EP0595172B1 - Système pour la récupération des vapeurs pendant le chargement et le déchargement de véhicules citernes - Google Patents

Système pour la récupération des vapeurs pendant le chargement et le déchargement de véhicules citernes Download PDF

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Publication number
EP0595172B1
EP0595172B1 EP93116919A EP93116919A EP0595172B1 EP 0595172 B1 EP0595172 B1 EP 0595172B1 EP 93116919 A EP93116919 A EP 93116919A EP 93116919 A EP93116919 A EP 93116919A EP 0595172 B1 EP0595172 B1 EP 0595172B1
Authority
EP
European Patent Office
Prior art keywords
gas
connection
line
valve
breather valve
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.)
Expired - Lifetime
Application number
EP93116919A
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German (de)
English (en)
Other versions
EP0595172A1 (fr
Inventor
Erich Morgenstern
Heinz Koschubat
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
FA Sening GmbH
Original Assignee
FA Sening GmbH
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Filing date
Publication date
Application filed by FA Sening GmbH filed Critical FA Sening GmbH
Priority to DE9321305U priority Critical patent/DE9321305U1/de
Publication of EP0595172A1 publication Critical patent/EP0595172A1/fr
Application granted granted Critical
Publication of EP0595172B1 publication Critical patent/EP0595172B1/fr
Anticipated expiration legal-status Critical
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
    • B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
    • B67D7/00—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes
    • B67D7/04—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes for transferring fuels, lubricants or mixed fuels and lubricants
    • B67D7/0476—Vapour recovery systems
    • B67D7/0478—Vapour recovery systems constructional features or components

Definitions

  • the invention relates to a system for gas recirculation during the loading and unloading of tank vehicles according to the preamble of claim 1.
  • the loading and unloading of tanker vehicles is now mainly carried out with the support of gas exchange between the tanker truck and the connected tank.
  • the tank compartments of the tank vehicle to be filled are connected to a gas return line that leads to a gas collection station.
  • the gas displaced by the filled product leaves the tanker via the gas return line.
  • so-called gas suspension lines are used, through which the gas displaced from the tank at the service station is returned to the tanker vehicle.
  • gas hoses of different diameters are generally used. Since the loading of the tanker vehicle and the delivery from a tanker vehicle generally also take place from different sides of the vehicle, different connections are normally used for the gas return lines or the gas pendulum lines.
  • the invention has for its object to provide a system for gas recirculation when loading and unloading tankers, which allows a great simplification of the piping and fittings requirements for a tanker, reduces costs and facilitates handling.
  • the individual tank compartments of the tanker vehicle are connected to a common gas manifold to which both the gas return line and a gas return line can be connected, the gas return line and the gas return line being alternatively lockable.
  • a common gas manifold to which both the gas return line and a gas return line can be connected, the gas return line and the gas return line being alternatively lockable.
  • two gas pendulum lines can be connected to the gas manifold at the same time.
  • the breathing valve for stationary pressure equalization of the tank compartments is spatially adjacent to the one or more connections for the gas pendulum lines and is also connected to the gas manifold.
  • a gas pendulum distributor is preferably provided, which is designed as a unitary assembly with two connections for two gas pendulum lines.
  • the connections for the gas suspension lines are provided with two check valves.
  • the breathing valve is also integrated in the assembly.
  • the actuation axis of the breathing valve is aligned coaxially with the actuation axis of a check valve. This takes place in particular in that the springs used for the valves lie coaxially one inside the other.
  • the breathing valve can be made larger than necessary for safety, so that it can serve as a vent for the tank compartments in the event that a gas return hose is accidentally not connected.
  • the enlarged valve cross-section also allows a corresponding connector on Breathing valve is provided to use this directly as a connection for the gas return hose.
  • the gas pendulum hoses used are usually wound on reels, it is preferably provided that a double reel is used for this purpose, in the connection area of which the gas pendulum distributor is accommodated.
  • the gas pendulum line connections of the gas pendulum distributor lead directly into the axes of rotation of the reels on swivel couplings, via which the gas to be commuted is transferred from the coiled gas pendulum hoses.
  • a preferred gas pendulum distributor has a housing with a breather chamber connected to the gas manifold of the tank vehicle. Two spring-operated non-return valves are provided in the housing for independent connection of the breather chamber to the gas suspension lines. Furthermore, a breathing valve pneumatically actuated against the force of a compression spring is provided to close the venting chamber from the surroundings.
  • the gas manifold is used both for gas recirculation when loading the tanker vehicle and for gas oscillation when dispensing the products to be dispensed from the tank.
  • a gas return hose is normally connected to the gas return pipe of the gas manifold.
  • the pressure in the gas manifold closes the check valves of the gas pendulum connections.
  • the breathing valve can be closed pneumatically. This even makes it possible to dispense with the valve that is usually used in the connecting piece of the gas return line, since the gas manifold is otherwise completely blocked.
  • the system according to the invention allows a great simplification of the line structure and a reduction in the number of fittings required. By Integration of still necessary fittings can be achieved by further simplifying the apparatus. In particular, this also significantly reduces costs.
  • FIG. 1 shows an inventive system in principle.
  • a tank compartment 35 of a tanker vehicle is shown, on the top of which a toggle valve and a permanent fire protection device 36 are provided. Such valves are known per se.
  • the tank compartment 35 is connected to a gas collecting line 38 via a connecting line 37. Accordingly, all other compartments of the tanker, for example six, are also connected to the common gas manifold 38.
  • the tank compartments 35 are thus also in gas exchange with one another.
  • the gas manifold 38 leads via a connecting line 41 and a cross line 42 to the gas pendulum distributor 34, which is arranged in particular laterally on the underside of the tanker vehicle.
  • a gas return pipe 40 On the opposite side of the gas pendulum distributor on the other side of the vehicle there is a gas return pipe 40 to which a gas return line can be connected.
  • a valve 39 in the cross line 42 is opened.
  • the valve 39 closes, so that the gas return line to be connected is directly connected to the gas collecting line 38 via the connecting line 41.
  • valve 39 can also be dispensed with.
  • the gas pendulum distributor 34 has gas pendulum connections 30, to which the gas pendulum hoses can be connected when emptying one or more tank compartments 35.
  • the gas pendulum distributor 34 also has a breathing valve 33, which serves to equalize the pressure in the stationary state, in particular while the tanker is traveling. This breathing valve 33 is open in the stationary state, while it is closed when products are being delivered from the tanker vehicle, since gas is returned via the gas pendulum connector 30 from a tank of the gas station via the gas manifold 38 into the tank compartment 35 to be emptied.
  • the breathing valve 33 must be closed in order not to cause the gas to escape into the atmosphere.
  • FIG. 2A shows the state of loading of the tank vehicle.
  • the changeover valve 39 is closed and the gas escaping from the tank compartment 35 leads via the gas manifold 38, the gas return pipe 40 and the connected gas return hose to the gas collection point of the refinery.
  • the valve cross section of the breathing valve 33 is oversized compared to its actual breathing function.
  • the breathing valve 33 itself takes over the function of the gas return pipe 40.
  • the gas return hose is connected to the breathing valve 33 instead of the gas return connection 40, the housing of which has a corresponding connection design.
  • the breathing valve 33 is opened either pneumatically or by manual operation.
  • This special design of the breathing valve has the advantage that both the loading and the unloading can take place from the same side of the tanker.
  • it can also be provided to provide a gas pendulum distributor 34 with a breathing valve 33 on both sides of the vehicle. The loading and unloading of the vehicle can therefore alternatively be carried out from both sides.
  • An additional gas return pipe 40 with changeover valve 39 can be dispensed with.
  • the operating state of the delivery shown in FIG. 2D shows an open gas pendulum connection 30 with a closed breathing valve 33.
  • the gas return pipe 40 is also closed while the changeover valve 39 is open. This allows gas to be returned from the tank at the service station to the tanker when products are delivered from the tanker.
  • Fig. 3 shows a gas pendulum distributor 34 in section.
  • two gas pendulum connections 30, 31 are provided, to which two gas pendulum lines can be connected at the same time. It is therefore possible to swing two different products at a time, the gases leading to the tanker vehicle mixing in the gas pendulum distributor 34 shown in the venting chamber 29.
  • Each of the gas pendulum connections 30, 31 has a check valve to the venting space 29.
  • the check valves are spring-loaded by means of the springs 11. The check valves are closed in the idle state.
  • the check valves contain a sealing plate 9, which is supported by a spring 11 against an opposite housing part, in particular the cover part 2.
  • the spring 11 is guided via a bushing 8 fastened in the opposite housing part 2 by means of a clamping sleeve 26.
  • the spring 11 surrounds the bushing 8.
  • valve plate or valves 9 rise and allow the gas to flow into the venting space 29, from which they are transferred to the gas manifold 38.
  • the check valves prevent mixing of the suspended gases in the underground tanks themselves.
  • valve plates 9 of the non-return valves have lip seals 12.
  • the spring-loaded piston 6 of the breathing valve 33 is integrated in one of the bushings 8 guiding the springs 11 of the check valves.
  • the underside of the spring 10 acts against a disc 7, which rests on a retaining ring 24 mounted in a lower groove of the bushing 8.
  • the piston 6 of the breathing valve 33 is located on the upper side of the spring 10, the cylinder space being sealed off from the bush 8 by a sealing ring 13 and from the cover 2 by a seal 15.
  • the connecting line between the connection 18 and the actuation chamber of the breathing valve 33 is closed on one side by means of a threaded pin 22 with respect to the vent chamber 29.
  • the piston rod 5 is connected to the piston 6 via a cylinder pin 23.
  • valve plate 4 At the upper end of the piston rod 5 of the breathing valve 33 is the valve plate 4, which is provided with an O-ring 14 around the breathing valve to close relative to the housing part or cover 2, and which is attached to the piston rod 5 by means of a washer 28 and a nut 25.
  • the spring force of the spring 10 causes the breathing valve 33 to be opened.
  • the piston 6 of the breathing valve 33 is guided downward and the breathing valve 33 is closed. It is therefore ensured that if the control air supply fails and the vehicle comes to a standstill, the breathing valve 33 remains constantly open.
  • a protective cap 3 which is connected to the housing 1, 2 of the gas pendulum distributor 34 via hexagon screws 21.
  • the protective cap 3 has free spaces in order to let the gas flowing out of the breathing valve 33 into the atmosphere.
  • the housing 1, 2 of the gas pendulum distributor 34 is formed in two parts, the valve seats of the check valves being provided in the lower part 1 and the breathing valve 33 in the cover part.
  • the housing parts 1 and 2 are connected by means of stud bolts 19, the housing parts 1 and 2 being connected via a O-ring 16 are sealed against each other.
  • FIG. 4 shows a gas pendulum distributor 34 in a side view along the section line A-A of FIG. 1.
  • the gas pendulum connector 30 is shown, from which inflowing gas is transferred into the venting chamber 29.
  • the vent chamber 29 leads to the gas collecting connection 32.
  • the cover part 2 of the gas pendulum distributor 34 is fastened by means of stud bolts 19 which are fastened on the top of the cover part 2 with cap nuts 20 and a washer 17.
  • Fig. 5 shows a plan view of a gas pendulum distributor 34, wherein the protective cap 3 is shown with its attachment by means of hexagon screws 21 which are fastened in insert sockets 27 of the housing of the gas pendulum distributor 34. Furthermore, the connection 18 for a compressed air supply is shown.
  • FIG. 6 shows a schematic view of a double reel.
  • Two reels 43, 44 arranged parallel to one another on a coaxial axis are shown. These carry the gas pendulum hoses 47, 48.
  • In the axis of the Reels are provided with rotating couplings 45, 46, which enable a gas-tight connection of the gas pendulum hoses 47, 48 to the gas pendulum connections 30, 31 of the gas pendulum distributor 34.
  • This is located centrally between the two reels 43, 44 and is connected to the gas collecting connection 32.
  • the system makes it possible to keep two gas pendulum hoses 47, 48 in stock on the tanker vehicle, which can be used individually or together.
  • the gas pendulum distributor 34 is accommodated between the two reels 43, 44 to save space. It can also be provided that a double reel 43, 44 with an intermediate gas pendulum distributor 34 is arranged on each side of the vehicle.
  • FIG. 7 shows a further improvement of the breathing valve 33.
  • An intermediate holder 49 is provided, which can be actuated by control air supplied via the connection 18.
  • the breathing valve 33 is closed against the force of the spring 10.
  • the piston rod 5 of the breathing valve 33 is, however, prestressed by a spring 50 in the sleeve-shaped intermediate holder 49, which corresponds to the piston in FIG. 3. Therefore, should an increased pressure occur on the underside of the breathing valve 33, the breathing valve 33 opens against the force of the spring 50, even if control air is present to shut off the breathing valve 33.
  • This design of the breathing valve 33 makes it possible to dispense entirely with the changeover valve 39, since even when the gas return hose is not connected by mistake, an impermissibly high pressure cannot build up in the gas manifold. In this case, the breathing valve is closed by the control air even when the tank truck is loaded.
  • the safety valve is therefore independent of pressure fluctuations in the compressed air supply. If, however, this can be kept stable, e.g. B. by means of a pressure limiter, the switching pressure of the breathing valve could also be set so precisely that the additional safety function by means of intermediate holder 49 and spring 50 can be dispensed with.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Claims (14)

  1. Système pour le retour de gaz lors du chargement et du déchargement de véhicules citernes comportant un raccordement apte à être coupé (30, 31) pour une conduite de déplacement de gaz en vue du raccordement à une citerne à remplir, un raccordement apte à être coupé (40) pour une conduite de retour de gaz destinée au raccordement à une station de chargement, et un reniflard (33) destiné à compenser les variations de pression statiques dans le véhicule citerne,
       caractérisé en ce que les différents compartiments (35) du véhicule citerne sont raccordés à une conduite collectrice de gaz commune (38), et en ce que le raccordement (40) pour la conduite de retour de gaz, le raccordement (30, 31) pour la conduite de déplacement de gaz et le reniflard (33) sont raccordés à la conduite collectrice de gaz (38), les raccordements (40) pour la conduite de retour de gaz et les raccordements (30, 31) pour la conduite de déplacement de gaz étant aptes à être fermés en alternance.
  2. Système selon la revendication 1, caractérisé en ce qu'il est prévu un distributeur de déplacement de gaz (34) qui prévoit le raccordement simultané d'au moins deux conduites de déplacement de gaz à la conduite collectrice de gaz (38).
  3. Système selon la revendication 1 ou 2, caractérisé en ce que le reniflard (33) est voisin, dans l'espace, du raccordement (30, 31) prévu pour les conduites de déplacement de gaz.
  4. Système selon les revendications 2 et 3, caractérisé en ce que le distributeur de déplacement de gaz (34) est conçu comme un sous-groupe homogène comprenant deux raccordements (30, 31) pourvus de clapets anti-retour pour deux conduites de déplacement de gaz, et le reniflard (33) intégré audit sous-groupe.
  5. Système selon la revendication 4, caractérisé en ce que le distributeur de déplacement de gaz comporte un raccordement apte à être coupé pour un retour de gaz.
  6. Système selon la revendication 4, caractérisé en ce que l'axe d'actionnement du reniflard (33) est aligné sur celui d'un clapet anti-retour.
  7. Système selon la revendication 4, caractérisé en ce que le reniflard (33) comporte un raccordement pour une conduite de retour de gaz.
  8. Système selon l'une au moins des revendications 4 à 7, caractérisé en ce que le distributeur de déplacement de gaz (34) est disposé, dans l'espace, entre deux treuils (43, 44) destinés à enrouler deux conduites de déplacement de gaz (47, 48), et les raccordements (30, 31) prévus pour les conduites de déplacement de gaz mènent à des accouplements rotatifs (45, 46) des treuils (43, 44) en vue de la liaison avec lesdites conduites de déplacement de gaz (47, 48).
  9. Système selon la revendication 8, caractérisé en ce qu'il est prévu, de chaque côté du véhicule citerne, un double treuil (43, 44) pourvu d'un distributeur de déplacement de gaz (34), les deux doubles treuils menant à une conduite collectrice de gaz commune (38).
  10. Système selon l'une au moins des revendications précédentes, caractérisé en ce qu'il est prévu, sur la conduite collectrice de gaz, une soupape de sûreté destinée à décharger une surpression dans ladite conduite collectrice.
  11. Système selon l'une au moins des revendications précédentes, caractérisé en ce que le reniflard est apte à être fermé grâce à un signal de commande.
  12. Système selon les revendications 10 et 11, caractérisé en ce que la soupape de sûreté est combinée avec le reniflard pour former une unité dans l'espace.
  13. Système selon les revendications 4, 6, 11 ou 12, caractérisé en ce que le distributeur de déplacement de gaz (34) comporte un carter (1) pourvu d'un espace de purge (29) relié à la conduite collectrice de gaz (38), en ce que le carter (1, 2) contient deux clapets anti-retour actionnés par la force d'un ressort et destinés à la liaison indépendante entre ledit espace de purge (29) et les conduites de déplacement de gaz, et en ce qu'il est prévu un reniflard (33) actionné par air comprimé à l'encontre de la force d'un ressort de pression (10) et destiné à fermer l'espace de purge (29) par rapport à l'environnement, le ressort de pression (10) du reniflard (33) étant disposé coaxialement par rapport à un ressort (11) d'un clapet anti-retour.
  14. Système selon la revendication 12 ou 13, caractérisé en ce que le reniflard est logé, en étant précontraint par un premier ressort (50), dans un support intermédiaire (49) qui est actionné par air comprimé à l'encontre de la force d'un second ressort (ressort de pression 10) pour fermer le reniflard lors de l'application d'air de commande et pour le rouvrir à l'encontre de la force du premier ressort (50) en cas de surpression dans la conduite collectrice de gaz.
EP93116919A 1992-10-29 1993-10-20 Système pour la récupération des vapeurs pendant le chargement et le déchargement de véhicules citernes Expired - Lifetime EP0595172B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE9321305U DE9321305U1 (de) 1992-10-29 1993-10-20 System zur Gasrückführung beim Be- und Entladen von Tankfahrzeugen

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4236591A DE4236591C1 (de) 1992-10-29 1992-10-29 System zur Gasrückführung beim Be- und Entladen von Tankfahrzeugen
DE4236591 1992-10-29

Publications (2)

Publication Number Publication Date
EP0595172A1 EP0595172A1 (fr) 1994-05-04
EP0595172B1 true EP0595172B1 (fr) 1996-01-10

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EP93116919A Expired - Lifetime EP0595172B1 (fr) 1992-10-29 1993-10-20 Système pour la récupération des vapeurs pendant le chargement et le déchargement de véhicules citernes

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EP (1) EP0595172B1 (fr)
AT (1) ATE132834T1 (fr)
DE (2) DE4236591C1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19526063C2 (de) * 1994-03-03 1998-11-19 Sening Fa F A Detonations- und Dauerbrandlüfter zur Sicherung des Be- und Entladens eines Tankfahrzeuges
DE4407055C1 (de) * 1994-03-03 1995-03-16 Sening Fa F A System zur Gasrückführung beim Be- und Entladen eines Tankfahrzeuges
DE102017216688A1 (de) 2017-09-20 2019-03-21 Audi Ag Versorgungsmodul für eine Elektrofahrzeugladestation und Elektrofahrzeug

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4009781A1 (de) * 1990-03-27 1991-10-02 Sening Fa F A System zur gasrueckfuehrung beim be- und entladen von tankfahrzeugen
DE9011750U1 (de) * 1990-08-13 1990-11-29 Niehüser, Hermann, Dipl.-Ing., 4831 Langenberg Ventilanordnung an einem Tankfahrzeug zur Gaspendelung und Gasrückführung

Also Published As

Publication number Publication date
DE59301407D1 (de) 1996-02-22
DE4236591C1 (de) 1993-10-21
ATE132834T1 (de) 1996-01-15
EP0595172A1 (fr) 1994-05-04

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