FR2902857A1 - Coaxial tube assembling device for transporting fluid e.g. natural gas, has part housed in counterbore that is formed in one mounting clip, and supported against base and on erected circular surface of counterbore - Google Patents
Coaxial tube assembling device for transporting fluid e.g. natural gas, has part housed in counterbore that is formed in one mounting clip, and supported against base and on erected circular surface of counterbore Download PDFInfo
- Publication number
- FR2902857A1 FR2902857A1 FR0652655A FR0652655A FR2902857A1 FR 2902857 A1 FR2902857 A1 FR 2902857A1 FR 0652655 A FR0652655 A FR 0652655A FR 0652655 A FR0652655 A FR 0652655A FR 2902857 A1 FR2902857 A1 FR 2902857A1
- Authority
- FR
- France
- Prior art keywords
- counterbore
- fluid
- flanges
- assembly device
- housed
- 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.)
- Granted
Links
- 239000012530 fluid Substances 0.000 title claims abstract description 29
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 12
- 239000003345 natural gas Substances 0.000 title claims abstract description 6
- 229920001971 elastomer Polymers 0.000 claims abstract description 4
- 239000000806 elastomer Substances 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims abstract description 3
- 239000002184 metal Substances 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 238000011144 upstream manufacturing Methods 0.000 description 4
- 230000000712 assembly Effects 0.000 description 3
- 238000000429 assembly Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 239000013013 elastic material Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L23/00—Flanged joints
- F16L23/02—Flanged joints the flanges being connected by members tensioned axially
- F16L23/024—Flanged joints the flanges being connected by members tensioned axially characterised by how the flanges are joined to, or form an extension of, the pipes
- F16L23/028—Flanged joints the flanges being connected by members tensioned axially characterised by how the flanges are joined to, or form an extension of, the pipes the flanges being held against a shoulder
- F16L23/0283—Flanged joints the flanges being connected by members tensioned axially characterised by how the flanges are joined to, or form an extension of, the pipes the flanges being held against a shoulder the collar being integral with the pipe
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L23/00—Flanged joints
- F16L23/02—Flanged joints the flanges being connected by members tensioned axially
- F16L23/024—Flanged joints the flanges being connected by members tensioned axially characterised by how the flanges are joined to, or form an extension of, the pipes
- F16L23/026—Flanged joints the flanges being connected by members tensioned axially characterised by how the flanges are joined to, or form an extension of, the pipes by welding
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/02—Energy absorbers; Noise absorbers
- F16L55/027—Throttle passages
- F16L55/02709—Throttle passages in the form of perforated plates
- F16L55/02718—Throttle passages in the form of perforated plates placed transversely
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Flanged Joints, Insulating Joints, And Other Joints (AREA)
Abstract
Description
"Dispositif d'assemblage de deux canalisations destinées au transport d'un"Device for joining two pipes intended for the transport of a
fluide et d'une pièce interposée entre ces canalisations". fluid and a part interposed between these pipes ".
La présente invention concerne le domaine technique des canalisations destinées au transport de fluide et notamment de gaz à forte pression et se rapporte plus particulièrement à un dispositif d'assemblage de deux canalisations et d'une pièce interposée entre ces dernières. The present invention relates to the technical field of pipes for the transport of fluid and in particular high pressure gas and relates more particularly to a device for assembling two pipes and a part interposed between them.
La figure 1 représente un dispositif connu d'assemblage 1 de canalisations coaxiales destinées au transport d'un fluide tel qu'un gaz naturel et d'une pièce 20 interposée entre les deux canalisations sensiblement perpendiculairement à la direction d'écoulement du fluide et pouvant être traversée par ce fluide. Chaque canalisation comprend un tube 2,2' et une bride de fixation 10,10' à l'extrémité 5,5' de chaque tube 2,2'. Les brides de fixation 10,10' sont assemblées les unes aux autres et de part et d'autre de la pièce 20 par des moyens de serrage ou de blocage 6 constitués par exemple par des ensembles à tiges filetées 7 et écrous 8,8'. Un joint annulaire d'étanchéité 24,24' est interposé entre chaque bride de fixations 10,10' et la pièce 20. Toutefois, si ce type de dispositif d'assemblage est largement employé dans les montages destinés au transport de fluide, il présente une construction complexe nécessitant plusieurs joints d'étanchéité. Or dans de tels montages, et particulièrement dans le cas de gaz à forte pression, les joints sont à éviter car ils augmentent le risque de fuite et diminuent la précision de la coopération des éléments constitutifs de l'assemblage. De plus, la pièce 20 est soumise à la pression interne de la tuyauterie et impose ainsi une résistance à l'écoulement du fluide qui est à éviter. FIG. 1 represents a known assembly device 1 for coaxial pipes intended for the transport of a fluid such as a natural gas and a part 20 interposed between the two pipes substantially perpendicular to the direction of flow of the fluid and capable of to be traversed by this fluid. Each duct comprises a tube 2.2 'and a fastening flange 10, 10' at the end 5, 5 'of each tube 2, 2'. The fastening flanges 10, 10 'are assembled together and on either side of the part 20 by clamping or locking means 6 constituted for example by threaded rod assemblies 7 and nuts 8, 8'. . An annular sealing gasket 24, 24 'is interposed between each fastening flange 10, 10' and the part 20. However, if this type of assembly device is widely used in assemblies intended for the transport of fluid, it presents a complex construction requiring several seals. However in such assemblies, and particularly in the case of high pressure gas, the joints are to be avoided because they increase the risk of leakage and reduce the accuracy of the cooperation of the components of the assembly. In addition, the piece 20 is subjected to the internal pressure of the pipe and thus imposes resistance to the flow of fluid that is to be avoided.
Le but de la présente invention est de remédier à ces inconvénients et de proposer un dispositif d'assemblage de deux tubes coaxiaux à brides de fixation destinés au transport d'un fluide tel qu'un gaz naturel et d'une pièce interposée entre les deux brides de fixation sensiblement perpendiculairement à la direction d'écoulement du fluide et pouvant être traversé par le fluide, caractérisé en ce que la pièce est logée dans au moins un lamage réalisé dans l'une des deux brides de fixation. Selon une autre caractéristique de l'invention, le dispositif d'assemblage comprend un lamage unique réalisé dans la bride de fixation, le lamage ayant une profondeur sensiblement égale à l'épaisseur de la pièce. Selon une autre caractéristique de l'invention, un joint annulaire d'étanchéité est interposé entre les deux brides de fixation concentriquement au lamage. Selon une autre caractéristique de l'invention, le joint annulaire d'étanchéité est logé dans deux gorges annulaires réalisées respectivement dans les deux brides de fixation. Selon une autre caractéristique de l'invention, le joint annulaire d'étanchéité est un joint métallique 20 torique. Selon une autre caractéristique de l'invention, un joint annulaire, en un matériau élastiquement déformable tel que l'élastomère, est interposé entre la pièce logée dans la bride de fixation et la face de l'autre bride de fixation 25 située en regard de cette pièce. Selon une autre caractéristique de l'invention, la bride de fixation comportant le lamage est situé en aval de l'écoulement du fluide dans les deux tubes coaxiaux assemblés. 30 Selon une autre caractéristique de l'invention, les deux brides de fixation sont solidaires respectivement des deux extrémités des tubes coaxiaux. Selon une autre caractéristique de l'invention, la pièce est constituée d'une plaque circulaire. 35 Selon une autre caractéristique de l'invention, la pièce est un diaphragme de comptage ou un conditionneur de débit ou un limiteur de débit du fluide. The object of the present invention is to overcome these drawbacks and to propose a device for assembling two coaxial tubes with fixing flanges intended for the transport of a fluid such as a natural gas and of a part interposed between the two fastening flanges substantially perpendicular to the direction of flow of the fluid and capable of being traversed by the fluid, characterized in that the part is housed in at least one countersink formed in one of the two fastening flanges. According to another characteristic of the invention, the assembly device comprises a single counterbore made in the fastening flange, the countersink having a depth substantially equal to the thickness of the part. According to another characteristic of the invention, an annular seal is interposed between the two fastening flanges concentrically to the counterbore. According to another characteristic of the invention, the annular seal is housed in two annular grooves respectively formed in the two attachment flanges. According to another characteristic of the invention, the annular seal is a toric metal seal. According to another characteristic of the invention, an annular seal, made of an elastically deformable material such as the elastomer, is interposed between the part accommodated in the fastening flange and the face of the other fastening flange 25 situated opposite this piece. According to another characteristic of the invention, the fixing flange comprising the counterbore is located downstream of the fluid flow in the two assembled coaxial tubes. According to another characteristic of the invention, the two attachment flanges are integral respectively with the two ends of the coaxial tubes. According to another characteristic of the invention, the part consists of a circular plate. According to another characteristic of the invention, the part is a counting diaphragm or a flow conditioner or a fluid flow limiter.
L'invention sera maintenant décrite en détail, en référence aux figures annexées. la figure 1 est une demi-vue en coupe d'un dispositif d'assemblage connu; la figure 2 est une vue en coupe d'un dispositif d'assemblage selon l'invention; la figure 3 est une vue agrandie de la partie cerclée en III de la figure 2. Les figures 2 et 3 présentent un dispositif d'assemblage 1 de deux tubes coaxiaux 2,2' selon l'invention, les tubes 2,2' étant destinés au transport d'un fluide et notamment au transport de gaz à forte pression tel que du gaz naturel. Ce dispositif d'assemblage 1 comprend des éléments 15 similaires à ceux du dispositif d'assemblage connu présenté à la figure 1. En effet, il comprend également deux tubes coaxiaux 2,2', généralement cylindriques, pouvant être traversés par le fluide dans le sens indiqué par les flèches. 20 Deux brides de fixation 10,10' sont solidairement liées, par des soudures d'étanchéité 4,4', respectivement aux extrémités 5,5' des tubes 2,2' pour assembler coaxialement ces deux extrémités 5,5'. Chaque bride 10,10' solidaire d'un tube 2,2' présente 25 une face interne 13,13' destinée à être en regard d'une face interne 13',13 de l'autre bride 10',10. Les faces internes 13 et 13' sont contenues dans des plans perpendiculaires à la direction d'écoulement du fluide. Les deux brides de fixation 10,10' sont assemblées 30 l'une à l'autre par des moyens de serrage ou de blocage 6 des brides 10 et 10' régulièrement répartis sur la périphérie des brides 10,10'. Chaque moyen de serrage 6 peut être constitué d'une tige filetée 7 traversant de part en part les deux brides 10,10' et de deux écrous 8,8' vissés 35 aux extrémités libres de la tige filetée 7 et venant en appui sur les parois externes opposées 11,11' des deux brides 10,10'. En variante, chaque tige filetée 7 et écrous 8,8' peuvent être remplacés par un boulon de fixation. En outre, une pièce 20, pouvant être traversée par le fluide, est interposée entre les brides 10 et 10' sensiblement perpendiculairement à l'écoulement du fluide. The invention will now be described in detail with reference to the accompanying figures. Figure 1 is a half-sectional view of a known assembly device; Figure 2 is a sectional view of an assembly device according to the invention; FIG. 3 is an enlarged view of the circled portion III of FIG. 2. FIGS. 2 and 3 show an assembly device 1 of two coaxial tubes 2, 2 'according to the invention, the tubes 2, 2' being intended for the transport of a fluid and particularly for the transport of high pressure gases such as natural gas. This assembly device 1 comprises elements 15 similar to those of the known assembly device shown in FIG. 1. In fact, it also comprises two coaxial tubes 2.2 ', which are generally cylindrical and can be traversed by the fluid in the direction indicated by the arrows. Two fastening flanges 10, 10 'are integrally bonded by sealing welds 4,4' respectively to the ends 5,5 'of the tubes 2,2' to coaxially join these two ends 5,5 '. Each flange 10, 10 'integral with a tube 2, 2' has an inner face 13, 13 'intended to face an inner face 13', 13 of the other flange 10 ', 10. The inner faces 13 and 13 'are contained in planes perpendicular to the flow direction of the fluid. The two fastening flanges 10, 10 'are connected to one another by means of clamping or locking means 6 of the flanges 10 and 10' evenly distributed over the periphery of the flanges 10, 10 '. Each clamping means 6 may consist of a threaded rod 7 passing right through the two flanges 10, 10 'and two nuts 8, 8' screwed to the free ends of the threaded rod 7 and resting on the opposite outer walls 11,11 'of the two flanges 10,10'. Alternatively, each threaded rod 7 and nuts 8,8 'can be replaced by a fixing bolt. In addition, a piece 20, which can be traversed by the fluid, is interposed between the flanges 10 and 10 'substantially perpendicular to the flow of the fluid.
Cette pièce 20 est constituée d'une plaque circulaire perforée afin de permettre le passage du fluide et présente une face amont 22, une face aval 23 et un bord périphérique 26. Cette pièce 20 est un diaphragme de comptage mais peut 10 être constituée par un conditionneur de débit ou un limiteur de débit. En position assemblée des deux tubes 2,2', les deux brides de fixation 10,10' ont leurs faces internes 13,13', en regard l'une de l'autre, espacées. Comme le montre la 15 figure 2, l'espacement entre les deux brides de fixation 10,10' est constitué d'un premier espace annulaire interne 14 de plus faible largeur en direction transversale aux brides de fixation 10,10' et un deuxième espace annulaire interne 15 concentrique de plus grande largeur. 20 Selon l'invention, la pièce 20 est logée dans au moins un lamage 16' réalisé dans l'une des deux brides de fixation 10,10', plus précisément dans la face interne 13' de cette bride de fixation 10' délimitant l'espace annulaire interne 14 de plus petite largeur. 25 Dans le mode de configuration représenté aux figures 2 et 3, la pièce 20 est logée dans un lamage 16' unique réalisé dans la bride de fixation 10' située en aval de l'écoulement du fluide dans les deux tubes coaxiaux 2,2' assemblés. 30 Avantageusement, le lamage 16' a une profondeur sensiblement égale à l'épaisseur de la pièce 20. Ainsi, les faces internes 13 et 13' des brides 10 et 10' sont juxtaposées, c'est-à-dire très proches l'une de l'autre sans être en contact intime. 35 Cette configuration nécessite alors un seul joint d'étanchéité 24 interposé entre les brides 10,10' dans l'espace annulaire 14 de plus faible largeur pour assurer une bonne étanchéité du dispositif d'assemblage 1. Le joint annulaire d'étanchéité 24 est logé dans deux gorges annulaires 18,18', en regard l'une de l'autre, réalisées respectivement dans les deux brides de fixation 10,10'. De préférence, le joint annulaire d'étanchéité 24 est un joint métallique torique et est disposé concentriquement au lamage 16' à l'extérieur de celui-ci. La pièce 20 est d'une part en appui contre le fond 16'A du lamage 16' et d'autre part sur la face circulaire dressée 16'B du lamage 16'. Ainsi, contrairement au dispositif connu représenté à la figure 1, la pièce 20 n'est pas soumise à la pression interne de la tuyauterie. De façon à compenser des différences de cotes dues à l'assemblage des brides 10,10' et du joint annulaire d'étanchéité 24 et à plaquer la face aval 23 de la pièce 20 contre le fond 16'A du lamage 16', un joint annulaire souple 28 est interposé entre la face amont 22 de la pièce 20 et la face interne 13 de l'autre bride de fixation 10 située en regard de cette pièce 20. Ce joint annulaire souple 28 est un joint plat réalisé en un matériau élastiquement déformable tel que l'élastomère. Il est à noter que la disposition de l'espace annulaire interne 15 de plus grande largeur entre les brides de fixation 10,10' permet d'améliorer le serrage de celles- ci autour du joint d'étanchéité 24. Selon une variante de réalisation non représentée, la pièce 20 est logée dans deux lamages, un lamage réalisé dans une des brides et un lamage réalisé dans l'autre bride. Dans ce cas, le joint annulaire souple 28 est interposé entre la face amont 22 de la pièce 20 et le fond du lamage de la bride de fixation 10 située en amont de l'écoulement du fluide. Un tel dispositif d'assemblage 1 propose une construction simplifiée, moins encombrante et plus sûre relativement au dispositif connu représenté à la figure 1 grâce au fait qu'elle ne nécessite qu'un seul joint d'étanchéité 24. This piece 20 consists of a perforated circular plate to allow the passage of fluid and has an upstream face 22, a downstream face 23 and a peripheral edge 26. This part 20 is a counting diaphragm but may be constituted by a flow conditioner or a flow restrictor. In the assembled position of the two tubes 2,2 ', the two fastening flanges 10,10' have their internal faces 13,13 ', facing one another, spaced apart. As shown in FIG. 2, the spacing between the two fastening flanges 10, 10 'consists of a first internal annular space 14 of smaller width in a direction transverse to the fastening flanges 10, 10' and a second space concentric inner ring 15 of greater width. According to the invention, the part 20 is housed in at least one countersink 16 'made in one of the two fastening flanges 10, 10', more precisely in the inner face 13 'of this fastening flange 10' delimiting the inner annular space 14 of smaller width. In the configuration mode shown in FIGS. 2 and 3, the piece 20 is housed in a single counterbore 16 'made in the fastening flange 10' located downstream of the fluid flow in the two coaxial tubes 2, 2 '. assembled. Advantageously, the counterbore 16 'has a depth substantially equal to the thickness of the part 20. Thus, the inner faces 13 and 13' of the flanges 10 and 10 'are juxtaposed, that is to say very close to the one of the other without being in intimate contact. This configuration then requires a single seal 24 interposed between the flanges 10, 10 'in the annular space 14 of smaller width to ensure a good seal of the assembly device 1. The annular seal 24 is housed in two annular grooves 18,18 ', opposite one another, made respectively in the two clamps 10,10'. Preferably, the annular seal 24 is a toric metal seal and is concentrically disposed at the counterbore 16 'outside thereof. The piece 20 is on the one hand bearing against the bottom 16'A of the counterbore 16 'and secondly on the upright circular face 16'B of the counterbore 16'. Thus, unlike the known device shown in Figure 1, the part 20 is not subjected to the internal pressure of the pipe. In order to compensate for differences in dimensions due to the assembly of the flanges 10, 10 'and the annular seal 24 and to press the downstream face 23 of the part 20 against the bottom 16'A of the counterbore 16', a flexible annular seal 28 is interposed between the upstream face 22 of the piece 20 and the inner face 13 of the other fastening flange 10 located opposite this piece 20. This flexible annular seal 28 is a flat seal made of an elastic material deformable such as elastomer. It should be noted that the arrangement of the inner annular space 15 of greater width between the fixing flanges 10, 10 'makes it possible to improve the clamping thereof around the seal 24. According to an embodiment variant not shown, the piece 20 is housed in two countersinks, a countersink formed in one of the flanges and a recess made in the other flange. In this case, the flexible annular seal 28 is interposed between the upstream face 22 of the part 20 and the bottom of the counterbore of the fastening flange 10 located upstream of the flow of the fluid. Such an assembly device 1 proposes a simplified construction, less cumbersome and safer relative to the known device shown in FIG. 1 thanks to the fact that it only requires a single seal 24.
De plus, grâce au logement de la pièce 20 en appui contre les parois de fond 16'A et latérale 16'B du lamage 16', la pièce 20, contrairement au dispositif connu, n'est pas soumise à la pression interne de la tuyauterie et n'impose aucune une résistance à l'écoulement du fluide. In addition, thanks to the housing of the part 20 bearing against the bottom walls 16'A and side 16'B counterbore 16 ', the part 20, unlike the known device, is not subjected to the internal pressure of the piping and does not impose resistance to fluid flow.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0652655A FR2902857B1 (en) | 2006-06-27 | 2006-06-27 | DEVICE FOR ASSEMBLING TWO PIPES INTENDED FOR TRANSPORTING A FLUID AND A PART INTERPOSING BETWEEN THESE PIPES. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0652655A FR2902857B1 (en) | 2006-06-27 | 2006-06-27 | DEVICE FOR ASSEMBLING TWO PIPES INTENDED FOR TRANSPORTING A FLUID AND A PART INTERPOSING BETWEEN THESE PIPES. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2902857A1 true FR2902857A1 (en) | 2007-12-28 |
| FR2902857B1 FR2902857B1 (en) | 2010-08-13 |
Family
ID=37745864
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR0652655A Active FR2902857B1 (en) | 2006-06-27 | 2006-06-27 | DEVICE FOR ASSEMBLING TWO PIPES INTENDED FOR TRANSPORTING A FLUID AND A PART INTERPOSING BETWEEN THESE PIPES. |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2902857B1 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2928276A1 (en) * | 2008-03-10 | 2009-09-11 | Ridel Soc Par Actions Simplifi | MECHANICAL VAPOR COMPRESSION EVAPORATOR HAVING A SEPARATOR INLET RELIEF DEVICE |
| CN105570572A (en) * | 2016-03-02 | 2016-05-11 | 江西浙丰管业有限公司 | Throttling socket and spigot joint type pipe connector |
| CN105927815A (en) * | 2016-06-16 | 2016-09-07 | 安徽江淮专用汽车有限公司 | Pressure reducing device of sewage inlet pipeline |
| EP3076060A1 (en) * | 2015-04-01 | 2016-10-05 | Robert Bosch Gmbh | Pipe joint between two flange elements and use of the pipe joint |
| CN107366794A (en) * | 2017-09-08 | 2017-11-21 | 大连海事大学 | A kind of moisture film generation device for preventing cavitation pitting |
| CN111336331A (en) * | 2020-03-13 | 2020-06-26 | 上海外高桥造船有限公司 | L-shaped leaning and welding flange |
| CN113669633A (en) * | 2021-07-30 | 2021-11-19 | 开封科隆流量仪表有限公司 | KLLD type clamp connection type electromagnetic flowmeter |
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| FR2083112A5 (en) * | 1970-05-26 | 1971-12-10 | Masoneilan Int Inc | |
| FR2233914A5 (en) * | 1973-06-18 | 1975-01-10 | Masoneilan Int Inc | Noise reduction for fluid flow - reduces fluid energy by injection of other fluid |
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| US5056830A (en) * | 1990-07-27 | 1991-10-15 | Reaux James R | Flanged repair coupling for pipeline service |
| US20030155721A1 (en) * | 2002-02-15 | 2003-08-21 | Zheng Qiu Shi | Metal-to-metal seal and method of making same |
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| US3516688A (en) * | 1966-04-28 | 1970-06-23 | Jean Gachot | Multiple-purpose demountable pipe-coupling system |
| FR2083112A5 (en) * | 1970-05-26 | 1971-12-10 | Masoneilan Int Inc | |
| FR2233914A5 (en) * | 1973-06-18 | 1975-01-10 | Masoneilan Int Inc | Noise reduction for fluid flow - reduces fluid energy by injection of other fluid |
| US3869132A (en) * | 1973-07-18 | 1975-03-04 | Pressure Science Inc | Fire resistant sealing ring combination |
| US5056830A (en) * | 1990-07-27 | 1991-10-15 | Reaux James R | Flanged repair coupling for pipeline service |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2928276A1 (en) * | 2008-03-10 | 2009-09-11 | Ridel Soc Par Actions Simplifi | MECHANICAL VAPOR COMPRESSION EVAPORATOR HAVING A SEPARATOR INLET RELIEF DEVICE |
| WO2009112451A1 (en) * | 2008-03-10 | 2009-09-17 | Ridel | Evaporator with mechanical vapour compression including an expansion device at the separator inlet |
| EP3076060A1 (en) * | 2015-04-01 | 2016-10-05 | Robert Bosch Gmbh | Pipe joint between two flange elements and use of the pipe joint |
| CN105570572A (en) * | 2016-03-02 | 2016-05-11 | 江西浙丰管业有限公司 | Throttling socket and spigot joint type pipe connector |
| CN105927815A (en) * | 2016-06-16 | 2016-09-07 | 安徽江淮专用汽车有限公司 | Pressure reducing device of sewage inlet pipeline |
| CN107366794A (en) * | 2017-09-08 | 2017-11-21 | 大连海事大学 | A kind of moisture film generation device for preventing cavitation pitting |
| CN111336331A (en) * | 2020-03-13 | 2020-06-26 | 上海外高桥造船有限公司 | L-shaped leaning and welding flange |
| CN113669633A (en) * | 2021-07-30 | 2021-11-19 | 开封科隆流量仪表有限公司 | KLLD type clamp connection type electromagnetic flowmeter |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2902857B1 (en) | 2010-08-13 |
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