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WO2017050448A1 - Système de conduit pour un élément de canalisation d'une installation technique de traitement, système de détection d'une fuite de fluide de traitement, et élément de canalisation de l'installation technique de traitement - Google Patents

Système de conduit pour un élément de canalisation d'une installation technique de traitement, système de détection d'une fuite de fluide de traitement, et élément de canalisation de l'installation technique de traitement Download PDF

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Publication number
WO2017050448A1
WO2017050448A1 PCT/EP2016/065413 EP2016065413W WO2017050448A1 WO 2017050448 A1 WO2017050448 A1 WO 2017050448A1 EP 2016065413 W EP2016065413 W EP 2016065413W WO 2017050448 A1 WO2017050448 A1 WO 2017050448A1
Authority
WO
WIPO (PCT)
Prior art keywords
channel
detection
channel system
liner
line component
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/EP2016/065413
Other languages
German (de)
English (en)
Inventor
Marcus Miertz
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.)
Pfeiffer Chemie Armaturenbau GmbH
Original Assignee
Pfeiffer Chemie Armaturenbau GmbH
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 Pfeiffer Chemie Armaturenbau GmbH filed Critical Pfeiffer Chemie Armaturenbau GmbH
Priority to EP16736032.0A priority Critical patent/EP3353519A1/fr
Publication of WO2017050448A1 publication Critical patent/WO2017050448A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
    • G01M3/16—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using electric detection means
    • G01M3/18—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using electric detection means for pipes, cables or tubes; for pipe joints or seals; for valves; for welds; for containers, e.g. radiators
    • 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
    • G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
    • G01M3/20—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material
    • G01M3/22—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material for pipes, cables or tubes; for pipe joints or seals; for valves; for welds; for containers, e.g. radiators

Definitions

  • the invention relates to a duct system, in particular for detecting a process medium leakage between a line component and a liner lining the inside of the line component, such as a plastic lining. Furthermore, the invention relates to a system for detecting the process media leakage that may result between the liner and the valve component due to damage to the liner. Moreover, the invention relates to a line component as such, which comprises the channel system according to the invention and / or the detection system according to the invention.
  • a protective lining such as the liner, is known from German Utility Model GM 77 07 794.
  • the liner is formed by a plate-like plastic layer of polytetrafluoroethylene (PTFE), with the aim that the housing of the conductive component forming material, often metal, not in direct contact with the most corrosion-resistant process media, such as liquid chlorine gas, cryogenic media, etc ., come.
  • the piping component is, for example, a ball valve, whereby other piping components, such as piping itself, valves, throttles, linear or rotary valves, pig units or the like, can be provided with a protective lining.
  • the protective lining has also been further developed with regard to the material to be used, with thermoplastic plastics, such as PFA, now being supposed to completely line the process-fluid-conducting inside of the pipeline.
  • a line component such as a control valve, a ball valve, a linear or pivot valve, a pig unit, etc.
  • a channel system in particular for Leckagedetelction and / or construction of a barrier gas layer, for a line component, such as a conduit, a control valve, such as a butterfly valve, a ball valve, a throttle valve, a linear or rotary valve, a pig unit or the like, a procedural Plant, such as a petrochemical plant or a food plant, such as a brewery, provided.
  • a control valve such as a butterfly valve, a ball valve, a throttle valve, a linear or rotary valve, a pig unit or the like
  • a procedural Plant such as a petrochemical plant or a food plant, such as a brewery
  • the particular use of the invention relates to process engineering plants in which corrosion-prone media, such as liquid chlorine gas, cryogenic media, etc. are processed.
  • the channel system according to the invention is intended to be formed between an inner side of the line component substantially conducting the process flow of the process medium and a liner lining the inner side, such as a protective lining, in particular made of plastic such as PTFE.
  • a liner lining the inner side such as a protective lining, in particular made of plastic such as PTFE.
  • the inside of the line component is usually formed by the housing of the line component, which is often formed for cost reasons of metal, such as cast metal.
  • the liner serves to protect the inside of the housing from the aggressive process media.
  • the inner surfaces of the line component to be provided with the lining which can be injured due to the flow conditions within the pipe component with the process medium.
  • the channel system according to the invention is to be formed in the intermediate region between the liner and the line component in such a way, starting from or at least over a predetermined location of the liner which is susceptible to damage, to at least one detection outlet of the line component, in particular through the housing structure of the line component, and / or or toward a sealed or sealable detection cavity of the conduit component such that a continuous, uninterrupted fluidic connection is formed from the predetermined damage-susceptible location across the conduit system to the at least one detection outlet and / or to the at least one detection cavity.
  • the process medium reaches the intermediate region between the liner and the inside of the pipe component, the leakage process medium enters the channel system, along which it can flow out to the associated outlet and / or to the associated detection cavity.
  • the channel system is to be arranged, in particular, at the points at which experience shows that the likelihood of the liner being damaged is greatest.
  • the concentration of the Kanalwegêt can be increased, so that is proposed as a general rule, at any point of a channel line a minimum distance to an adjacent channel distance not 1 cm, 2 cm, 3 cm or 5 cm or 10 cm to be depending on the dimensioning of the corresponding line component.
  • the channel system has a continuous fluid connection to the detection point, namely to provide the detection outlet or the detection cavity, so that the channel path is to form as continuously as possible.
  • the channel path is to be formed along an extension with a constant cross section.
  • the channel system according to the invention comprises at least one channel trunk, which opens into the at least one outlet and / or into the at least one detection cavity.
  • the channel trunk may have a larger channel cross-section than the channel branches with channel branches which may possibly adjoin the channel trunk and which may fan out peripherally for surface detection of the intermediate area between the liner and the line component. In this way, a large-area detection of the intermediate region can be realized.
  • the at least one channel stem has at least one, preferably a plurality of branches from the at least one branch, in particular from the plurality of branches, wherein two or more channel branches may run away, thereby forming a peripheral branch structure distal from the detection outlet and / or the detection cavity , which allows a large-area detection.
  • the channel trunk may have a rectilinear extent in the circumferential direction or in the axial direction of the line component, it being understood that the channel trunk may also be curved if the necessary ducting of the channel system towards a particular point susceptible to damage requires it.
  • a plurality of detection outlets and / or detection cavities are provided in the conduit component.
  • Each detection outlet and / or each detection cavity is assigned a trunk channel of the channel system in order to avoid a short-circuit function when removing the leakage process medium. It may be advantageous that in a multi-branch branch from one channel trunk, a channel bridge to another channel trunk is advantageous to allow a shorter withdrawal path to a separate Detektierauslass and / or Detektierhohlraum.
  • channel trunks of which preferably a plurality of channel branches branch off, opening into one and the same detection outlet and / or detection hollow space.
  • the channel trunk and, if appropriate, channel branches can end in a respective channel bag alley, wherein each dead end channel end is coupled to a pressure sink at the detection outlet and / or detection cavity to ensure that also process medium entering the dead end channel channel can be diverted.
  • the channel system according to the invention has several with the at least one detection outlet and / or detection cavity in fluid Compound, dead-end, peripheral channel ends, all of which are fluidly associated with a detection outlet and / or detection cavity.
  • one or more channel ends of one channel end can be associated with two or more detection outlets and / or detection cavities.
  • the channel system according to the invention is formed in particular exclusively on the inside of the line component, preferably on the inside of the housing of the line component, and / or in particular exclusively on the outside of the liner facing the inside in groove form.
  • the groove shape facilitates entry of the process medium into the channel system once it has reached the intermediate region between the liner and the conduit component.
  • it forms in each case opposite boundary surfaces of the liner or of the line component, in order to enable a channel-like closing of the channel system, with production-related gaps always opening up, along which the leakage process medium flows and can reach the groove-like channel structure.
  • the groove-shaped channel system is open on the line component side or on the liner side, in particular along the entire extension of the channel system.
  • the leakage process medium which collects in the intermediate region, can penetrate into the channel system and be discharged to the pressure sink.
  • the channel system is designed, in particular dimensioned such that a pressure difference along the entire Kanalwegrange, from the peripheral channel ends to the detection point, so the pressure sink, through the at least one Detektierauslass and / or by the at least one Detection cavity is formed is achieved.
  • the channel system at least partially in cross-section completely circumferentially closed within the components, the liner and / or the inner side of the pipe component forming wall, be formed. This may be necessary, for example, to make shortcuts to particular other channel sections to shorten the path to a detection site.
  • the channel system as described above, mostly grooved or groove-shaped, ie with an open towards the opposite device side.
  • the channel system in particular in the region of the at least one detection outlet and / or the at least one detection cavity, has a device for detecting process medium, in particular a process medium concentration measuring device.
  • a special process media sensor can be used, which can determine the concentration of the process medium absolute, the change in the process medium concentration over time.
  • the detection device preferably has a sensor and / or at least one signal output, via which a detection signal, such as an emergency signal overlapping a concentration limit, can be delivered, in particular to an electronic control unit of the process plant, in particular a positioner or another receiver.
  • the control electronics can also be part of the channel system, in particular process media sensors.
  • the detection device can be equipped with a microprocessor, which in particular carries out a process medium concentration monitoring continuously, intermittently or in the case of manual retrieval.
  • the microprocessor may be connected to a memory which, on the one hand, stores the acquired data and, on the other hand, can record externally received desired data.
  • the data memory is to store concentration thresholds which, when exceeded, which comparison is carried out by the microprocessor, an emergency signal is to be output.
  • the detection device is formed by a container which is preferably transparent or at least has a transparent viewing window.
  • the container is fluid tightly attached to the at least one detection outlet and preferably filled with a signal fluid such as ammonia.
  • the signal fluid may be configured to change its color and / or its contrast when in contact with the process medium or when the process medium concentration within the container exceeds a particular predetermined concentration threshold.
  • the channel system according to the invention can in particular be designed to be connected to a barrier gas source, wherein preferably at least one detection outlet can be used as connection point.
  • the barrier gas source can be realized, for example, by an electrically operating barrier gas generator, which comprises a release valve, which can be actuated in particular by a line-specific electronic component.
  • the barrier gas generator may be adapted to inject into the duct system a sealing gas, such as Inert gas, such as nitrogen, to initiate to form a barrier gas layer between the inside of the line component and the outside of the liner.
  • the barrier gas layer can form over the entire surface and continuously between the channel systems and is interrupted only in particular punctiform and line-wise, where the liner rests against the line component.
  • the introduced barrier gas serves primarily to seal a leakage or damage site in the liner.
  • the barrier gas barrier prevents process fluid from migrating beyond the point of leakage or damage. If the barrier gas always has a constant pressure or flow behavior with an undamaged liner, a leak can also be detected via a pressure change or via a changed flow behavior.
  • the dimensioning of the channel system, in particular of the individual channel strands is substantially constant along the entire channel system.
  • a minimum depth for the channel strands may be at least 0.4 mm, 0.5 mm or 1 mm and at most 5 mm.
  • a channel system in particular channel paths of the channel system there are arranged in particular dense, where the liner is designed weakened particular construction.
  • the detection outlet is arranged such that it passes from the inside to the outside of the line component, in particular into the closable detection cavity, which serves for example for receiving a valve packing.
  • a damaged area of the liner is formed by a flow cross-sectional taper of the pipe component, such as a projection, a step, a step.
  • the channel system may be so branched and fanned out to assure a high density, which is determined such that at each channel location, an adjacent channel path at a minimum distance of less than 1 cm, 2 cm,
  • the invention relates to a line component, such as a conduit, a control valve, a ball valve, a throttle valve, a linear or swing valve, a molar ch necessarily or the like, a process engineering plant, such as a petrochemical process plant, a food processing plant, such as a brewery or the like.
  • the process plant can process in particular liquid chlorine gas or cryogenic medium.
  • the conduit component has an inner side facing a process medium and a liner lining the inside, such as a protective lining, and a channel system according to the invention, which is formed in particular on the inside of the conduit component and / or on the outside of the liner.
  • the invention relates to a system for detecting a leakage process medium between an inside of a particular above-mentioned line component according to the invention and a liner lining the inside of the line component, such as a protective lining.
  • the detection system comprises a channel system according to the invention as well as a process medium detection device, as arranged on the at least one detection outlet and / or on the at least one detection cavity.
  • Figure 1 is a plan view of a line component in the form of a butterfly valve closed valve flap.
  • FIG. 2 shows a cross-sectional view of the line component along the section line II - II according to FIG. 1;
  • FIG. 3 shows a detail cross-sectional view of the line component along the section line X-X in an embodiment of a channel system according to the invention
  • FIG. 4 shows a detail view corresponding to FIG. 3 in a second embodiment
  • Fig. 5 is a detail cross-sectional view of FIG. 3 and 4 in a third embodiment and Fig. 6 is an enlarged cross-sectional view of FIG. 2 with a detection system according to the invention.
  • a erfmdungs proper line component is shown in detail and formed as a valve with throttle. It should be understood that this valve component is only an example, and other piping components, such as control valves, conduits, etc., can accommodate the subject invention.
  • the valve 1 comprises a valve housing 3, which has a reinforced bearing portion 5 for supporting the throttle shaft 7, via which the flap 11 is actuated.
  • a guide bush 13 is provided, to which a cavity 15 connects in the axial direction, in which a valve packing in the form of sealing sleeves 17 is arranged.
  • Disc springs 21 act on the valve packing in the axial direction.
  • the seat for the valve packing is partially formed by a protective lining 23 made of PTFE, wherein the protective lining 23 also extends around inside sections of the valve housing 5.
  • the protective lining 23 serves to protect the inside, which would be acted upon by the process medium, not shown, and / or exposed surfaces in front of the process medium. As such, the protective liner 23 conforms to the inside of the housing of the conduit component (at 25).
  • the process medium in particular on the protective lining 23, partially changes the state of aggregation and can become gaseous, whereby a diffusion and permeation through the lining 23 to the inside of the housing 3 of the line components, which is often formed of metal, is accompanied.
  • the subject matter of the invention involves detecting process medium collecting in the intermediate region 31 between the inner side 33 of the housing 3 of the line component and the protective lining 23, thereby detecting too early a too high concentration of process medium in the transition region. In this way, a corrosion stage can be detected early and appropriate maintenance work can be made low cost.
  • an inventive channel system 41 is provided which is groove-like or groove-shaped on the inside of the housing section 3 incorporated into the line component.
  • the channel system is shown in FIG. 3 with two channel curves 43, which rotate helically to the axial direction A, so that a channel strip in the embodiment according to FIG. 3 is formed.
  • the two channel strips 43 are also separate and may open into a common or separate cavity (eg, 15) where a detecting device may be located. This will be explained later with reference to FIG. 6.
  • the channel system 41 extends to the floo space 15, in which, for example, an electrical detection device is arranged, which measures the concentration in the fluid arriving above the channel system 41 and, if necessary, passes on.
  • an outlet can be arranged in the housing 3, so that a detection device can also be arranged outside the line component.
  • the cavity 15 has the advantage that a separate seal with regard to the avoidance of the escape of a process medium outside the housing 3 of the line component is prevented.
  • the channel system 41 is arranged in particular at a weakened position, in particular concavely curved portion of the protective lining 23, which is by design. It is particularly in the selection of the positioning of the channels 43 of the channel system 41 of advantage to arrange them where there is a high vulnerability of the protective lining 23.
  • the vulnerability can be designed especially where the protective lining is particularly thin-walled, and this thin-walled construction.
  • radially protruding projections within the process medium leading duct of the line component may be a place to a conduit system, in particular in a branch, not shown, is necessary in order to cover as large areas of the transition region between the protective lining and the inside of the housing of the line component can detect.
  • FIG. 4 also represents the sectional view X-X, but comprises a different channel system 51 with more closely spaced channels 53 also extending helically to the axial direction A.
  • the channels 53 may also be discrete channels that are parallel to each other and terminate in a channel trunk (not shown) that extends toward the detection cavity 15 or the outlet.
  • the groove-like channels are formed with the same width b as in the embodiment according to FIG. 3, but the depth T varies. The depth T can vary between 1 mm and 5 mm or can also be made constant.
  • FIG. 5 A further embodiment of a channel system according to the invention is shown in FIG. 5, which is particularly suitable for detecting large-area detection areas.
  • the channel system 61 according to FIG. 5 has a significantly greater width of at least 2 mm, preferably 5 mm to 15 mm, in particular about 10 mm.
  • the groove-shaped channel is formed with a depth T of about 0.5 mm to 2 mm, preferably 1 mm, wherein the channel bottom is flat smooth.
  • the channel system 61 which is shown in Fig. 5 with two channels 63, can extend helically with respect to the axial direction A, wherein alternatively two independent, parallel channel sections can be provided, which can lead to a further, even wider channel trunk.
  • a support plate can be incorporated into the inside of the housing structure, which represents a perforated plate, for example, so that an inlet of the process medium into the channels 63 is made possible.
  • the protective plate serves to support the protective lining, so that it does not enter the channel passage and thus causes a "clogging" of the channel passage and on the other hand high tensile and compressive stresses due to the deformation of the indentation are avoided.
  • a stepped recess can be made, which is dimensioned such that the support plate is well fitted.
  • the channels 63 are provided as a further recess, so that a kind of stepped recess portion is formed by the recording of the support plate and the channel structure.
  • a female connector 71 is introduced, on which a plug, not shown, can be screwed.
  • the plug can be connected to a detection device, which is designed, for example, to detect the concentration of process medium.
  • Other detection devices may be attached to the terminal 71.
  • the port 71 passes through a channel 73, which extends at an angle, into the detection chamber 15, in which the above-mentioned duct system 41, 51 open.
  • the port 71 can also be used to connect a barrier gas source through which sealing gas can be introduced into the duct system.
  • the barrier gas source may be formed, for example, by a barrier gas generator that generates barrier gas, such as an inert gas, such as nitrogen, that has a particular low reactivity with the process medium.
  • barrier gas such as an inert gas, such as nitrogen
  • the sealing gas which enters the intermediate region 31 via the channel system 41, 51 and 61, forces the possibly permeated / diffused process medium, the gas, from away from the housing section to be protected. Even small damage openings on the protective lining 23 are virtually sealed by the provision of an inert gas layer.
  • a sealing gas consumer may be provided, which measures the consumption of sealing gas. If, for example, a sealing gas penetrates into the line component via a damage opening, this can be detected by the detection device, so that in this way too rapid maintenance of the corresponding line component can be accompanied by the channel system.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Examining Or Testing Airtightness (AREA)

Abstract

L'invention concerne un système de conduit servant en particulier à la détection de fuites et/ou à la création d'une couche de gaz de blocage pour un élément de canalisation, par exemple un tube de canalisation, une soupape de réglage, un robinet à boisseau sphérique, un clapet d'étranglement, une soupape pivotante ou linéaire, une unité de raclage ou similaire d'une installation technique de traitement, en particulier pour le traitement de fluides porteurs de corrosion, par exemple chlore gazeux, fluide cryogénique, etc. Le système de conduit est réalisé entre un côté intérieur de l'élément de canalisation guidant sensiblement l'écoulement du fluide de traitement et une chemise garnissant le côté intérieur, en particulier une garniture en matière plastique, et s'étend à partir ou au moins sur une zone de la chemise susceptible d'être endommagée vers une sortie de détection de l'élément de canalisation et/ou au moins une cavité de détection ménagée à l'intérieur de l'élément de canalisation, accessible à partir du côté extérieur de l'élément de canalisation, de telle sorte qu'est établie une communication fluidique continue à partir de la zone susceptible d'être endommagée en direction de la ou des sorties de détection et/ou de la ou des cavités de détection par l'intermédiaire du système de conduit.
PCT/EP2016/065413 2015-09-23 2016-06-30 Système de conduit pour un élément de canalisation d'une installation technique de traitement, système de détection d'une fuite de fluide de traitement, et élément de canalisation de l'installation technique de traitement Ceased WO2017050448A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP16736032.0A EP3353519A1 (fr) 2015-09-23 2016-06-30 Système de conduit pour un élément de canalisation d'une installation technique de traitement, système de détection d'une fuite de fluide de traitement, et élément de canalisation de l'installation technique de traitement

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015012301.7A DE102015012301B4 (de) 2015-09-23 2015-09-23 Kanalsystem für eine Leitungskomponente einer prozesstechnischen Anlage, System zum Detektieren einer Prozessmediumsleckage und Leitungskomponente der prozesstechnischen Anlage
DE102015012301.7 2015-09-23

Publications (1)

Publication Number Publication Date
WO2017050448A1 true WO2017050448A1 (fr) 2017-03-30

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PCT/EP2016/065413 Ceased WO2017050448A1 (fr) 2015-09-23 2016-06-30 Système de conduit pour un élément de canalisation d'une installation technique de traitement, système de détection d'une fuite de fluide de traitement, et élément de canalisation de l'installation technique de traitement

Country Status (3)

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EP (1) EP3353519A1 (fr)
DE (1) DE102015012301B4 (fr)
WO (1) WO2017050448A1 (fr)

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CN107253048A (zh) * 2017-06-19 2017-10-17 合肥球球科技有限公司 汽车管道的气密性检测及管口保持圈安装一体工装
WO2019038197A1 (fr) 2017-08-21 2019-02-28 European Molecular Biology Laboratory Polypeptide de transposase amélioré et utilisations de celui-ci
WO2020169673A1 (fr) 2019-02-19 2020-08-27 European Molecular Biology Laboratory Transposase de pénétration cellulaire
CN114459706A (zh) * 2022-02-09 2022-05-10 武汉鼎业环保工程技术有限公司 一种可调式防煤气泄漏装置

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CN114002034A (zh) * 2021-11-04 2022-02-01 中核武汉核电运行技术股份有限公司 管材裂纹制作系统

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DE202008011406U1 (de) 2007-12-20 2009-06-18 Xomox International Gmbh & Co Ventil

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JPS5524268A (en) 1978-08-11 1980-02-21 Doryokuro Kakunenryo Coating method for sodium pipings in fast

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US1962168A (en) * 1930-07-30 1934-06-12 Smith Corp A O Lined pressure vessel
US4259553A (en) * 1978-06-14 1981-03-31 Bridgestone Tire Company Limited Transport hose with leak detecting structure
US5072622A (en) * 1990-06-04 1991-12-17 Roach Max J Pipeline monitoring and leak containment system and apparatus therefor
US6067844A (en) * 1997-08-15 2000-05-30 Shell Oil Company Nondestructive method for detection of defects and the condition of liners in polymer-lined pipes and equipment
DE10114558A1 (de) 2000-07-04 2002-01-17 Josef Nemetz Kugelhahn mit einem mit Kunststoff ausgekleideten Kugelhahneinsatz
US20040177891A1 (en) * 2003-03-11 2004-09-16 Spaolonzi Mauricio Pinto Leak detection system and method for offshore hose lines
DE202008011406U1 (de) 2007-12-20 2009-06-18 Xomox International Gmbh & Co Ventil

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107253048A (zh) * 2017-06-19 2017-10-17 合肥球球科技有限公司 汽车管道的气密性检测及管口保持圈安装一体工装
CN107253048B (zh) * 2017-06-19 2019-06-04 十堰市倍力汽车管业有限公司 汽车管道的气密性检测及管口保持圈安装一体工装
WO2019038197A1 (fr) 2017-08-21 2019-02-28 European Molecular Biology Laboratory Polypeptide de transposase amélioré et utilisations de celui-ci
WO2020169673A1 (fr) 2019-02-19 2020-08-27 European Molecular Biology Laboratory Transposase de pénétration cellulaire
CN114459706A (zh) * 2022-02-09 2022-05-10 武汉鼎业环保工程技术有限公司 一种可调式防煤气泄漏装置

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