WO2006136737A1 - Rotular connection device for pipelines - Google Patents

Rotular connection device for pipelines Download PDF

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Publication number
WO2006136737A1
WO2006136737A1 PCT/FR2006/001474 FR2006001474W WO2006136737A1 WO 2006136737 A1 WO2006136737 A1 WO 2006136737A1 FR 2006001474 W FR2006001474 W FR 2006001474W WO 2006136737 A1 WO2006136737 A1 WO 2006136737A1
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WO
WIPO (PCT)
Prior art keywords
downstream
upstream
connecting element
main
ball joint
Prior art date
Application number
PCT/FR2006/001474
Other languages
French (fr)
Inventor
Bertrand Gary
Original Assignee
Eurl Gary Technologies
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
Priority claimed from FR0506476A external-priority patent/FR2887608A1/en
Application filed by Eurl Gary Technologies filed Critical Eurl Gary Technologies
Publication of WO2006136737A1 publication Critical patent/WO2006136737A1/en

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Classifications

    • 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
    • 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
    • F16L27/047—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 held in place by a screwed member having an internal spherical surface
    • 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
    • F16L27/06—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 with special sealing means between the engaging surfaces

Definitions

  • the present invention relates to a rotary connection device for pipeline.
  • This device is in particular intended to equip a pipe at the outlet of exhaust valves of high pressure steam and high temperature, in order to protect the valve.
  • the invention finds particular application in the field of venting pipes of the exhaust of these valves, for example in nuclear power plants.
  • a steam collector is used. This is particularly the case in a nuclear power plant.
  • Such a plant has steam generators equipped with a steam collector.
  • Such a collector can be protected against overpressure by safety valves.
  • the output of these valves is generally connected to an exhaust vent line.
  • the valves and the pipes are subjected to very significant constraints.
  • the vapor escaping from the valve at this high pressure and this high temperature quickly meets a bend in the vent pipe.
  • the bent pipe rigidly connected to the outlet of the valve exerts on it significant efforts.
  • the valves quickly exhibit leaks mainly caused by the significant bending moment of the torsors coming from the exhaust vent of these valves.
  • the exhaust pipe of each valve is usually at atmospheric pressure as it is not requested.
  • the safety valve opens and the exhaust pipe is then subjected to this high pressure of the order of 22 bar relative to this high temperature of the order of 250 ° C, which corresponds to a steam flow of the order of 340 tons per hour and a steam speed greater than 240 meters per second.
  • Rotating connection devices are known between the outlet of an exhaust valve and a pipe, in particular US Pat. No. 2,955,850, which comprise a main coupling element with an upstream part and a downstream part with respect to the escapement.
  • a first lateral connection element is disposed between the outlet of the exhaust valve and the upstream portion of the main coupling element, and forms with this upstream portion an upstream rotational assembly.
  • a second lateral connecting element is disposed between the downstream part of the main coupling element and the pipe, and forms with this downstream part of the main coupling element a downstream rotational assembly.
  • the object of the invention is therefore to provide a solution to the problem among other problems, by proposing a solution in which the connection between the exhaust valve and the vent pipe of this exhaust not only has a certain flexibility, thus damping the forces exerted by the pipe on the valve, but also has adaptability to different configuration and facilitates maintenance.
  • the invention thus relates to a rotational coupling device between the outlet of an exhaust valve and a pipe.
  • the rotational coupling device comprises a main coupling element itself comprising an upstream portion and a downstream portion relative to the exhaust.
  • It also comprises a first lateral connection element between the outlet of the exhaust valve and the upstream part of the main coupling element, and forming with this upstream part an upstream rotational assembly.
  • the main coupling element comprises, between the upstream and downstream parts, a central adapter element.
  • the upstream rotational assembly allows an angular displacement of the pipe, providing flexibility to the connection between the exhaust valve and the vent pipe of this exhaust, necessary to damp the forces exerted by this pipe on the valve, and correspondingly decrease the moment generated by the pipe on the valve.
  • the resulting device reduces in particular the sealing problems observed at the exhaust valves after a certain period of use.
  • the presence of the central adaptation element makes it possible to adapt the rotary connection of the invention to any configuration, regardless of the distance between the outlet of the exhaust valve of the vent pipe of this exhaust.
  • the central adaptation element allows easy maintenance, making the connection easily removable for cleaning for example, without having to disassemble the upstream and downstream joints.
  • rotational assembly means an assembly comprising at least one element of partially or totally spherical external shape acting as a ball joint, and a partially or totally spherical inner part element acting as a housing for the ball joint.
  • the outer surface of the ball joint thus co-operates with the inner surface of the housing, thus forming a connection of the pivot connection type.
  • the central adaptation element is maintained with the upstream portion by first fastening means and with the downstream portion by second fastening means.
  • the first and / or second fixing means can ensure the attachment of an intermediate connecting element to the ends of the central adapter element, with the upstream and / or downstream part of the main coupling element.
  • first and / or second fixing means ensure the attachment of the central element of the central adapter element, directly with the upstream and / or downstream part of the main coupling element.
  • first and / or second fixing means comprise a clamping collar.
  • the first and / or second fastening means may further comprise means for screwing the central adapter element, and / or one or more intermediate coupling elements of the central adapter element, on or in the upstream part and / or the downstream part.
  • the first lateral coupling element forms the ball of the upstream rotational assembly and the upstream portion of the main coupling element forms the housing of this ball joint.
  • the upstream portion of the main coupling element forms the ball joint of the upstream rotational assembly and the first lateral coupling element forms the housing of this ball joint.
  • the device comprises a second lateral connection element, located between the downstream part of the main coupling element and the pipe, and forming with this downstream part of the main coupling element or of another element. intermediate fitting a downstream rotational assembly.
  • the presence of the second rotational assembly or downstream rotational assembly makes it possible to more effectively compensate for any axial displacement, that is to say along the axis of the connection or the outlet of the exhaust valve.
  • downstream part of the main coupling element forms the ball joint of the downstream rotational assembly
  • the second lateral connection element forms the housing of this ball joint
  • the second lateral connection element forms the ball joint of the downstream rotational assembly, and the downstream part of the main coupling element forms the housing of this ball joint.
  • the ball housing of at least one of the upstream and downstream rotational assemblies comprises at least two distinct parts held by fixing means.
  • these fixing means comprise a clamping collar.
  • these fixing means may comprise means for screwing one of the two distinct parts of the rotational assembly on the other.
  • the device comprises at least one purge orifice, thus making it possible to evacuate the possible condensates and possible rust accumulated in a low point of the device.
  • At least one of the two upstream and downstream rotational assemblies comprises a seal between the ball and its housing, thereby protecting the sliding surfaces of the rotational assembly (contact surfaces between the ball and its housing) against steam, rust and water.
  • the main coupling element comprises at least two assembled parts, for example by welding. One of these parts comprises the upstream part of this main coupling element and another of these parts comprises the downstream part of the main coupling element.
  • the part comprising the upstream part of the main connecting element may have a structure that is almost identical to either that of the second lateral connection element or that of the other part comprising the downstream part of the main element. fitting.
  • the structure of the first lateral connection element may be almost identical to that of the second lateral connection element, or to that of the other part comprising the downstream part of the main coupling element.
  • the invention therefore advantageously provides a connection between the outlet of an exhaust valve and the vent pipe of this exhaust, which has little problem sealing and other degradation of wear.
  • the two upstream and downstream rotational assemblies effectively allow sufficient angular deflection of the pipe with respect to the valve. These rotary assemblies thus provide flexibility to the connection between the exhaust valve and the vent pipe of this exhaust, necessary for damping the forces exerted by this pipe on the valve. The moment generated by the pipe on the valve is therefore reduced, achieving the goal of reducing sealing problems and other degradation.
  • FIG. 1 a schematically represents the device in a first variant embodiment, seen in section
  • FIG. 1 b schematically represents the device of the first slightly modified embodiment variant, seen in section
  • FIG. 1c schematically represents the device in the first embodiment variant of embodiment, seen in three-dimensional perspective
  • FIG. 2 schematically represents the device in a second variant embodiment, seen in section.
  • Figures 3a to 3c show schematically and respectively the device in three other embodiments, seen in section.
  • FIG. 1 a thus schematically represents the device in a first variant embodiment, seen in section.
  • the device is disposed between the outlet of an exhaust valve 1 and a pipe 2 for venting the exhaust
  • the device therefore comprises a main coupling element 3 comprising an upstream portion 31 and a downstream portion 32.
  • the terms upstream and downstream must be understood with respect to the direction of escape.
  • the upstream portion 31 is the end located on the side of the exhaust valve 1
  • the downstream portion 32 is the end located on the side of the pipe 2.
  • the main coupling element 3 is connected by its part. uphill
  • the upstream portion 31 of the main coupling element 3 is of the female connector type, and its downstream portion 32 is of the male connector type.
  • the first lateral connection element 4 is of the male connector type
  • the second lateral connection element 6 is of the female connector type.
  • the internal diameter of the fittings is generally greater than the internal diameter of the pipe, in order not to significantly increase the pressure drop in the system.
  • the partially spherical outer shape of the male connector type fittings thus co-operates with the partially spherical inner shape of the female connector type fittings to form a pivotal connection.
  • the first lateral connecting element 4 forms with the upstream portion 31 of the main connecting element 3 an upstream rotational assembly 5.
  • the second lateral connecting element 6 forms with the downstream part 32 of the main connecting element 3 a downstream rotational assembly 7.
  • the first lateral connecting element 4 forms the ball joint, in the upstream rotational assembly 5, and the upstream portion 31 of the main connecting element 3 forms the housing of this in the same rotatable assembly 5.
  • the downstream part 32 of the main connecting element 3 forms the ball joint, in the downstream tubular assembly 6, and the second lateral connecting element 6 forms the housing of this ball joint in this same rotational assembly 7.
  • the upstream portion 31 of the main coupling element 3, and optionally the second lateral connecting element 6, each constituting and respectively the housing of the ball joint in the rotary assemblies 5 and 7, consist of at least two separate parts.
  • These distinct parts are referenced 5a and 5b in the case of the upstream part 31 of the main connecting element 3, therefore of the upstream rotational assembly 5, and are referenced 7a and 7b in the case of the second lateral connecting element 6, so in the case of the downstream rotational assembly 7.
  • the device is provided with one or more emptying holes, generally arranged at the low points of the device.
  • the main coupling element 3 may comprise at least two assembled parts, for example by welding.
  • One of these parts comprises the upstream portion 31 and then has a structure identical to that of the second lateral connection element 6.
  • the manufacture and the installation are limited to the manufacture and the installation of two almost identical rotational assemblies to be welded on site, with a weld if to bind the rotational assembly 5 to the rotational assembly 7, and a weld s2 to bind the rotational assembly 7 to the delivery pipe 2 to the atmosphere of the exhaust, so to bind the entire device of the rotary connection to this pipe 2.
  • the first lateral connection element 5 is connected to the outlet 1 of the exhaust valve via for example a flange 14 which is fixed for example by screwing into a flange of the outlet 1 of the valve.
  • the main coupling element 3 comprises a central adapter element between the upstream 31 and downstream 32 parts.
  • This central adapter element itself comprises a central element 33 and two intermediate coupling elements 34, 35 respectively for connecting the central element 33 to the upstream 31 and downstream 32 parts.
  • the central adaptation element is thus maintained, in its intermediate connection element 34, with the upstream part 31, by first fixing means 36.
  • These first fixing means 36 may be of the clamping collar type and / or a screwing of the intermediate coupling element 34 in or on the upstream part 31.
  • the central adaptation element is maintained, in its intermediate connection element 35, with the downstream part 32, by second fixing means 37.
  • second fixing means 37 may be of the clamping collar type and / or a screwing of the intermediate connection element 35 in or on the downstream part 32.
  • Figure 1b schematically shows the device described above with respect to Figure 1a, with a slight modification.
  • the central adapter element does not comprise an intermediate connection element for connection to the upstream part 31.
  • clamping collar 36 directly squeezes the end of the central element 33 of the central adapter element with the upstream end 31.
  • FIG. 1c schematically represents the device described previously with reference to FIG. 1a, and therefore in a first variant embodiment, but seen in this context in three-dimensional perspective.
  • the downstream rotational assembly 7 comprises the second lateral fitting element 6 and the downstream part (not referenced) of the main coupling element 3.
  • the upstream rotational assembly 5 comprises the upstream part (not referenced) and the first lateral element connector 4 (not referenced). The latter is intended to be connected to the outlet of an exhaust valve (not shown) via, for example, a flange 14.
  • the two clamps 8 and 9 make it possible to fix the separate parts 7a together, 7b and 5a, 5b, respectively constituting the second lateral connecting element 6 and the upstream portion 31 of the main connecting element 3.
  • This central adapter element itself comprises a central element 33.
  • Figure 2 shows schematically the device in a second embodiment, seen in section.
  • the attachment of the parts 5a and 5b is obtained by screwing the portion 5b on the part 5a, which eliminates the clamp 9 of the previous variant.
  • the fixing of the parts 7a and 7b is obtained by screwing the part 7b on the part 7a, which makes it possible to get rid of the collar of tightening 8 of the previous variant.
  • FIG. 2 The other elements referenced in this FIG. 2 are identical to the elements of the same reference in FIG. 1 a, and are therefore not redetailed here.
  • Figures 3a to 3c show schematically and respectively the device in three other embodiments, seen in section.
  • FIG. 3a differs from that represented in FIG. 1a in that the downstream rotational assembly 7 is modified.
  • the second lateral connecting element 6 plays the role of the ball in the rotational assembly 7
  • the downstream portion 32 of the main coupling element 3 plays the role of the housing of this ball in this rotulaire assembly 7.
  • connection elements 5 and 6 are quasi-identical parts, symmetrically assembled in the device.
  • the second part of the main connecting element 3, comprising its upstream part 31, is almost identical to its first part comprising its downstream part 32, these parts being assembled symmetrically.
  • FIG. 3b differs from that represented in FIG. 3a in that the upstream rotational assembly 5 is modified.
  • the upstream portion 31 of the main connecting element 3 plays the role of the ball in the rotational assembly 5
  • the first lateral connecting element 4 plays the role of the housing of this ball joint in this rotatable assembly 5.
  • first lateral connection element 4 and the first part of the main connection element 3 comprising its downstream part 32 are quasi-identical parts, assembled symmetrically in the device.
  • the second part of the main coupling element 3, comprising its upstream portion 31, is almost identical to the second lateral fitting element 6, these parts being assembled symmetrically.
  • FIG. 3c differs from that represented in FIG. 3b in that the upstream rotational assembly 7 is modified. Indeed, in this variant, the downstream portion 32 of the main connecting element 3 acts as the ball joint in the rotational assembly 7, and the second lateral connecting element 6 plays the role of the housing of this ball joint in this rotulaire assembly 7.
  • first lateral connection element 4 and the second lateral connection element 6 are quasi-identical parts assembled symmetrically in the device.
  • the second part of the main connecting element 3, comprising its upstream part 31 is almost identical to the first part of this main connecting element 3, comprising its upstream part 32, these parts being assembled symmetrically.
  • the shape of the various elements included in the device of the invention is not limiting. This is the case in particular of the shape of the elements included in the rotary assemblies 5 and 7, which is not limiting of the invention, from the moment when the contact surfaces make it possible to provide the partial pivot link function. .
  • the outer surface of the ball and the inner surface of its housing must be at least partially spherical.
  • the means for fixing these two parts distinct from each other are not limiting. of the invention, provided that the establishment of the patella in its housing is possible, and that the assembly once mounted has the necessary properties to ensure a movement partially rotulaire while guaranteeing a good level of tightness and the maintenance in position of the connection.
  • the dimensions of the various elements included in the device are not limited to the invention.
  • the length and the inside diameter of the main connecting element 3 and the two connecting side elements 4 and 6 are simply given by way of example and may vary according to the situation.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Taps Or Cocks (AREA)

Abstract

The invention relates to a rotular connection device for pipelines, especially for a pipeline located at the outlet of exhaust valves for releasing high-pressure and high-temperature vapour. Said device is especially used in atmospheric vent risers, for example in nuclear power stations. The inventive device comprises a main connection element (3) provided with an upstream part (31) and a downstream part (32) in relation to the exhaust, a first lateral connection element (4) which is arranged between the exhaust (1) valve outlet and the upstream part (31) of the main connection element (3), forming an upstream rotular assembly (5) with the upstream part (31), and a second lateral connection element (6) which is arranged between the downstream part (32) of the main connection element (3) and the pipeline (2), forming a downstream rotular assembly (7) with the downstream part (32) of the main connection element (3). Characteristically, the main connection element (3) comprises a central adapter element (33, 34, 35) between the upstream (31) and downstream (32) parts.

Description

DISPOSITIF DE RACCORD ROTULAIRE POUR CANALISATION. ROTARY CONNECTION DEVICE FOR PIPING.
La présente invention a pour objet un dispositif de raccord rotulaire pour canalisation. Ce dispositif est en particulier destiné à équiper une canalisation en sortie de soupapes d'échappement de vapeur haute pression et haute température, dans le but de protéger la soupape. L'invention trouve notamment son application dans le domaine des canalisations de mise à l'atmosphère de l'échappement de ces soupapes, par exemple dans les centrales nucléaires. Généralement, dans les industries où l'on trouve des systèmes de circulation, notamment de vapeur, on utilise un collecteur de vapeur. C'est le cas notamment dans une centrale nucléaire. Une telle centrale dispose de générateurs de vapeur équipés d'un collecteur de vapeur. Un tel collecteur peut être protégé contre les surpressions par des soupapes de sûreté.The present invention relates to a rotary connection device for pipeline. This device is in particular intended to equip a pipe at the outlet of exhaust valves of high pressure steam and high temperature, in order to protect the valve. The invention finds particular application in the field of venting pipes of the exhaust of these valves, for example in nuclear power plants. Generally, in industries with circulation systems, such as steam, a steam collector is used. This is particularly the case in a nuclear power plant. Such a plant has steam generators equipped with a steam collector. Such a collector can be protected against overpressure by safety valves.
La sortie de ces soupapes est généralement connectée à une canalisation de mise à l'atmosphère de l'échappement. Compte tenu de la haute pression, de l'ordre de 22 bars, et de la haute température, de l'ordre de 250 °C, les soupapes et les canalisations sont soumises à des contraintes très importantes. En particulier, la vapeur s'échappant de la soupape à cette haute pression et cette haute température rencontre rapidement un coude dans la canalisation de mise à l'atmosphère. En réaction, la canalisation coudée raccordée rigidement à la sortie de la soupape exerce sur celle-ci des efforts importants. Après un certain temps d'utilisation, les soupapes présentent rapidement des inétanchéités causées principalement par le moment de flexion important des torseurs provenant de la canalisation de mise à l'atmosphère de l'échappement de ces soupapes.The output of these valves is generally connected to an exhaust vent line. Given the high pressure, of the order of 22 bars, and the high temperature of the order of 250 ° C, the valves and the pipes are subjected to very significant constraints. In particular, the vapor escaping from the valve at this high pressure and this high temperature quickly meets a bend in the vent pipe. In response, the bent pipe rigidly connected to the outlet of the valve exerts on it significant efforts. After a certain period of use, the valves quickly exhibit leaks mainly caused by the significant bending moment of the torsors coming from the exhaust vent of these valves.
En effet, la canalisation d'échappement de chaque soupape est généralement à la pression atmosphérique tant qu'elle n'est pas sollicitée.Indeed, the exhaust pipe of each valve is usually at atmospheric pressure as it is not requested.
Puis, en cas de surpression du circuit vapeur, la soupape de sûreté s'ouvre et la canalisation d'échappement est alors soumise à cette haute pression de l'ordre de 22 bars relativement à cette haute température de l'ordre de 250 °C, ce qui correspond à un débit vapeur de l'ordre de 340 tonnes par heure et une vitesse vapeur supérieure à 240 mètres par seconde.Then, in case of overpressure of the steam circuit, the safety valve opens and the exhaust pipe is then subjected to this high pressure of the order of 22 bar relative to this high temperature of the order of 250 ° C, which corresponds to a steam flow of the order of 340 tons per hour and a steam speed greater than 240 meters per second.
Le problème qui se pose est donc notamment de diminuer le moment généré par la canalisation de mise à l'atmosphère de l'échappement de la soupape sur la soupape elle-même, tout en bloquant les déplacements de la canalisation. On connaît des dispositif de raccord rotulaire entre la sortie d'une soupape d'échappement et une canalisation, notamment du document US 2,955,850, qui comprennent un élément principal de raccord avec une partie amont et une partie aval par rapport à l'échappement.The problem that arises is, in particular, to reduce the moment generated by the venting line of the exhaust valve on the valve itself, while blocking the displacements of the pipe. Rotating connection devices are known between the outlet of an exhaust valve and a pipe, in particular US Pat. No. 2,955,850, which comprise a main coupling element with an upstream part and a downstream part with respect to the escapement.
Un premier élément latéral de raccord est disposé entre la sortie de la soupape d'échappement et la partie amont de l'élément principal de raccord, et forme avec cette partie amont un ensemble rotulaire amont.A first lateral connection element is disposed between the outlet of the exhaust valve and the upstream portion of the main coupling element, and forms with this upstream portion an upstream rotational assembly.
Un deuxième élément latéral de raccord est disposé entre la partie aval de l'élément principal de raccord et la canalisation, et forme avec cette partie aval de l'élément principal de raccord un ensemble rotulaire aval.A second lateral connecting element is disposed between the downstream part of the main coupling element and the pipe, and forms with this downstream part of the main coupling element a downstream rotational assembly.
Toutefois, de tels dispositifs présentent plusieurs inconvénients.However, such devices have several disadvantages.
Ils ne sont pas facilement adaptables à toutes les situations que l'on peut rencontrer, dans lesquelles la distance entre la sortie de la soupape d'échappement et la canalisation de mise à l'atmosphère de cet échappement est variable.They are not easily adaptable to all situations that may be encountered, in which the distance between the outlet of the exhaust valve and the vent pipe of this exhaust is variable.
Par ailleurs, les rejets de vapeur engendrent un dépôt de calamine important qui nécessite une maintenance régulière. Or, le débattement angulaire n'est pas suffisant pour faire sortir facilement les rotules de leur logement. Il faut, en tout état de cause, démonter les rotules pour accéder à l'intérieur du raccord et des canalisations pour la maintenance.In addition, steam releases generate a large scale deposit that requires regular maintenance. However, the angular movement is not sufficient to easily remove the ball joints from their housing. In any case, it is necessary to remove the ball joints to access the inside of the connection and the pipes for maintenance.
L'objet de l'invention est donc d'apporter une solution au problème précité parmi d'autres problèmes, en proposant une solution dans laquelle le raccord entre la soupape d'échappement et la canalisation de mise à l'atmosphère de cet échappement, non seulement présente une certaine flexibilité, amortissant ainsi les efforts exercés par la canalisation sur la soupape, mais également présente une adaptabilité à différente configuration et facilite la maintenance.The object of the invention is therefore to provide a solution to the problem among other problems, by proposing a solution in which the connection between the exhaust valve and the vent pipe of this exhaust not only has a certain flexibility, thus damping the forces exerted by the pipe on the valve, but also has adaptability to different configuration and facilitates maintenance.
L'invention se rapporte donc à un dispositif de raccord rotulaire entre la sortie d'une soupape d'échappement et une canalisation.The invention thus relates to a rotational coupling device between the outlet of an exhaust valve and a pipe.
Le dispositif de raccord rotulaire comprend un élément principal de raccord lui-même comprenant une partie amont et une partie aval par rapport à l'échappement.The rotational coupling device comprises a main coupling element itself comprising an upstream portion and a downstream portion relative to the exhaust.
Il comprend également un premier élément latéral de raccord entre la sortie de la soupape d'échappement et la partie amont de l'élément principal de raccord, et formant avec cette partie amont un ensemble rotulaire amont.It also comprises a first lateral connection element between the outlet of the exhaust valve and the upstream part of the main coupling element, and forming with this upstream part an upstream rotational assembly.
Il comprend encore un deuxième élément latéral de raccord entre la partie aval de l'élément principal de raccord et la canalisation, et formant avec cette partie aval de l'élément principal de raccord un ensemble rotulaire aval. De façon caractéristique, l'élément principal de raccord comprend, entre les parties amont et aval, un élément central d'adaptation.It further comprises a second lateral connection element between the downstream part of the main connecting element and the pipe, and forming with this downstream part of the main connecting element a downstream rotational assembly. Typically, the main coupling element comprises, between the upstream and downstream parts, a central adapter element.
Ainsi, l'ensemble rotulaire amont permet un débattement angulaire de la canalisation, apportant une flexibilité au raccord entre la soupape d'échappement et la canalisation de mise à l'atmosphère de cet échappement, nécessaire pour amortir les efforts exercés par cette canalisation sur la soupape, et diminuer en conséquence le moment généré par la canalisation sur la soupape.Thus, the upstream rotational assembly allows an angular displacement of the pipe, providing flexibility to the connection between the exhaust valve and the vent pipe of this exhaust, necessary to damp the forces exerted by this pipe on the valve, and correspondingly decrease the moment generated by the pipe on the valve.
Le dispositif obtenu permet de réduire notamment les problèmes d'étanchéité observés au niveau des soupapes d'échappement après un certain temps d'utilisation.The resulting device reduces in particular the sealing problems observed at the exhaust valves after a certain period of use.
La présence de l'élément central d'adaptation permet d'adapter le raccord rotulaire de l'invention à n'importe quelle configuration, indépendamment de la distance séparant la sortie de la soupape d'échappement de la canalisation de mise à l'atmosphère de cet échappement. L'élément central d'adaptation permet facilite la maintenance, en rendant le raccord facilement démontable pour nettoyage par exemple, sans avoir à démonter les rotules amont et aval.The presence of the central adaptation element makes it possible to adapt the rotary connection of the invention to any configuration, regardless of the distance between the outlet of the exhaust valve of the vent pipe of this exhaust. The central adaptation element allows easy maintenance, making the connection easily removable for cleaning for example, without having to disassemble the upstream and downstream joints.
Par ensemble rotulaire, on entend un ensemble comprenant au moins un élément de forme extérieure partiellement ou totalement sphérique jouant le rôle de rotule, et un élément de forme intérieure partiellement ou totalement sphérique jouant le rôle de logement pour la rotule. La surface extérieure de la rotule coopère ainsi avec la surface intérieure du logement, formant ainsi une liaison de type liaison pivot.The term "rotational assembly" means an assembly comprising at least one element of partially or totally spherical external shape acting as a ball joint, and a partially or totally spherical inner part element acting as a housing for the ball joint. The outer surface of the ball joint thus co-operates with the inner surface of the housing, thus forming a connection of the pivot connection type.
Dans une variante de réalisation, l'élément central d'adaptation est maintenu avec la partie amont par des premiers moyens de fixation et avec la partie aval par des deuxièmes moyens de fixation.In an alternative embodiment, the central adaptation element is maintained with the upstream portion by first fastening means and with the downstream portion by second fastening means.
Les premier et/ou deuxième moyens de fixation peuvent assurer la fixation d'un élément intermédiaire de raccord aux extrémités de l'élément central d'adaptation, avec la partie amont et/ou aval de l'élément principal de raccord.The first and / or second fixing means can ensure the attachment of an intermediate connecting element to the ends of the central adapter element, with the upstream and / or downstream part of the main coupling element.
Alternativement, les premier et/ou deuxième moyens de fixation assurent la fixation de l'élément central de l'élément central d'adaptation, directement avec la partie amont et/ou aval de l'élément principal de raccord. Eventuellement, les premier et/ou deuxième moyens de fixation comprennent un collier de serrage.Alternatively, the first and / or second fixing means ensure the attachment of the central element of the central adapter element, directly with the upstream and / or downstream part of the main coupling element. Optionally, the first and / or second fixing means comprise a clamping collar.
Les premier et/ou deuxième moyens de fixation peuvent encore comprendre des moyens de vissage de l'élément central d'adaptation, et/ou d'un ou plusieurs éléments intermédiaires de raccord de l'élément central d'adaptation, sur ou dans la partie amont et/ou la partie aval.The first and / or second fastening means may further comprise means for screwing the central adapter element, and / or one or more intermediate coupling elements of the central adapter element, on or in the upstream part and / or the downstream part.
D'autres variantes de réalisation du dispositif de l'invention sont présentées ci-après, chacune pouvant être considérée isolément ou en combinaison avec une ou plusieurs autres variantes de réalisation.Other embodiments of the device of the invention are presented below, each of which may be considered in isolation or in combination with one or more other embodiments.
Dans une première variante, le premier élément latéral de raccord forme la rotule de l'ensemble rotulaire amont et la partie amont de l'élément principal de raccord forme le logement de cette rotule.In a first variant, the first lateral coupling element forms the ball of the upstream rotational assembly and the upstream portion of the main coupling element forms the housing of this ball joint.
Dans une deuxième variante, la partie amont de l'élément principal de raccord forme la rotule de l'ensemble rotulaire amont et le premier élément latéral de raccord forme le logement de cette rotule.In a second variant, the upstream portion of the main coupling element forms the ball joint of the upstream rotational assembly and the first lateral coupling element forms the housing of this ball joint.
Dans une troisième variante, le dispositif comprend un deuxième élément latéral de raccord, situé entre la partie aval de l'élément principal de raccord et la canalisation, et formant avec cette partie aval de l'élément principal de raccord ou d'un autre élément de raccord intermédiaire un ensemble rotulaire aval.In a third variant, the device comprises a second lateral connection element, located between the downstream part of the main coupling element and the pipe, and forming with this downstream part of the main coupling element or of another element. intermediate fitting a downstream rotational assembly.
Ainsi, la présence du deuxième ensemble rotulaire ou ensemble rotulaire aval permet de compenser plus efficacement un éventuel déplacement axial, c'est-à-dire selon l'axe du raccord ou de la sortie de la soupape d'échappement.Thus, the presence of the second rotational assembly or downstream rotational assembly makes it possible to more effectively compensate for any axial displacement, that is to say along the axis of the connection or the outlet of the exhaust valve.
De préférence, la partie aval de l'élément principal de raccord forme la rotule de l'ensemble rotulaire aval, et le deuxième élément latéral de raccord forme le logement de cette rotule.Preferably, the downstream part of the main coupling element forms the ball joint of the downstream rotational assembly, and the second lateral connection element forms the housing of this ball joint.
Alternativement, le deuxième élément latéral de raccord forme la rotule de l'ensemble rotulaire aval, et la partie aval de l'élément principal de raccord forme le logement de cette rotule.Alternatively, the second lateral connection element forms the ball joint of the downstream rotational assembly, and the downstream part of the main coupling element forms the housing of this ball joint.
Eventuellement, le logement de rotule d'au moins un des ensembles rotulaires amont et aval comprend au moins deux parties distinctes maintenues par des moyens de fixation. De préférence, ces moyens de fixation comprennent un collier de serrage. Alternativement, ces moyens de fixation peuvent comprendre des moyens de vissage de l'une des deux parties distinctes de l'ensemble rotulaire sur l'autre. Eventuellement encore, le dispositif comprend au moins un orifice de purge, permettant ainsi d'évacuer les éventuels condensats et l'éventuelle rouille accumulés dans un point bas du dispositif.Optionally, the ball housing of at least one of the upstream and downstream rotational assemblies comprises at least two distinct parts held by fixing means. Preferably, these fixing means comprise a clamping collar. Alternatively, these fixing means may comprise means for screwing one of the two distinct parts of the rotational assembly on the other. Optionally still, the device comprises at least one purge orifice, thus making it possible to evacuate the possible condensates and possible rust accumulated in a low point of the device.
De préférence, au moins un des deux ensembles rotulaires amont et aval comprend un joint d'étanchéité entre la rotule et son logement, permettant ainsi de protéger les surfaces de glissement de l'ensemble rotulaire (surfaces de contact entre la rotule et son logement) contre la vapeur, la rouille et l'eau.Preferably, at least one of the two upstream and downstream rotational assemblies comprises a seal between the ball and its housing, thereby protecting the sliding surfaces of the rotational assembly (contact surfaces between the ball and its housing) against steam, rust and water.
De préférence également, l'élément principal de raccord comprend au moins deux parties assemblées, par exemple par soudage. L'une de ces parties comprend la partie amont de cet élément principal de raccord et une autre de ces parties comprend la partie aval de l'élément principal de raccord.Also preferably, the main coupling element comprises at least two assembled parts, for example by welding. One of these parts comprises the upstream part of this main coupling element and another of these parts comprises the downstream part of the main coupling element.
Dans ce cas, la partie comprenant la partie amont de l'élément principal de raccord peut posséder une structure quasi-identique soit à celle du deuxième élément latéral de raccord soit à celle de l'autre partie comprenant la partie aval de l'élément principal de raccord.In this case, the part comprising the upstream part of the main connecting element may have a structure that is almost identical to either that of the second lateral connection element or that of the other part comprising the downstream part of the main element. fitting.
Egalement, la structure du premier élément latéral de raccord peut être quasi-identique soit à celle du deuxième élément latéral de raccord, soit à celle de l'autre partie comprenant la partie aval de l'élément principal de raccord. L'invention permet donc avantageusement de disposer d'un raccord entre la sortie d'une soupape d'échappement et la canalisation de mise à l'atmosphère de cet échappement, qui présente peu de problème d'étanchéité et autre dégradation d'usure. En particulier, les deux ensembles rotulaires amont et aval permettent effectivement un débattement angulaire suffisant de la canalisation par rapport à la soupape. Ces ensembles rotulaires apportent donc la flexibilité au raccord entre la soupape d'échappement et la canalisation de mise à l'atmosphère de cet échappement, nécessaire à l'amortissement des efforts exercés par cette canalisation sur la soupape. Le moment généré par la canalisation sur la soupape est donc diminué, permettant d'atteindre l'objectif de réduction des problèmes d'étanchéité et autre dégradation. D'autres caractéristiques et avantages de l'invention apparaîtront plus clairement et de manière complète à la lecture de la description ci- après des variantes préférées de réalisation, lesquelles sont données à titre d'exemples non limitatifs et en référence aux dessins annexés suivants. figure 1 a : représente schématiquement le dispositif dans une première variante de réalisation, vu en coupe, figure 1 b : représente schématiquement le dispositif de la première variante de réalisation légèrement modifié, vu en coupe, figure 1c : représente schématiquement le dispositif dans la première variante de réalisation, vu en perspective tridimensionnelle figure 2 représente schématiquement le dispositif dans une deuxième variante de réalisation, vu en coupe. figures 3a à 3c : représentent schématiquement et respectivement le dispositif dans trois autres variantes de réalisation, vu en coupe. La figure 1 a représente donc schématiquement le dispositif dans une première variante de réalisation, vu en coupe.Also, the structure of the first lateral connection element may be almost identical to that of the second lateral connection element, or to that of the other part comprising the downstream part of the main coupling element. The invention therefore advantageously provides a connection between the outlet of an exhaust valve and the vent pipe of this exhaust, which has little problem sealing and other degradation of wear. In particular, the two upstream and downstream rotational assemblies effectively allow sufficient angular deflection of the pipe with respect to the valve. These rotary assemblies thus provide flexibility to the connection between the exhaust valve and the vent pipe of this exhaust, necessary for damping the forces exerted by this pipe on the valve. The moment generated by the pipe on the valve is therefore reduced, achieving the goal of reducing sealing problems and other degradation. Other characteristics and advantages of the invention will appear more clearly and completely on reading the following description of the preferred embodiments, which are given by way of non-limiting examples and with reference to the following appended drawings. FIG. 1 a: schematically represents the device in a first variant embodiment, seen in section, FIG. 1 b: schematically represents the device of the first slightly modified embodiment variant, seen in section, FIG. 1c: schematically represents the device in the first embodiment variant of embodiment, seen in three-dimensional perspective FIG. 2 schematically represents the device in a second variant embodiment, seen in section. Figures 3a to 3c show schematically and respectively the device in three other embodiments, seen in section. FIG. 1 a thus schematically represents the device in a first variant embodiment, seen in section.
Le dispositif est disposé entre la sortie d'une soupape d'échappement 1 et une canalisation 2 de mise à l'atmosphère de l'échappementThe device is disposed between the outlet of an exhaust valve 1 and a pipe 2 for venting the exhaust
Le dispositif comprend donc un élément principal de raccord 3 comprenant une partie amont 31 et une partie aval 32. Les termes amont et aval doivent s'entendre par rapport au sens d'échappement. Ainsi, la partie amont 31 est l'extrémité située du côté de la soupape d'échappement 1 , et la partie aval 32 est l'extrémité située du côté de la canalisation 2. L'élément principal de raccord 3 est raccordé par sa partie amontThe device therefore comprises a main coupling element 3 comprising an upstream portion 31 and a downstream portion 32. The terms upstream and downstream must be understood with respect to the direction of escape. Thus, the upstream portion 31 is the end located on the side of the exhaust valve 1, and the downstream portion 32 is the end located on the side of the pipe 2. The main coupling element 3 is connected by its part. uphill
31 à la sortie de la soupe d'échappement 1 par l'intermédiaire d'un premier élément latéral de raccord 4, et par sa partie aval 32 à la canalisation 2 de mise à l'atmosphère de l'échappement par l'intermédiaire d'un deuxième élément latéral de raccord 6.31 at the exit of the exhaust soup 1 via a first lateral connecting element 4, and its downstream part 32 to the exhaust vent pipe 2 via a second lateral connecting element 6.
Dans cette variante de réalisation, la partie amont 31 de l'élément principal de raccord 3 est de type raccord femelle, et sa partie aval 32 est de type raccord mâle. Par ailleurs, le premier élément latéral de raccord 4 est de type raccord mâle, et le deuxième élément latéral de raccord 6 est de type raccord femelle.In this variant embodiment, the upstream portion 31 of the main coupling element 3 is of the female connector type, and its downstream portion 32 is of the male connector type. Moreover, the first lateral connection element 4 is of the male connector type, and the second lateral connection element 6 is of the female connector type.
Le diamètre intérieur des raccords est généralement supérieur au diamètre intérieur de la canalisation, dans le but de ne pas augmenter significativement la perte de charge dans le système.The internal diameter of the fittings is generally greater than the internal diameter of the pipe, in order not to significantly increase the pressure drop in the system.
La forme extérieure partiellement sphérique des raccords de type raccord mâle coopère ainsi avec la forme intérieure partiellement sphérique des raccords de type raccord femelle, de façon à former une liaison pivot. De la sorte, le premier élément latéral de raccord 4 forme avec la partie amont 31 de l'élément principal de raccord 3 un ensemble rotulaire amont 5. De même, le deuxième élément latéral de raccord 6 forme avec la partie aval 32 de l'élément principal de raccord 3 un ensemble rotulaire aval 7. Ainsi, le premier élément latéral de raccord 4 forme la rotule, dans l'ensemble rotulaire amont 5, et la partie amont 31 de l'élément principal de raccord 3 forme le logement de cette rotule dans ce même ensemble rotulaire 5. De même, la partie aval 32 de l'élément principal de raccord 3 forme la rotule, dans l'ensemble rotulaire aval 6, et le deuxième élément latéral de raccord 6 forme le logement de cette rotule dans ce même ensemble rotulaire 7.The partially spherical outer shape of the male connector type fittings thus co-operates with the partially spherical inner shape of the female connector type fittings to form a pivotal connection. In this way, the first lateral connecting element 4 forms with the upstream portion 31 of the main connecting element 3 an upstream rotational assembly 5. Similarly, the second lateral connecting element 6 forms with the downstream part 32 of the main connecting element 3 a downstream rotational assembly 7. Thus, the first lateral connecting element 4 forms the ball joint, in the upstream rotational assembly 5, and the upstream portion 31 of the main connecting element 3 forms the housing of this in the same rotatable assembly 5. Similarly, the downstream part 32 of the main connecting element 3 forms the ball joint, in the downstream tubular assembly 6, and the second lateral connecting element 6 forms the housing of this ball joint in this same rotational assembly 7.
De préférence, la partie amont 31 de l'élément principal de raccord 3, et éventuellement le deuxième élément latéral de raccord 6, constituant chacun et respectivement le logement de la rotule dans les ensembles rotulaires 5 et 7, sont constitués d'au moins deux parties distinctes. Ces parties distinctes sont référencées 5a et 5b dans le cas de la partie amont 31 de l'élément principal de raccord 3, donc de l'ensemble rotulaire amont 5, et sont référencées 7a et 7b dans le cas du deuxième élément latéral de raccord 6, donc dans le cas de l'ensemble rotulaire aval 7.Preferably, the upstream portion 31 of the main coupling element 3, and optionally the second lateral connecting element 6, each constituting and respectively the housing of the ball joint in the rotary assemblies 5 and 7, consist of at least two separate parts. These distinct parts are referenced 5a and 5b in the case of the upstream part 31 of the main connecting element 3, therefore of the upstream rotational assembly 5, and are referenced 7a and 7b in the case of the second lateral connecting element 6, so in the case of the downstream rotational assembly 7.
Ces deux parties distinctes 5a, 5b et/ou 7a, 7b, sont maintenues ensemble par des moyens de fixation 8 et/ou 9. Il peut s'agir par exemple de colliers de serrage.These two distinct parts 5a, 5b and / or 7a, 7b are held together by fastening means 8 and / or 9. It may be for example clamps.
De préférence, le dispositif est pourvu d'un ou plusieurs orifices de vidange, généralement disposés aux points bas du dispositif. Dans la variante de réalisation représentée à la figure 1a, on trouve ainsi deux tels orifices de vidange, référencés 10 et 11 et disposé respectivement au niveau des points bas de l'ensemble rotulaire amont 5 et de l'ensemble rotulaire aval 7.Preferably, the device is provided with one or more emptying holes, generally arranged at the low points of the device. In the alternative embodiment shown in FIG. 1a, there are thus two such drain orifices, referenced 10 and 11, respectively located at the low points of the upstream rotational assembly 5 and the downstream rotational assembly 7.
Pour améliorer l'étanchéité au niveau d'un ensemble rotulaire 5 et/ou 7, on peut prévoir de placer un joint d'étanchéité 12,13 entre la rotule 4, 32 et son logement 31 , 6.To improve the seal at a rotational assembly 5 and / or 7, provision may be made to place a seal 12, 13 between the ball joint 4, 32 and its housing 31, 6.
De préférence également, l'élément principal de raccord 3 peut comprendre au moins deux parties assemblées, par exemple par soudage. L'une de ces parties comprend la partie amont 31 et possède alors une structure identique à celle du deuxième élément de raccord latéral 6. On peut en comprendre aisément l'intérêt : la fabrication et la mise en place se trouvent limitées à la fabrication et la mise en place de deux ensembles rotulaires quasi identiques à souder sur place, avec une soudure si pour lier l'ensemble rotulaire 5 à l'ensemble rotulaire 7, et une soudure s2 pour lier l'ensemble rotulaire 7 à la canalisation 2 de mise à l'atmosphère de l'échappement, donc pour lier l'ensemble du dispositif du raccord rotulaire à cette canalisation 2.Also preferably, the main coupling element 3 may comprise at least two assembled parts, for example by welding. One of these parts comprises the upstream portion 31 and then has a structure identical to that of the second lateral connection element 6. The interest can easily be understood: the manufacture and the installation are limited to the manufacture and the installation of two almost identical rotational assemblies to be welded on site, with a weld if to bind the rotational assembly 5 to the rotational assembly 7, and a weld s2 to bind the rotational assembly 7 to the delivery pipe 2 to the atmosphere of the exhaust, so to bind the entire device of the rotary connection to this pipe 2.
Le premier élément latéral de raccord 5 est raccordé à la sortie 1 de la soupape d'échappement par l'intermédiaire par exemple d'une bride 14 qui est fixée par exemple par vissage dans une collerette de la sortie 1 de la soupape.The first lateral connection element 5 is connected to the outlet 1 of the exhaust valve via for example a flange 14 which is fixed for example by screwing into a flange of the outlet 1 of the valve.
En fonctionnement, lors de la mise en pression, la partie amont 31 de l'élément principal de raccord 3, qui joue le rôle de logement de la rotule dans l'ensemble rotulaire 5, se déplace axialement. Sa surface intérieure vient ainsi toucher la partie amont (vers la soupape) de la surface extérieure du premier élément latéral de raccord 4, qui joue le rôle de la rotule dans l'ensemble rotulaire 5. Ce contact entraîne un effet d'ouverture du logement de cette rotule.In operation, during pressurization, the upstream portion 31 of the main coupling element 3, which acts as a housing for the ball in the rotational assembly 5, moves axially. Its inner surface thus touches the upstream portion (towards the valve) of the outer surface of the first lateral connection element 4, which acts as the ball joint in the rotational assembly 5. This contact causes an opening effect of the housing of this patella.
De la même façon, lors de la mise en pression, le deuxième élément latéral de raccord 6, qui joue le rôle de logement de la rotule dans l'ensemble rotulaire 7, se déplace axialement. Sa surface intérieure vient ainsi toucher la partie amont (vers la soupape) de la surface extérieure de la partie aval 32 de l'élément principal de raccord 3, qui joue le rôle de la rotule dans l'ensemble rotulaire 7. Ce contact entraîne un effet d'ouverture du logement de cette rotule.In the same way, during pressurization, the second lateral connecting element 6, which plays the role of housing the ball in the rotational assembly 7, moves axially. Its inner surface thus touches the upstream portion (towards the valve) of the outer surface of the downstream part 32 of the main connecting element 3, which acts as the ball joint in the rotational assembly 7. This contact causes a opening effect of the housing of this patella.
Ainsi, la flexibilité nécessaire à l'amortissement des efforts sur le raccord est obtenue, les mouvements rotulaires permettant un débattement angulaire suffisant et contrôlé.Thus, the flexibility required for the damping of the forces on the connection is obtained, the rotational movements allowing a sufficient angular movement and controlled.
L'élément principal de raccord 3 comprend un élément central d'adaptation, entre les parties amont 31 et aval 32.The main coupling element 3 comprises a central adapter element between the upstream 31 and downstream 32 parts.
Cet élément central d'adaptation comprend lui-même un élément central 33 et deux éléments de raccord intermédiaires 34, 35 respectivement pour raccorder l'élément central 33 aux parties amont 31 et aval 32.This central adapter element itself comprises a central element 33 and two intermediate coupling elements 34, 35 respectively for connecting the central element 33 to the upstream 31 and downstream 32 parts.
L'élément central d'adaptation est donc maintenu, en son élément de raccord intermédiaire 34, avec la partie amont 31 , par des premiers moyens de fixation 36.The central adaptation element is thus maintained, in its intermediate connection element 34, with the upstream part 31, by first fixing means 36.
Ces premiers moyens de fixation 36 peuvent être du type collier de serrage et/ou un vissage de l'élément intermédiaire de raccord 34 dans ou sur la partie amont 31.These first fixing means 36 may be of the clamping collar type and / or a screwing of the intermediate coupling element 34 in or on the upstream part 31.
Par ailleurs, l'élément central d'adaptation est maintenu, en son élément de raccord intermédiaire 35, avec la partie aval 32, par des deuxièmes moyens de fixation 37. Ces deuxièmes moyens de fixation 37 peuvent être du type collier de serrage et/ou un vissage de l'élément intermédiaire de raccord 35 dans ou sur la partie aval 32.Moreover, the central adaptation element is maintained, in its intermediate connection element 35, with the downstream part 32, by second fixing means 37. These second fixing means 37 may be of the clamping collar type and / or a screwing of the intermediate connection element 35 in or on the downstream part 32.
La figure 1 b représente schématiquement le dispositif décrit précédemment relativement à la figure 1 a, avec une légère modification.Figure 1b schematically shows the device described above with respect to Figure 1a, with a slight modification.
En effet, dans la figure 1 b, l'élément central d'adaptation ne comprend pas d'élément intermédiaire de raccord pour le raccord à la partie amont 31.Indeed, in FIG. 1b, the central adapter element does not comprise an intermediate connection element for connection to the upstream part 31.
Dans ce cas, le collier de serrage 36 vient directement serrer l'extrémité de l'élément central 33 de l'élément central d'adaptation, avec l'extrémité amont 31.In this case, the clamping collar 36 directly squeezes the end of the central element 33 of the central adapter element with the upstream end 31.
Il serait également possible d'envisager un vissage direct de l'extrémité de l'élément central 33 de l'élément central d'adaptation, dans ou sur la partie amont 31. Les mêmes considérations pourraient bien évidemment être appliquées du côté de la partie aval 32.It would also be possible to envisage a direct screwing of the end of the central element 33 of the central adaptation element, in or on the upstream part 31. The same considerations could of course be applied on the part side. downstream 32.
Il est donc possible d'avoir ou non un élément de raccord intermédiaire 34, 35 de l'un ou des deux côtés de l'élément central 33 de l'élément central d'adaptation. La figure 1c représente schématiquement le dispositif décrit précédemment relativement à la figure 1a, donc dans une première variante de réalisation, mais vu cette fois en perspective tridimensionnelle.It is therefore possible to have or not an intermediate connector element 34, 35 on one or both sides of the central element 33 of the central adapter element. FIG. 1c schematically represents the device described previously with reference to FIG. 1a, and therefore in a first variant embodiment, but seen in this context in three-dimensional perspective.
Dans l'application au domaine des canalisations 2 de mise à l'atmosphère de l'échappement des soupapes, par exemple dans les centrales nucléaires, la canalisation 2 se présente généralement avec un coude. Cette configuration augmente les efforts mécaniques exercés en retour sur le raccord à la soupape, lors d'un lâcher de vapeur haute pression et haute température tel qu'il a était expliqué plus haut, d'où l'importance du dispositif de l'invention. On retrouve donc représentés dans cette figure 1c l'élément principal de raccord 3, l'ensemble rotulaire amont 5 et l'ensemble rotulaire aval 7.In the application to the field of pipes 2 for venting the exhaust valves, for example in nuclear power plants, the pipe 2 is generally with a bend. This configuration increases the mechanical forces exerted back on the connection to the valve, during a release of high pressure steam and high temperature as explained above, hence the importance of the device of the invention. . Thus we find represented in this Figure 1c the main connecting element 3, the upstream rotational assembly 5 and the rotational assembly downstream 7.
L'ensemble rotulaire aval 7 comprend le deuxième élément latéral de raccord 6 et la partie aval (non référencée) de l'élément principal de raccord 3. L'ensemble rotulaire amont 5 comprend la partie amont (non référencée) et le premier élément latéral de raccord 4 (non référencé). Ce dernier est destiné à être raccordé à la sortie d'une soupape d'échappement (non représentée) par l'intermédiaire par exemple d'une bride 14. Les deux colliers de serrage 8 et 9 permettent de fixer ensemble les parties distinctes 7a, 7b et 5a, 5b, constituant respectivement le deuxième élément latéral de raccord 6 et la partie amont 31 de l'élément principal de raccord 3.The downstream rotational assembly 7 comprises the second lateral fitting element 6 and the downstream part (not referenced) of the main coupling element 3. The upstream rotational assembly 5 comprises the upstream part (not referenced) and the first lateral element connector 4 (not referenced). The latter is intended to be connected to the outlet of an exhaust valve (not shown) via, for example, a flange 14. The two clamps 8 and 9 make it possible to fix the separate parts 7a together, 7b and 5a, 5b, respectively constituting the second lateral connecting element 6 and the upstream portion 31 of the main connecting element 3.
On retrouve également, dans l'élément principal de raccord 3, un élément central d'adaptation, entre les parties amont 31 et aval 32.There is also, in the main coupling element 3, a central adapter element between the upstream 31 and downstream 32 parts.
Cet élément central d'adaptation comprend lui-même un élément central 33. Les deux éléments de raccord intermédiaires 34, 35 respectivement pour raccorder l'élément central 33 aux parties amont 31 et aval 32, décrit précédemment relativement à la figure 1a, ne sont pas o représentés dans cette figure 1 c.This central adapter element itself comprises a central element 33. The two intermediate coupling elements 34, 35 respectively for connecting the central element 33 to the upstream 31 and downstream portions 32, previously described with respect to FIG. not o represented in this figure 1 c.
La figure 2 représente schématiquement le dispositif dans une deuxième variante de réalisation, vu en coupe.Figure 2 shows schematically the device in a second embodiment, seen in section.
La différence entre cette variante et la précédente, décrite relativement aux figures 1 a à 1c, consiste dans les moyens de fixation 5 respectifs des deux parties distinctes 5a, 5b et/ou 7a, 7b des ensembles rotulaires 5 et/ou 7.The difference between this variant and the previous one, described with reference to FIGS. 1 a to 1c, consists in the respective fixing means 5 of the two distinct parts 5a, 5b and / or 7a, 7b of the rotary assemblies 5 and / or 7.
Ainsi, dans cette variante, la fixation des parties 5a et 5b est obtenue par vissage de la partie 5b sur la partie 5a, ce qui permet de s'affranchir du collier de serrage 9 de la variante précédente. 0 De même, la fixation des parties 7a et 7b est obtenue par vissage de la partie 7b sur la partie 7a, ce qui permet de s'affranchir du collier de serrage 8 de la variante précédente.Thus, in this variant, the attachment of the parts 5a and 5b is obtained by screwing the portion 5b on the part 5a, which eliminates the clamp 9 of the previous variant. Similarly, the fixing of the parts 7a and 7b is obtained by screwing the part 7b on the part 7a, which makes it possible to get rid of the collar of tightening 8 of the previous variant.
Les autres éléments référencés sur cette figure 2 sont identiques aux éléments de même référence sur la figure 1 a, et ne sont donc pas redétaillés ici. Les figures 3a à 3c représentent schématiquement et respectivement le dispositif dans trois autres variantes de réalisation, vu en coupe.The other elements referenced in this FIG. 2 are identical to the elements of the same reference in FIG. 1 a, and are therefore not redetailed here. Figures 3a to 3c show schematically and respectively the device in three other embodiments, seen in section.
La variante représentée à la figure 3a diffère de celle représentée à la figure 1 a en ce que l'ensemble rotulaire aval 7 est modifié. En effet, dans cette variante, le deuxième élément latéral de raccord 6 joue le rôle de la rotule dans l'ensemble rotulaire 7, et la partie aval 32 de l'élément principal de raccord 3 joue le rôle du logement de cette rotule dans cet ensemble rotulaire 7.The variant shown in FIG. 3a differs from that represented in FIG. 1a in that the downstream rotational assembly 7 is modified. Indeed, in this variant, the second lateral connecting element 6 plays the role of the ball in the rotational assembly 7, and the downstream portion 32 of the main coupling element 3 plays the role of the housing of this ball in this rotulaire assembly 7.
On voit donc, dans cette variante, que les deux éléments latéraux de raccord 5 et 6 sont des pièces quasi-identiques, assemblées symétriquement dans le dispositif.It can thus be seen in this variant that the two lateral connection elements 5 and 6 are quasi-identical parts, symmetrically assembled in the device.
Par ailleurs, la deuxième partie de l'élément principal de raccord 3, comprenant sa partie amont 31 , est quasi-identique à sa première partie comprenant sa partie aval 32, ces parties étant assemblées symétriquement.Furthermore, the second part of the main connecting element 3, comprising its upstream part 31, is almost identical to its first part comprising its downstream part 32, these parts being assembled symmetrically.
La variante de la figure 3b diffère de celle représentée à la figure 3a en ce que l'ensemble rotulaire amont 5 est modifié.The variant of FIG. 3b differs from that represented in FIG. 3a in that the upstream rotational assembly 5 is modified.
En effet, dans cette variante, la partie amont 31 de l'élément principal de raccord 3 joue le rôle de la rotule dans l'ensemble rotulaire 5, et le premier élément latéral de raccord 4 joue le rôle du logement de cette rotule dans cet ensemble rotulaire 5.Indeed, in this variant, the upstream portion 31 of the main connecting element 3 plays the role of the ball in the rotational assembly 5, and the first lateral connecting element 4 plays the role of the housing of this ball joint in this rotatable assembly 5.
On voit donc, dans cette variante, que le premier élément latéral de raccord 4 et la première partie de l'élément principal de raccord 3 comprenant sa partie aval 32, sont des pièces quasi-identiques, assemblées symétriquement dans le dispositif.It can thus be seen in this variant that the first lateral connection element 4 and the first part of the main connection element 3 comprising its downstream part 32 are quasi-identical parts, assembled symmetrically in the device.
Par ailleurs, la deuxième partie de l'élément principal de raccord 3, comprenant sa partie amont 31 , est quasi-identique au deuxième élément latéral de raccord 6, ces parties étant assemblées symétriquement.Moreover, the second part of the main coupling element 3, comprising its upstream portion 31, is almost identical to the second lateral fitting element 6, these parts being assembled symmetrically.
La variante de la figure 3c diffère de celle représentée à la figure 3b en ce que l'ensemble rotulaire amont 7 est modifié. En effet, dans cette variante, la partie aval 32 de l'élément principal de raccord 3 joue le rôle de la rotule dans l'ensemble rotulaire 7, et le deuxième élément latéral de raccord 6 joue le rôle du logement de cette rotule dans cet ensemble rotulaire 7.The variant of FIG. 3c differs from that represented in FIG. 3b in that the upstream rotational assembly 7 is modified. Indeed, in this variant, the downstream portion 32 of the main connecting element 3 acts as the ball joint in the rotational assembly 7, and the second lateral connecting element 6 plays the role of the housing of this ball joint in this rotulaire assembly 7.
On voit donc, dans cette variante, que le premier élément latéral de raccord 4 et le deuxième élément latéral de raccord 6 sont des pièces quasi-identiques, assemblées symétriquement dans le dispositif.It can therefore be seen in this variant that the first lateral connection element 4 and the second lateral connection element 6 are quasi-identical parts assembled symmetrically in the device.
Par ailleurs, la deuxième partie de l'élément principal de raccord 3, comprenant sa partie amont 31 , est quasi-identique à la première partie de cet élément principal de raccord 3, comprenant sa partie amont 32, ces parties étant assemblées symétriquement.Moreover, the second part of the main connecting element 3, comprising its upstream part 31, is almost identical to the first part of this main connecting element 3, comprising its upstream part 32, these parts being assembled symmetrically.
L'ensemble de la description ci-dessus est donné à titre d'exemple et n'est pas limitatif de l'invention.The whole of the description above is given by way of example and is not limiting of the invention.
En particulier, la forme des différents éléments compris dans le dispositif de l'invention n'est pas limitative. C'est le cas notamment de la forme des éléments compris dans les ensembles rotulaires 5 et 7, qui n'est pas limitative de l'invention, à partir du moment où les surfaces de contact permettent d'assurer la fonction de liaison pivot partielle. Autrement dit, dans chaque ensemble rotulaire comprenant une rotule et son logement, la surface extérieure de la rotule et la surface intérieure de son logement doivent être au moins partiellement sphériques.In particular, the shape of the various elements included in the device of the invention is not limiting. This is the case in particular of the shape of the elements included in the rotary assemblies 5 and 7, which is not limiting of the invention, from the moment when the contact surfaces make it possible to provide the partial pivot link function. . In other words, in each rotulaire assembly comprising a ball and its housing, the outer surface of the ball and the inner surface of its housing must be at least partially spherical.
De même, dans le cas où le logement de rotule dans un des ensembles rotulaires 5 et/ou 7 comprend deux parties distinctes 5a, 5b et/ou 7a, 7b, les moyens de fixation de ces deux parties distinctes entre elles ne sont pas limitatifs de l'invention, pourvu que la mise en place de la rotule dans son logement soit possible, et que l'ensemble une fois monté possède les propriétés nécessaires permettant d'assurer un mouvement rotulaire partiel tout en garantissant un bon niveau d'étanchéité et le maintien en position du raccord.Similarly, in the case where the ball housing in one of the rotational assemblies 5 and / or 7 comprises two distinct parts 5a, 5b and / or 7a, 7b, the means for fixing these two parts distinct from each other are not limiting. of the invention, provided that the establishment of the patella in its housing is possible, and that the assembly once mounted has the necessary properties to ensure a movement partially rotulaire while guaranteeing a good level of tightness and the maintenance in position of the connection.
Bien sûr, également, les dimensions des différents éléments compris dans le dispositif ne sont pas non plus limitatives de l'invention. En particulier, la longueur et le diamètre intérieur de l'élément principal de raccord 3 et des deux éléments latéraux de raccord 4 et 6, sont simplement donnés à titre d'exemple et peuvent varier en fonction de la situation. Of course, also, the dimensions of the various elements included in the device are not limited to the invention. In particular, the length and the inside diameter of the main connecting element 3 and the two connecting side elements 4 and 6 are simply given by way of example and may vary according to the situation.

Claims

REVENDICATIONS
1. Dispositif de raccord rotulaire entre la sortie (1) d'une soupape d'échappement et une canalisation (2), comprenant : - un élément principal de raccord (3) comprenant une partie amont (31) et une partie aval (32) par rapport à l'échappement un premier élément latéral de raccord (4) entre la sortie (1) de ladite soupape d'échappement et ladite partie amont (31) dudit élément principal de raccord (3), et formant avec cette dite partie amont (31 ) un ensemble rotulaire amont (5) un deuxième élément latéral de raccord (6) entre ladite partie aval (32) dudit élément principal de raccord (3) et ladite canalisation (2), et formant avec cette dite partie aval (32) de l'élément principal de raccord (3) un ensemble rotulaire aval1. A rotational coupling device between the outlet (1) of an exhaust valve and a pipe (2), comprising: - a main coupling element (3) comprising an upstream portion (31) and a downstream portion (32); ) with respect to the exhaust a first lateral connecting element (4) between the outlet (1) of said exhaust valve and said upstream portion (31) of said main coupling element (3), and forming with said part upstream (31) an upstream rotational assembly (5) a second lateral connecting element (6) between said downstream part (32) of said main connecting element (3) and said duct (2), and forming with said downstream part ( 32) of the main coupling element (3) a downstream rotational assembly
(7), caractérisé en ce que ledit élément principal de raccord (3) comprend, entre lesdites parties amont (31 ) et aval (32), un élément central d'adaptation (33, 34, 35). (7), characterized in that said main connecting element (3) comprises, between said upstream (31) and downstream (32), a central adapter element (33, 34, 35).
2. Dispositif selon la revendication 1 , caractérisé en ce que l'élément central d'adaptation est maintenu avec la partie amont (31 ) par des premiers (36) moyens de fixation et avec la partie aval (32) par des deuxièmes (37) moyens de fixation. 2. Device according to claim 1, characterized in that the central element of adaptation is maintained with the upstream part (31) by first (36) fixing means and with the downstream part (32) by second (37) ) fastening means.
3. Dispositif selon la revendication 2, caractérisé en ce que les premier et/ou deuxième moyens de fixation (36, 37) assurent la fixation d'un élément intermédiaire de raccord (34, 35) aux extrémité de l'élément central d'adaptation (33, 34, 35), avec la partie amont (31 ) et/ou aval (32) de l'élément principal de raccord (3). 3. Device according to claim 2, characterized in that the first and / or second fixing means (36, 37) ensure the attachment of an intermediate connecting element (34, 35) to the ends of the central element of adaptation (33, 34, 35), with the upstream portion (31) and / or downstream (32) of the main coupling element (3).
4. Dispositif selon la revendication 2, caractérisé en ce que les premier et/ou deuxième moyens de fixation (36, 37) assurent la fixation de l'élément central (33) de l'élément central d'adaptation (33, 34, 35), directement avec la partie amont (31) et/ou aval (32) de l'élément principal de raccord (3).4. Device according to claim 2, characterized in that the first and / or second fixing means (36, 37) provide the fixing the central element (33) of the central adapter element (33, 34, 35), directly with the upstream (31) and / or downstream (32) part of the main coupling element (3) .
5. Dispositif selon l'une quelconque des revendications 2 à 4, caractérisé en ce que les premier et/ou deuxième moyens de fixation (36, 37) comprennent un collier de serrage (36, 37)5. Device according to any one of claims 2 to 4, characterized in that the first and / or second fixing means (36, 37) comprise a clamp (36, 37).
6. Dispositif selon l'une quelconque des revendications 2 et 4, caractérisé en ce que les premier et/ou deuxième moyens de fixation (36, 37) comprennent des moyens de vissage de l'élément central d'adaptation (33, 34, 35), et/ou d'un ou plusieurs éléments intermédiaires de raccord (34, 35) de l'élément central d'adaptation (33, 34, 35), sur ou dans la partie amont (31) et/ou la partie aval (32).6. Device according to any one of claims 2 and 4, characterized in that the first and / or second fixing means (36, 37) comprise means for screwing the central adapter element (33, 34, 35), and / or one or more intermediate connecting elements (34, 35) of the central adapter element (33, 34, 35), on or in the upstream part (31) and / or the part downstream (32).
7. Dispositif selon l'une quelconque des revendications 1 à 6, caractérisé en ce que le premier élément latéral de raccord (4) forme la rotule de l'ensemble rotulaire amont (5) et la partie amont (31) de l'élément principal de raccord (3) forme le logement de ladite rotule.7. Device according to any one of claims 1 to 6, characterized in that the first lateral connecting element (4) forms the ball joint of the upstream rotational assembly (5) and the upstream portion (31) of the element. main fitting (3) forms the housing of said ball joint.
8. Dispositif selon l'une quelconque des revendications 1 à 6, 0 caractérisé en ce que la partie amont (31) de l'élément principal de raccord (3) forme la rotule de l'ensemble rotulaire amont (5) et le premier élément latéral de raccord (4) forme le logement de ladite rotule.8. Device according to any one of claims 1 to 6, 0 characterized in that the upstream portion (31) of the main connecting element (3) forms the ball joint of the upstream rotational assembly (5) and the first side fitting element (4) forms the housing of said ball joint.
9. Dispositif selon l'une quelconque des revendications 1 à 8, 5 caractérisé en ce que la partie aval (32) de l'élément principal de raccord (3) forme la rotule de l'ensemble rotulaire aval (7), et le deuxième élément latéral de raccord (6) forme le logement de ladite rotule.9. Device according to any one of claims 1 to 8, characterized in that the downstream portion (32) of the main connecting element (3) forms the ball joint of the downstream rotational assembly (7), and the second lateral connecting element (6) forms the housing of said ball joint.
10. Dispositif selon l'une quelconque des revendications 1 à 8, o caractérisé en ce que le deuxième élément latéral de raccord (6) forme la rotule de l'ensemble rotulaire aval (7), et la partie aval (32) de l'élément principal de raccord (3) forme le logement de ladite rotule.10. Device according to any one of claims 1 to 8, characterized in that the second lateral connecting element (6) forms the ball joint of the downstream rotational assembly (7), and the downstream part. (32) of the main coupling element (3) forms the housing of said ball joint.
1 1. Dispositif selon l'une quelconque des revendications 1 à 10, caractérisé en ce que le logement de rotule d'au moins un des ensembles rotulaires (5, 7) comprend au moins deux parties distinctes (5a, 5b, 7a, 7b) maintenues ensemble par des moyens de fixation.1 1. Device according to any one of claims 1 to 10, characterized in that the ball housing of at least one of the rotatable assemblies (5, 7) comprises at least two separate parts (5a, 5b, 7a, 7b ) held together by fixing means.
12. Dispositif selon la revendication 11 , caractérisé en ce que les moyens de fixation comprennent un collier de serrage (8, 9). 12. Device according to claim 11, characterized in that the fixing means comprise a clamp (8, 9).
13. Dispositif selon l'une quelconque des revendications 11 et 12, caractérisé en ce que les moyens de fixation comprennent des moyens de vissage de l'une (5b, 7b) desdites deux parties distinctes (5a, 5b, 7a, 7b) sur l'autre (5a, 7a).13. Device according to any one of claims 11 and 12, characterized in that the fixing means comprise means for screwing one (5b, 7b) of said two separate parts (5a, 5b, 7a, 7b) on the other (5a, 7a).
14. Dispositif selon l'une quelconque des revendications 1 à 13, caractérisé en ce qu'il comprend au moins un orifice de purge14. Device according to any one of claims 1 to 13, characterized in that it comprises at least one purge port
(10, 1 1 ).(10, 1 1).
15. Dispositif selon l'une quelconque des revendications 1 à 14, caractérisé en ce qu'au moins un des deux ensembles rotulaires (5, 7) comprend un joint d'étanchéité (12, 13) entre la rotule et 0 son logement.15. Device according to any one of claims 1 to 14, characterized in that at least one of the two sets of rotundas (5, 7) comprises a seal (12, 13) between the patella and 0 housing.
16. Dispositif selon l'une quelconque des revendications 1 à 15, caractérisé en ce que la partie amont (31) de l'élément principal de raccord (3) possède une structure quasi-identique soit à celle du deuxième l'élément de raccord latéral (6) soit à celle de la 5 partie aval (32) de l'élément principal de raccord (3).16. Device according to any one of claims 1 to 15, characterized in that the upstream portion (31) of the main connecting element (3) has a substantially identical structure to that of the second connecting element lateral (6) to that of the downstream part (32) of the main coupling element (3).
17. Dispositif selon l'une quelconque des revendications 1 à 16, caractérisé en ce que la structure du premier élément latéral de raccord (4) est quasi-identique soit à celle du deuxième élément latéral de raccord (6), soit à celle de la partie aval (32) de o l'élément principal de raccord (3). 17. Device according to any one of claims 1 to 16, characterized in that the structure of the first lateral connecting element (4) is almost identical to either that of the second lateral connecting element (6), or to that of the downstream portion (32) of the main coupling element (3).
PCT/FR2006/001474 2005-06-24 2006-06-26 Rotular connection device for pipelines WO2006136737A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0506476A FR2887608A1 (en) 2005-06-24 2005-06-24 High temperature and high pressure vapor exhaust valve outlet and pipe`s ball and socket connection device for reactor, has drainage ports, and lateral connection elements to form upstream and downstream ball and socket assemblies
FR0506476 2005-06-24
FR0605708A FR2888913A1 (en) 2005-06-24 2006-06-26 Rotular connection device for pipeline, has two lateral connection elements forming rotular assemblies with upstream and downstream parts, respectively, and adapter elements having central and two intermediary connection elements

Publications (1)

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WO2006136737A1 true WO2006136737A1 (en) 2006-12-28

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Citations (8)

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Publication number Priority date Publication date Assignee Title
US2955850A (en) * 1956-11-15 1960-10-11 Strachan & Henshaw Ltd Pipe coupling having telescopic and lateral compensating means
NL6404023A (en) * 1963-05-22 1964-11-23
US4087323A (en) * 1976-12-09 1978-05-02 The United States Of America As Represented By The United States Department Of Energy Pipe connector
NL7801531A (en) * 1978-02-10 1979-08-14 Bos Kalis Westminster Dredger pipe hinged coupling - has inner ball shaped fitting and connecting flange for pipe union with front flange connecting piece bolted to it
DE3206653A1 (en) * 1982-02-24 1983-09-01 Interatom Internationale Atomreaktorbau Gmbh, 5060 Bergisch Gladbach Pipeline compensator having six degrees of freedom
US4779901A (en) * 1983-12-29 1988-10-25 Eg&G Pressure Science, Inc. Sealed rigid pipe joint
DE10158983A1 (en) * 2001-11-30 2003-10-02 Vaf Voigt Armaturenfabrikation Socket connection for end of pipe has spherical joint with sealing ring to enable two pipes to be connected together at angle
EP1394460A1 (en) * 2002-08-29 2004-03-03 Waterworks Technology Development Organization Co., Ltd. Flexible pipe joint

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2955850A (en) * 1956-11-15 1960-10-11 Strachan & Henshaw Ltd Pipe coupling having telescopic and lateral compensating means
NL6404023A (en) * 1963-05-22 1964-11-23
US4087323A (en) * 1976-12-09 1978-05-02 The United States Of America As Represented By The United States Department Of Energy Pipe connector
NL7801531A (en) * 1978-02-10 1979-08-14 Bos Kalis Westminster Dredger pipe hinged coupling - has inner ball shaped fitting and connecting flange for pipe union with front flange connecting piece bolted to it
DE3206653A1 (en) * 1982-02-24 1983-09-01 Interatom Internationale Atomreaktorbau Gmbh, 5060 Bergisch Gladbach Pipeline compensator having six degrees of freedom
US4779901A (en) * 1983-12-29 1988-10-25 Eg&G Pressure Science, Inc. Sealed rigid pipe joint
DE10158983A1 (en) * 2001-11-30 2003-10-02 Vaf Voigt Armaturenfabrikation Socket connection for end of pipe has spherical joint with sealing ring to enable two pipes to be connected together at angle
EP1394460A1 (en) * 2002-08-29 2004-03-03 Waterworks Technology Development Organization Co., Ltd. Flexible pipe joint

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