FR2494393A1 - Articulated gas pipe joint - has nozzle fixed inside upstream half tapering in downstream direction - Google Patents
Articulated gas pipe joint - has nozzle fixed inside upstream half tapering in downstream direction Download PDFInfo
- Publication number
- FR2494393A1 FR2494393A1 FR8024277A FR8024277A FR2494393A1 FR 2494393 A1 FR2494393 A1 FR 2494393A1 FR 8024277 A FR8024277 A FR 8024277A FR 8024277 A FR8024277 A FR 8024277A FR 2494393 A1 FR2494393 A1 FR 2494393A1
- Authority
- FR
- France
- Prior art keywords
- nozzle
- articulated
- circuit
- gas pipe
- pipe joint
- 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.)
- Withdrawn
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/18—Construction facilitating manufacture, assembly, or disassembly
- F01N13/1805—Fixing exhaust manifolds, exhaust pipes or pipe sections to each other, to engine or to vehicle body
- F01N13/1811—Fixing exhaust manifolds, exhaust pipes or pipe sections to each other, to engine or to vehicle body with means permitting relative movement, e.g. compensation of thermal expansion or vibration
-
- 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
- F16L27/00—Adjustable joints, Joints allowing movement
- F16L27/02—Universal joints, i.e. with mechanical connection allowing angular movement or adjustment of the axes of the parts in any direction
- F16L27/04—Universal joints, i.e. with mechanical connection allowing angular movement or adjustment of the axes of the parts in any direction with partly spherical engaging surfaces
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Joints Allowing Movement (AREA)
Abstract
Description
La présente invention concerne un raccord articulé pour conduite de gaz. Cette invention perfectionne plus particulièrement, les raccords du type à rotule, qui assurent un découplage en flexion et torsion entre la partie amont et la partie aval d'une conduite de gaz qui peut par exemple être un circuit d'échappement de véhicule à moteur. The present invention relates to an articulated connection for a gas pipe. This invention more particularly improves, the ball-and-socket type fittings, which provide decoupling in bending and torsion between the upstream part and the downstream part of a gas pipe which can for example be a motor vehicle exhaust circuit.
Le but de l'invention est de fournir un raccord articulé de ce genre, perfectionné de manière à éviter les fuites de gaz vers l'extérieur pendant le fonctionnement, tout en conservant une structure très simple et par conséquent une fabrication économique du raccord. The object of the invention is to provide an articulated connection of this kind, improved so as to avoid gas leaks to the outside during operation, while retaining a very simple structure and therefore economical manufacture of the connection.
A cet effet, l'invention a essentiellement pour objet un raccord articulé du genre précédemment rappelé,-qui comprend en outre une tuyère placée à l'intérieur de la zone de liaison des deux éléments articulés du raccord, la tuyère ayant son extrémité de plus grand diamètre dirigée vers l'élément articulé raccordé à la partie amont du circuit, et cette tuyère se rétrécissant endirection de la partie aval du circuit. To this end, the invention essentially relates to an articulated connector of the kind mentioned above, which further comprises a nozzle placed inside the connection zone of the two articulated elements of the connector, the nozzle having its end more large diameter directed towards the articulated element connected to the upstream part of the circuit, and this nozzle narrowing endirection of the downstream part of the circuit.
La tuyère, placée à l'intérieur de la liaison sphérique dans le cas d'un raccord du type à rotule, peut être notamment fixée par sertissage, par soudure ou par collage sur un des éléments constituant l'articulation. The nozzle, placed inside the spherical connection in the case of a ball-type connection, can in particular be fixed by crimping, by welding or by bonding to one of the elements constituting the joint.
Le fonctionnement du raccord articulé, objet de l'invention, évitant les fuites vers l'extérieur, est basé sur le phénomène d'aspiration engendrée à la périphérie de la sortie d'une tuyère par le fluide circulant à grande vitesse à travers celle-ci (principe utilisé pour la pompe à vide) : les gaz situés dans la rotule ou autre forme d'articulation, à l'extérieur de la tuyère, se trouvent aspirés par les gaz sortant à grande vitesse de cette tuyère. The operation of the articulated connector, object of the invention, preventing leaks to the outside, is based on the phenomenon of suction generated at the periphery of the outlet of a nozzle by the fluid flowing at high speed through it ci (principle used for the vacuum pump): the gases located in the ball joint or other form of articulation, outside the nozzle, are sucked by the gases leaving at high speed from this nozzle.
Les caractéristiques dimensionnelles de la tuyère sont déterminées de manière à ce qu'au régime "normal" de fonctionnement, la dépression dynamique due à la tuyère soit équivalente à la pression des gaz. Les dimensions de la tuyère d'une articulation utilisée sur un circuit d'échappement de véhicule à moteur, seront également déterminées de cette façon. Pour un régime inférieur au régime "normal" (par exemple au ralenti), la pression des gaz étant faible, la fuite au niveau de l'articulation du raccord devient négligeable. Pour un régime supérieur la fuite se produit vers l'intérieur, donc sous la forme d'une aspiration d'air qui n1 est pas genante dans ce cas. The dimensional characteristics of the nozzle are determined so that at "normal" operating conditions, the dynamic depression due to the nozzle is equivalent to the pressure of the gases. The dimensions of the nozzle of a joint used on a motor vehicle exhaust system will also be determined in this way. For a speed lower than the "normal" speed (for example at idle), the gas pressure being low, the leak at the joint of the fitting becomes negligible. For a higher speed, the leak occurs inward, therefore in the form of an air intake which is not annoying in this case.
De toute façon, l'invention sera bien comprise à l'aide de la description qui suit, en référence à l'unique figure du dessin schématique annexé représentant, à titre d'exemple non limitatif, une forme d'exécution de ce raccord articulé pour tubulure d'échappement de gaz. Anyway, the invention will be clearly understood with the aid of the description which follows, with reference to the single figure of the appended schematic drawing representing, by way of nonlimiting example, an embodiment of this articulated connection for gas exhaust manifold.
Sur cette figure est représenté, en coupe passant par l'axe 1, un raccord articule 2 du type à rotule, intercalé entre la partie amont 3 et la partie aval 4 d'un circuit d'échappement de véhicule à moteur à explosion. D'une manière connue, le raccord 2 comprend :
- un premier élément 5, formé d'un embout tubulaire 6 raccordé à la partie amont 3 du circuit et prolongé par un évasement sphérique 7
- un second élément 8, formé d'un embout tubulaire 9 raccordé à la partie aval 4 du circuit, et prolongé par un évasement sphérique 10.In this figure is shown, in section passing through the axis 1, an articulated connection 2 of the ball type, interposed between the upstream part 3 and the downstream part 4 of an exhaust circuit of an internal combustion engine vehicle. In a known manner, the connector 2 comprises:
- A first element 5, formed of a tubular end piece 6 connected to the upstream part 3 of the circuit and extended by a spherical flaring 7
a second element 8, formed of a tubular end piece 9 connected to the downstream part 4 of the circuit, and extended by a spherical flaring 10.
Les deux évasements sphériques 7 et 10 sont emboîtés l'un dans l'autre concentriquement, le centre de l'articulation à rotule ainsi réalisée étant indiqué en 11. The two spherical flares 7 and 10 are nested one inside the other concentrically, the center of the ball joint thus produced being indicated at 11.
Selon l'invention, l'élément articulé 5 raccordé à la partie amont 3 du circuit comprend, entre l'embout 6 et l'évasement sphérique 7, une portée 12 sur laquelle est fixé intérieurement une tuyère 13. According to the invention, the articulated element 5 connected to the upstream part 3 of the circuit comprises, between the endpiece 6 and the spherical flaring 7, a bearing surface 12 on which a nozzle 13 is fixed internally.
La fixation de la tuyère 13 sur l'élément articulé 5 est faite à l'extrémité 14 de plus grand diamètre de la tuyère. The attachment of the nozzle 13 to the articulated element 5 is made at the end 14 of larger diameter of the nozzle.
Cette tuyère 13 s'étend à l'intérieur de la rotule, et elle va en se rétrécissant en direction de la partie aval 4 du circuit, c'est à dire dans le sens d'écoulement des gaz, indiqué par la flèche 15. This nozzle 13 extends inside the ball joint, and it tapers towards the downstream part 4 of the circuit, that is to say in the direction of flow of the gases, indicated by arrow 15.
Bien entendu, l'invention ne se limite pas à la seule forme d'exécution de ce raccord articulé qui a été décrite cidessus, à titre d'exemple ; elle en embrasse, au contraire, toutes les variantes de réalisation et d'application. Of course, the invention is not limited to the only embodiment of this articulated connection which has been described above, by way of example; on the contrary, it embraces all of the variant embodiments and applications.
Ainsi, le perfectionnement objet de l'invention est facilement applicable à toute articulation, non étanche par elle-m8me, à travers laquelle circule un gaz à une vitesse et une pression sensiblement constante ; la tuyère est dans chaque cas déterminée suivant les# caractéristiques de ce régime permanent d'écoulement gazeux. Thus, the improvement which is the subject of the invention is easily applicable to any joint, which is not itself leaktight, through which a gas circulates at a substantially constant speed and pressure; the nozzle is in each case determined according to the # characteristics of this permanent gas flow regime.
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8024277A FR2494393A1 (en) | 1980-11-14 | 1980-11-14 | Articulated gas pipe joint - has nozzle fixed inside upstream half tapering in downstream direction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8024277A FR2494393A1 (en) | 1980-11-14 | 1980-11-14 | Articulated gas pipe joint - has nozzle fixed inside upstream half tapering in downstream direction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR2494393A1 true FR2494393A1 (en) | 1982-05-21 |
Family
ID=9247999
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR8024277A Withdrawn FR2494393A1 (en) | 1980-11-14 | 1980-11-14 | Articulated gas pipe joint - has nozzle fixed inside upstream half tapering in downstream direction |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2494393A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2933912A3 (en) * | 2008-07-18 | 2010-01-22 | Renault Sas | Exhaust system arrangement for motor vehicle, has exhaust clamp mounted on exhaust manifold of exhaust system, and sealing ring mounted on exhaust line, where exhaust clamp is mounted on exhaust manifold |
| FR3000133A1 (en) * | 2012-12-26 | 2014-06-27 | Renault Sa | EXHAUST LINE OF A MOTOR VEHICLE HAVING AN IMPROVED BALL |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2338449A1 (en) * | 1976-01-16 | 1977-08-12 | Bauer Roehren Pumpen | Connection of thin walled tube to end fittings - using internal and external conical shells to grip tube with internal shell hydraulically or manually driven through fitting (OE 15.9.77) |
-
1980
- 1980-11-14 FR FR8024277A patent/FR2494393A1/en not_active Withdrawn
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2338449A1 (en) * | 1976-01-16 | 1977-08-12 | Bauer Roehren Pumpen | Connection of thin walled tube to end fittings - using internal and external conical shells to grip tube with internal shell hydraulically or manually driven through fitting (OE 15.9.77) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2933912A3 (en) * | 2008-07-18 | 2010-01-22 | Renault Sas | Exhaust system arrangement for motor vehicle, has exhaust clamp mounted on exhaust manifold of exhaust system, and sealing ring mounted on exhaust line, where exhaust clamp is mounted on exhaust manifold |
| FR3000133A1 (en) * | 2012-12-26 | 2014-06-27 | Renault Sa | EXHAUST LINE OF A MOTOR VEHICLE HAVING AN IMPROVED BALL |
| WO2014102029A1 (en) * | 2012-12-26 | 2014-07-03 | Renault S.A.S | Motor vehicle exhaust line comprising an improved ball-and-socket joint |
| CN104937230A (en) * | 2012-12-26 | 2015-09-23 | 雷诺股份公司 | Motor vehicle exhaust line comprising an improved ball-and-socket joint |
| CN104937230B (en) * | 2012-12-26 | 2017-12-15 | 雷诺股份公司 | Motor vehicle exhaust pipeline including improved ball-and-socket joint |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0057623B1 (en) | Exhaust gas silencer of a heat engine | |
| FR2698408A1 (en) | Cylinder head for an internal combustion engine. | |
| EP0434578A1 (en) | Exhaust outlet with venturi | |
| FR2734052A1 (en) | PRESSURE SENSOR FOR INTERNAL COMBUSTION ENGINE HAVING SUCTION TUBE | |
| FR2857076A1 (en) | ANNULAR JOINT FOR CONNECTING FLUID TRANSFER AND CONNECTION EQUIPPED WITH SUCH A SEAL. | |
| FR2754583A1 (en) | VALVE, ESPECIALLY FOR TUBING OF AN EXHAUST LINE | |
| FR2902155A1 (en) | NOISE ATTENUATOR AND ESPECIALLY NOISE GENERATED BY A MOTOR SUPERCURRENT BY A TURBOCHARGER | |
| FR2930278A1 (en) | Exhaust gas recirculation module for vehicle's internal combustion engine, has heat exchanger connected to recirculated exhaust gas conduit, and filter assembly placed in rectilinear portion of conduit and removably fixed on conduit | |
| FR2494393A1 (en) | Articulated gas pipe joint - has nozzle fixed inside upstream half tapering in downstream direction | |
| FR2506837A1 (en) | EXHAUST GAS CONDUIT TO BE MOUNTED BETWEEN AN INTERNAL COMBUSTION ENGINE AND AN EXHAUST GAS TURBO-COMPRESSOR | |
| FR2566504A1 (en) | Vibration-absorbent hose | |
| EP1598533A2 (en) | Device for measuring pressure before and after a particle filter in an exhaust gas line | |
| FR2633664A3 (en) | EXHAUST DEVICE FOR COMBUSTION PRODUCTS FOR TWO-STROKE ENGINES | |
| EP0951616A1 (en) | Fuel pump assembly for motor vehicle and tank equipped with same | |
| FR2844008A1 (en) | DOUBLE SEALED EGR TUBE ASSEMBLY | |
| FR2682159A1 (en) | SUCTION DEVICE FOR EXHAUSTING THE DUST IN THE EXHAUST LINE OF AN INTERNAL COMBUSTION ENGINE, DUST CONTAINED IN THE INTAKE AIR OF THIS ENGINE, AND EXHAUST LINE COMPRISING SUCH A DEVICE. | |
| FR2913261A3 (en) | Upper and lower oil return pipelines connecting arrangement for vehicle, has flange and joint of upper pipeline housed in diameter part of lower pipeline, where pipelines are pivoted with respect to one another to ensure pivot connection | |
| FR2509005A1 (en) | Articulated joint for vehicle exhaust - has sintered metal and graphite joint ring between angled faces of pipe and silencer | |
| FR2504645A1 (en) | ASSEMBLY OF A TUBE WITH A CONNECTING ELEMENT, PARTICULARLY FOR AN EXHAUST PIPE OF AN INTERNAL COMBUSTION ENGINE | |
| FR2649756A1 (en) | Improved exhaust device for an engine equipped with a turbo compressor, particularly for a motor vehicle | |
| FR2924164A1 (en) | Fluid pressure pulsation dampening device for cooling system of engine i.e. internal combustion engine, of motor vehicle, has fluid inlet engaged in volume defined by wall forming rigid envelope, and dampening element housed in envelope | |
| FR3081936A1 (en) | MOTOR VEHICLE ENGINE ASSEMBLY WITH INTEGRATED CANISTER BLEEDING PIPE | |
| EP0371841B1 (en) | Cooling circuit for an internal-combustion engine of a motor vehicle | |
| FR2881504A1 (en) | Sound absorber for absorbing noises generated by exhaust gases from an exhaust gas opening of a heating device comprises a tubular base body defining a flow channel with a smaller diameter/cross-sectional area than the exhaust gas opening | |
| FR2870567A1 (en) | Exhaust line for motor vehicle, has orientation unit orienting displacement of silencer/inlet pipe in direction of stop, in case of displacement of line by impact, to interrupt displacement of line in direction of internal combustion engine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |