion (s).
    Normally, in the absence of an explosion, it is necessary to introduce the necessary air to people and certain equipment, then to extract it. Therefore, even if the walls of the room are resistant to explosion and / or fire, openings are provided in the room for the arrival of air supply ducts or air extraction.
    In the event of a detected incident, these openings must be closed as quickly as possible to avoid, for example, that the overpressure of the explosion enters the room. For this purpose, it is known to use blast damper (English damper) which close the openings when they are affected by an explosion pressure. These equipments are usually mechanical. They look like classic building ventilation slats, the closing of which is automatic by mechanical release, when the explosion pressure they undergo exceeds a certain threshold.
    Such dampers are not entirely satisfactory, since their exact performance on a particular site depends on their inertia at closing.
    This inertia is known only vis-à-vis a particular pressure signal, that of a laboratory test often different from the actual overpressure signal envisaged.
    In any case, their performance is generally insufficient and allow some of the external pressure to enter the ventilation network, and therefore in the building.
    Their level of reliability is also difficult to verify because these shock absorbers are manufactured in small series and are not tested regularly. Their reliability can also drop over time, especially in a marine environment.
    To overcome this problem, US6217441 and US4522116 describe gas supply lines in a building, which are provided with airbags. The cushions inflate when an incident is detected and thus plug the pipes.
    These devices have some disadvantages, particularly with regard to their installation and replacement after use, which requires disassembling all the pipe in which they are installed.
    Moreover, their reliability remains questionable, insofar as they must completely fill at least a cross section of the duct in which they are installed to ensure a good seal. These devices are not wedged axially, they can in some cases be pushed and do not completely close the cross section of the conduit.
    An object of the invention is therefore to provide means for rapidly securing a pipe in the event of an incident, particularly in the event of an explosion, fire, or contamination by a toxic product, which are simple to install in the driving, while being extremely reliable. To this end, the subject of the invention is a module of the aforementioned type, comprising: a perforated transverse wall, arranged transversely with respect to the light; an airbag, capable of being deployed in the light from a configuration contracted towards an expanded configuration bearing on the perforated transverse wall for closing off at least one transverse section of the light; a device for rapid inflation of the airbag, able to trigger on reception of a triggering signal.
    The module according to the invention may comprise one or more of the following characteristics, taken separately or in any technically possible combination: at least one additional transverse surface of support of the airbag in deployed configuration, extending transversely with respect to the light opposite the perforated transverse wall; an additional perforated transverse wall defining the additional transverse support surface; the peripheral wall defines a shoulder delimiting the additional transverse support surface; at least one movable flap in the light between an erased position and a transversal position of interposition in the light, the shutter defining the additional transverse support surface in the transverse position of interposition; - The airbag in contracted configuration extends into the light; - The airbag in contracted configuration is carried by the perforated transverse wall; - The airbag contracted configuration extends out of the light, the peripheral wall defining a lateral expansion passage of the airbag; the airbag in deployed configuration forms a curtain closing off the light transversely; a first flange defining the first fastening region and a second flange defining the second fastening region; - The inflation device comprises a pressurized gas cartridge and / or a set of chemical generation of gas under pressure. The subject of the invention is also a pipe for circulating a gas in a fluid exploitation installation, comprising: a first pipe section; a module as defined above, fixed on the first pipe section and advantageously interposed between the first pipe section and a second pipe section. The invention also relates to a fluid operating installation, comprising: - at least a first space to be protected during an incident; a conduct as defined above, opening into the first space; at least one incident detection sensor connected to the rapid inflation device and a processing unit connected to each sensor and to the fast shutter module for producing a triggering signal of the inflation device during the detection of an incident. The subject of the invention is also a method for circulating a gas in a fluid exploitation installation, comprising the following steps: providing a pipe as defined above, the airbag occupying its contracted configuration; gas flowing through the light; - upon receipt of a trigger signal, activation of the inflation device; inflating the airbag by the inflation device to reach the extended configuration resting on the transverse perforated wall; - closing by the airbag at least a cross section of the light, preventing the passage of gas through the light. The invention will be better understood on reading the description which will follow, given solely by way of example, and with reference to the appended drawings, in which: FIG. 1 is a diagrammatic view from above of a room a fluid exploitation installation provided with at least one fast shutter module according to the invention, at the beginning of an explosion; - Figure 2 is a schematic view, taken in section along a vertical plane, of a pipe of the installation of Figure 1, provided with a first rapid shutter module being deployed according to the invention; FIG. 3 illustrates in perspective various components of the first fast shutter module; - Figures 4 and 5 are views similar to Figure 1, during the progression of the pressure front of the explosion; FIG. 6 is a view similar to FIG. 2 of a first variant of fast shutter module according to the invention; FIG. 7 is a view similar to FIG. 2 of a second variant of closure module according to the invention; FIG. 8 is a view similar to FIG. 3 of a third variant of closure module according to the invention; FIG. 9 is a view similar to FIG. 2 of a fourth variant of a closure module according to the invention; FIG. 10 is a view similar to FIG. 2 of a fifth variant of closure module according to the invention.
    In what follows, the terms "upstream" and "downstream" refer to the normal direction of circulation of a fluid, in particular a gas under pressure or a pressure surge at a explosion.
    A fluid operating installation 10 according to the invention is illustrated in FIG. 1. The installation 10 comprises a protected space 12 in the event of an incident, and at least one gas circulation pipe 14, opening into space 12 protected, the pipe 14 being provided with a first module 16 quick shutter according to the invention. The installation 10 further comprises at least one incident sensor 18, capable of detecting the occurrence of an incident, and a processing unit 20, connected to each sensor 18 and to each closure module 16, to enable activation of the shutter module 16 during an incident. The protected space 12 is for example located in a building, such as a living or working space of a marine installation, such as a platform, or a land installation such as a refinery or a petrochemical plant. The protected space 12 is delimited by at least one wall 22 sealed, resistant to explosion. The wall 22 delimits at least one gas circulation opening 24, through which the pipe 14 opens. The installation 10 preferably comprises a plurality of sensors 18 located outside the protected space 12, at locations angularly distributed around the outside. protected area 12.
    Each sensor 18 is for example a sensor for detecting a pressure edge, a temperature detection sensor and / or a sensor for detecting a toxic product.
    In the case of a sensor for detecting a pressure edge, this is for example a fuse type or accelerometer type overpressure detector. The unit 20 is advantageously located in the protected space 12. It is connected each sensor 18 to collect the data detected by each sensor 18, and to produce a shutter release signal of the shutter module 16, when the data collected from at least one sensor 18 correspond to the detection of an incident .
    In the example shown in FIG. 1, the installation 10 comprises a plurality of ducts 14 each opening through an opening 24.
    The pipe 14 is advantageously a ventilation pipe suitable for bringing air into the protected space or for extracting air out of the protected space 12. It is for example connected to a ventilation / air conditioning system.
    With reference to FIG. 2, each pipe 14 comprises a first upstream section 30, a second downstream section 32, and a rapid closure module 16, mounted between a downstream end of the upstream section 30 and an upstream end of the downstream section 32, for fluidically connecting the upstream section 30 to the downstream section 32.
    In this example, the upstream section 30 and / or the downstream section 32 are fixed to the civil engineering of the building, for example by a bracket 33. This ensures a robust mechanical resistance to the pipe 10, especially in case of explosion.
    The upstream section 30 has, at its downstream end, a downstream flange 34, on which the rapid closure module 16 rests. Similarly, the downstream section 32 has, at its upstream end, an upstream flange 36, on which builds the fast shutter module 16.
    The upstream section 30 is resistant to the overpressure entering therein which are generally less than 500 mbar (incident pressure reference). It can however be designed as the rest of the system for higher overpressures.
    In this example, the upstream section 30 and the downstream section 32 each have an internal passage 38, the internal passages 38 of the sections 30, 32 being here identical cross sections in the vicinity of the fast closure module 16.
    As illustrated in FIG. 2 and in FIG. 3, the rapid closure module 16 has a peripheral wall 40 defining an internal gas circulation lumen 42, and a transverse perforated wall 44, disposed transversely at one end of the lumen 42. Advantageously, the rapid closure module 16 further comprises an additional perforated transverse wall 45, disposed transversely at another end of the lumen 42.
    The fast shutter module 16 also comprises an airbag 46 capable of being deployed in the lumen 42, from a configuration contracted towards an expanded configuration resting on the perforated transverse wall 44 and a device 46 for rapidly inflating the cushion 46, which is clean. to be triggered upon receipt of a trigger signal from the processing unit 20.
    The peripheral wall 40 extends around the axis A-A '. It is here of rectangular section, but a circular or polygonal cross section is possible. It internally defines the lumen 42. Preferably, the cross section of the lumen 42 is identical to the cross section of the passage 38 of the upstream section 30, in the vicinity of the module 16, and to the cross section of the passage 38 of the downstream section 32, in the vicinity of the module 16.
    In the example shown in FIG. 2, the lumen 42 extends along a longitudinal axis A-A 'that is coaxial with the longitudinal axis of the upstream section 30 and the downstream section 32 in the vicinity of the module 16. The area of a cross section of the lumen 42 is generally between 0.09 m 2 and 0.7 m 2. At the downstream end of the lumen 42, the peripheral wall 40 is provided with a downstream flange 49 extending transversely with respect to the axis A-A 'and defining a downstream region 50 for fixing on the upstream flange 36 of the downstream section 32.
    The fixing region 50 is fixed on the upstream flange 36 of the upstream section 30 by means of fixing elements 56 passing through the upstream flange 36 and the fixing region 50, to press the downstream region 50 against the upstream flange 36. At the upstream end of the lumen 42, the peripheral wall 40 is provided with an intermediate flange 51 defining an intermediate region 52 for fixing the transverse transverse wall 44.
    The transverse perforated wall 44 extends transversely to the upstream end of the lumen 42. It is here attached to the intermediate region 52. It is formed by a grid having a plurality of ribs and crossed crosspieces. It defines individual area openings substantially smaller than the area of the cross-section of the cushion 46 in its expanded configuration, for example less than 25% of the cross-section of the cushion 46 in its deployed configuration.
    The perforated transverse wall 44 is provided with an upstream flange 53 defining an upstream region 54 for fixing the module 16 on the downstream flange 34 of the upstream section 30.
    The upstream flange 53 of the perforated transverse wall 44 is fixed on one side to the intermediate fixing region 52 provided on the intermediate flange 51 of the peripheral wall 40 and on the other hand, on the downstream flange 34 of the upstream section 30. by means of fixing elements 56 passing through the downstream flange 34, the upstream region 54 and the intermediate attachment region 52.
    When present, the additional perforated wall 45 extends transversely to the downstream end of the lumen 42 at the downstream region of attachment 50. It is also formed by a grid having a plurality of ribs and crossed crosspieces. . It defines individual area openings substantially smaller than the cross-sectional area of the cushion 46 in its expanded configuration, for example less than 25% of the cross-section of the cushion 46 in its deployed configuration.
    The additional perforated wall 45 defines an additional transverse surface 57 for supporting the cushion 46 in the deployed configuration.
    In this example, the peripheral wall 40, the downstream flange 50, the additional perforated wall 45 and the intermediate flange 51 are made in one piece. The transverse wall is here attached to the intermediate flange 51.
    The airbag 46 in folded configuration and the inflation device 48 are received at rest in a housing 58 fixed in this example on the perforated transverse wall 44.
    The housing 58 is for example fixed in the center of the perforated wall 44. It projects axially in the upstream section 30. It opens upstream in the lumen 42 to allow the airbag 46 to deploy in the lumen 42.
    The airbag 46 is for example an airbag type cushion, similar to those used in the automotive industry. It is formed of a flexible sealed pouch folded into the casing 58 in folded configuration.
    Once inflated, it is able to completely fill at least one transverse section of the lumen 42 to transversely close the lumen 42. Advantageously, it is able to fill the lumen 42 substantially completely between the transverse perforated wall 44 and the additional transverse wall with openings. 45.
    The volume of the cushion 46 inflated and for example between 50 I and 200 I, in particular between 70 I and 160 I.
    The inflation device 48 is for example formed by a cartridge of pyrotechnic material (igniter and propellant, for example) or by a compressed gas cartridge or by a hybrid system uniting these two technologies.
    The inflation of the cushion 46 is suitable to be obtained in a rapid time, for example less than 150 ms, and in particular between 15 ms and 150 ms.
    The mounting of the quick shutter module 16 on the pipe 14 will now be described.
    Initially, the transverse wall 44, provided with the casing 58 containing the cushion 46 in folded configuration and the inflation device 48, is applied against the downstream flange 34 of the upstream section 30 by inserting the casing 58 into the central passage 38 of the upstream section 30. .
    Then, the peripheral wall 40 carrying the additional perforated transverse wall 45 is inserted between the transverse wall 44 and the upstream flange 36 of the downstream section 32.
    The fixing elements 56 are placed between the upstream flange 36 and the downstream region 50 on the one hand, and between the intermediate region 52, the upstream region 54 and the downstream flange 34 on the other hand, to immobilize the module. fast shutter 16 in position.
    The assembly and disassembly of the fast shutter module 16 is therefore simple to achieve between two pipe sections 30, 32, which facilitates its installation on existing ducts not provided with this type of safety device or on new sheaths. . Its disassembly after deployment of a cushion 46 for changing thereof is also relatively easy.
    The operation of the fast shutter module 16, during an incident, will now be described. The incident is for example an explosion generating an overpressure front 60 visible in FIG.
    Initially, when the incident is detected by the sensor 18, as shown in FIG. 1, the processing unit 20 generates a trigger signal that is transmitted to the inflation device 48.
    In a time of less than 150 ms, as illustrated in FIG. 4, the inflator 48 inflates the cushion 46 coming out of the casing 48 and completely fills at least one transverse section of the lumen 42, and preferably all the light 42 delimited. between the transverse perforated walls 44, 45 and the peripheral wall 40.
    The cushion 46 thus completely closes the pipe 14 by blocking the lumen 42 and preventing the passage of gas through the lumen 42 of the upstream section 30 to the downstream section 32
    In the case of an explosion, this is obtained well before the overpressure front 60 reaches the openings 24, as illustrated in FIG. 5. The protected space 12 thus remains spared by the overpressure front.
    The cushion 46 being waterproof or quasi-waterproof (cushion without hole or only with small hole), the pressure is maintained in it for longer than the duration of the explosion it undergoes.
    Once the incident is over, the fast shutter module 16 can be replaced without performing specific civil engineering work. The intervention cost is therefore minimal.
    In a variant shown in FIG. 6, the quick shutter module 16 has no additional transverse wall 45.
    The peripheral wall 40 defines a peripheral intermediate shoulder 70 which delimits the additional transverse surface 57 for supporting the cushion 46 in deployed configuration, while leaving a central region 72 of the lumen 42 clear. The peripheral intermediate shoulder 70 is defined between a downstream region 74 of the peripheral wall 40, of cross section having an area less than the cross sectional area of an upstream region 76 of the peripheral wall 40.
    The fast shutter module 16 further comprises an adapter 77 defining an adapter flange 78 intended to grip the flange 53 of the perforated transverse wall 44 against the intermediate flange 51 of the peripheral wall 40. The adapter 77 further defines an upstream flange 79 defining the upstream region 54 for fixing on the downstream flange 34 of the upstream section 30.
    In this example, the casing 58 containing the airbag 46 in folded configuration and the inflator 48, is also received in the lumen 42 where it protrudes.
    The operation of this fast shutter module 16 is moreover analogous to that described in FIGS. 2 and 3.
    In the variant shown in FIG. 7, the casing 58 containing the cushion 46 and the inflation device 48 is fixed outside the peripheral wall 40. The peripheral wall 40 defines a lateral passage 81 through which the cushion 46 unfolds. in the light 42.
    The operation of the fast shutter module 16 described in FIG. 7 is moreover analogous to that described in FIGS. 2 and 3.
    The rapid shutter module 16 shown in FIG. 8 differs from the module 16 visible in FIG. 7 in that the cushion 46 is a curtain cushion initially extending, in its folded configuration, over the entire width of the lumen 42. It is particularly well suited to rectangular section ducts. The operation of this module 16 is moreover analogous to that shown in FIGS. 2 and 3.
    In the variant shown in FIG. 9, the fast shutter module 16 differs from that shown in FIG. 7 in that the additional transverse wall 45 is formed by a solid shutter 80.
    The solid shutter 80 is for example metallic (stainless steel or aluminum) or carbon.
    The flap 80 is movable in the lumen 72 between an erased position and a transverse position of interposition in the lumen 72. It defines the additional transverse bearing surface 57 in the transverse position of interposition.
    In the example shown in FIG. 9, the flap 80 is articulated on the peripheral wall 40, for example in the vicinity of the downstream fixing region 50. It is adapted to pivot between the erased position, in which it is applied longitudinally against the peripheral wall 40 and the transverse position of interposition, in which it extends transversely through the lumen 42 to a transverse stop 82.
    In this example, the flap 80 in its erased position covers the lateral passage 81 defined in the peripheral wall 40 for the expansion of the cushion 46.
    In operation, the airbag 46 pushes the flap 80 from its erased position to its transverse position of interposition, during its inflation.
    In the variant shown in FIG. 10, the fast shutter module 16 comprises a plurality of parallel movable flaps 80, each being articulated about a transverse axis C-C '.
    The flaps 80 delimit between them in their erased position gas passage openings 90 through the lumen 72. As for the module 16 shown in FIG. 9, the flaps 80 move from their erased position to their transversal position of interposition during inflating the airbag 46.
    In a variant (not shown) of each of the previous embodiments, the perforated transverse wall 44 is carried by the peripheral wall 40 being in one piece with the peripheral wall 40. The peripheral wall 40 is thus free of intermediate flange 51.
    In another variant (not shown) of each of the embodiments, the additional perforated transverse wall 45 is attached to the peripheral wall 40 and forms a part distinct from the peripheral wall 40. The peripheral wall 40 then advantageously defines a downstream flange receiving in support of the additional perforated transverse wall 45 when the fixing elements 56 are put in place.
    Such an arrangement simplifies the maintenance of the module 16, particularly in the case where the wall 45 comprises one or more movable flaps 80.
    In a variant, not shown, the downstream fixing region 50 or the upstream region 54 for fixing the module 16 is fixed to a building structure and not to a pipe section.
    权利要求:
    Claims (14)
    [1" id="c-fr-0001]
    1. - Module (16) fast shutter pipe (14), comprising: - a first attachment region (50) to a first structure, in particular to a first section (30) of the pipe (14); - a second attachment region (54) to a second structure, in particular to a second section (32) of the pipe (14); - a peripheral wall (40) defining an inner lumen (42) extending between the first attachment region (50) and the second attachment region (54); characterized in that it comprises: - a perforated transverse wall (44), arranged transversely to the light (42); an airbag (46) capable of being deployed in the lumen (42) from a contracted configuration towards an expanded configuration resting on the transverse perforated wall (44) for closing off at least one cross section of the lumen (42); - A device for inflating (48) the airbag (46), adapted to trigger on receiving a trigger signal.
    [2" id="c-fr-0002]
    2. - Module (16) according to claim 1, comprising at least one additional transverse surface (57) of support of the airbag (46) in deployed configuration, extending transversely to the light (42) to the opposite the perforated transverse wall (44).
    [3" id="c-fr-0003]
    3. - Module (16) according to claim 2, comprising an additional transverse wall (45) perforated defining the additional transverse bearing surface (57).
    [4" id="c-fr-0004]
    4. - Module (16) according to claim 2, wherein the peripheral wall (40) defines a shoulder (70) defining the additional transverse bearing surface (57).
    [5" id="c-fr-0005]
    5. - Module (16) according to claim 2, comprising at least one flap (80) movable in the lumen (42) between an erased position and a transverse position of interposition in the lumen (42), the flap (80) defining the additional transverse bearing surface (57) in the transverse position of interposition.
    [6" id="c-fr-0006]
    6. - Module (16) according to any one of the preceding claims, wherein the airbag (46) in contracted configuration extends into the lumen (42).
    [7" id="c-fr-0007]
    7. - Module (16) according to claim 6, wherein the airbag (46) contracted configuration is carried by the perforated transverse wall (44).
    [8" id="c-fr-0008]
    8. - Module (16) according to any one of claims 1 to 5, wherein the airbag (46) in contracted configuration extends out of the lumen (42), the peripheral wall (40) defining a lateral passage (81) for expanding the airbag (46).
    [9" id="c-fr-0009]
    9. - Module (16) according to claim 8, wherein the airbag (46) in expanded configuration forms a curtain closing the transverse light (42).
    [10" id="c-fr-0010]
    The module (16) according to any of the preceding claims, comprising a first flange (49) defining the first attachment region (50) and a second flange (53; 79) defining the second attachment region (54). .
    [11" id="c-fr-0011]
    11. - Module (16) according to any one of the preceding claims, wherein the inflation device (48) comprises a pressurized gas cartridge and / or a set of chemical generation of gas under pressure.
    [12" id="c-fr-0012]
    12. - Line (14) for circulating a gas in a fluid exploitation installation (10), comprising: - a first section (30) of pipe (14); - A module (16) according to any one of the preceding claims, fixed on the first pipe section (30) and advantageously interposed between the first section (30) of pipe (14) and a second pipe section (32) ( 14).
    [13" id="c-fr-0013]
    13. - Installation (10) operating fluid, comprising: - at least a first space (12) to be protected during an incident; - a pipe (14) according to claim 12, opening into the first space (12); at least one incident detection sensor (18) connected to the rapid inflator (48) and a processing unit (20) connected to each sensor (18) and to the fast shutter module (16) for producing a trigger signal of the inflator (48) upon detection of an incident.
    [14" id="c-fr-0014]
    14. - Method for securing a pipe (14) for circulating a gas in a fluid exploitation installation (10), comprising the following steps: - supplying a pipe (14) according to the claim 12, the airbag (46) occupying its contracted configuration, the gas flowing through the lumen (42); - On receipt of a trigger signal, activation of the inflation device (48); - Inflation of the airbag (46) by the inflator (48) to reach the deployed configuration bearing on the perforated transverse wall (44); - closing by the airbag (46) of at least one cross section of the lumen (42), preventing the passage of gas through the lumen (42).
    类似技术:
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    同族专利:
    公开号 | 公开日
    FR3052842B1|2018-07-13|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US4522116A|1984-03-12|1985-06-11|Tartaglino Jerry J|Selective zone isolation for HVAC system|
    US5277397A|1993-02-09|1994-01-11|Tartaglino Jerry J|Bladder assembly for control of fluid flow and method of its fabrication|
    DE19515595A1|1995-05-02|1996-11-07|Karl Dr Hubert|Method for sealing or shutting off pipeline using sensor and charge-activated balloon|
    US6217441B1|1999-03-30|2001-04-17|Honeywell International Inc.|Method and apparatus for sealing building ductwork during chemical or biological attack|
    US20020079470A1|2000-12-22|2002-06-27|Taiwan Semiconductor Manufacturing Co., Ltd.|Flow control valve incorporating an inflatable bag|
    CN103994252A|2014-05-05|2014-08-20|威乐水泵系统有限公司|Valve|CN109538791A|2018-10-19|2019-03-29|湖州师范学院|A kind of umbrella pushes away cavity clearing bellows runoff investigation mechanism|
    CN110762327A|2019-10-21|2020-02-07|苏军|Auxiliary water plugging device for repairing water leakage pipeline|
    CN111963812A|2020-10-26|2020-11-20|烟台市特种设备检验研究院|Plugging device for pressure pipeline|
    CN112066271A|2020-07-29|2020-12-11|中国市政工程华北设计研究总院有限公司|Pipeline leakage point detection device and detection method thereof|
    法律状态:
    2017-06-29| PLFP| Fee payment|Year of fee payment: 2 |
    2017-12-22| PLSC| Search report ready|Effective date: 20171222 |
    2018-06-26| PLFP| Fee payment|Year of fee payment: 3 |
    2020-06-26| PLFP| Fee payment|Year of fee payment: 5 |
    2021-05-13| PLFP| Fee payment|Year of fee payment: 6 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1655585|2016-06-16|
    FR1655585A|FR3052842B1|2016-06-16|2016-06-16|FAST PIPE FASTER MODULE, DRIVING, INSTALLATION AND METHOD THEREOF|FR1655585A| FR3052842B1|2016-06-16|2016-06-16|FAST PIPE FASTER MODULE, DRIVING, INSTALLATION AND METHOD THEREOF|
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