US20050008504A1 - Coupling for cryogenic media - Google Patents

Coupling for cryogenic media Download PDF

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Publication number
US20050008504A1
US20050008504A1 US10/847,477 US84747704A US2005008504A1 US 20050008504 A1 US20050008504 A1 US 20050008504A1 US 84747704 A US84747704 A US 84747704A US 2005008504 A1 US2005008504 A1 US 2005008504A1
Authority
US
United States
Prior art keywords
coupling
plug
socket
rotating ring
assigned
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.)
Abandoned
Application number
US10/847,477
Other languages
English (en)
Inventor
Wilfried-Henning Reese
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.)
Linde GmbH
Original Assignee
Linde GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Linde GmbH filed Critical Linde GmbH
Assigned to LINDE AKTIENGESELLSCHAFT reassignment LINDE AKTIENGESELLSCHAFT ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: REESE, WILFRIED-HENNING
Publication of US20050008504A1 publication Critical patent/US20050008504A1/en
Abandoned legal-status Critical Current

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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
    • F16L37/00—Couplings of the quick-acting type
    • F16L37/28—Couplings of the quick-acting type with fluid cut-off means
    • F16L37/30—Couplings of the quick-acting type with fluid cut-off means with fluid cut-off means in each of two pipe-end fittings
    • F16L37/373—Couplings of the quick-acting type with fluid cut-off means with fluid cut-off means in each of two pipe-end fittings with two taps or cocks
    • 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
    • F16L59/00—Thermal insulation in general
    • F16L59/14—Arrangements for the insulation of pipes or pipe systems
    • F16L59/16—Arrangements specially adapted to local requirements at flanges, junctions, valves or the like
    • F16L59/18—Arrangements specially adapted to local requirements at flanges, junctions, valves or the like adapted for joints

Definitions

  • the invention relates to a coupling, particularly for cryogenic media and liquefied natural gas, having
  • the invention also comprises
  • the invention also relates to the use of such a coupling.
  • cryogenic medium in the following, the designations of special cryogenic medium will be preceded corresponding to their state of aggregation by the letters “G” for “gaseous” and “L” for “liquid”; thus, for example, GH 2 or LH 2 for gaseous or liquid hydrogen respectively.
  • CNG CNG
  • LNG LNG
  • Hydrogen and natural gas are currently becoming more and more significant as energy carriers because of the rising demand for energy and increased environmental awareness.
  • trucks, buses, passenger cars and railroad engines are already driven by means of natural-gas or hydrogen-operated engines.
  • first attempts are being made to power airplanes by means of the above-mentioned media.
  • the storage of the hydrogen or natural gas “on board” the above-mentioned means of transport makes the most sense in liquid form.
  • the hydrogen and LNG have to be cooled to approximately 25 K. and 112 K. respectively and have to be maintained at this temperature, which can be implemented only by corresponding insulating measures at the storage containers or tanks.
  • storage in the gaseous state in the above-mentioned means of transport is less advantageous because the storage has to take place in large-volume, heavy storage tanks at high pressures.
  • German Patent Document DE-A 41 04 711 describes a conventional coupling of the above-mentioned type.
  • the principle of such a coupling is based on a system in which two ball valves—one on the plug side and one of the socket side—are flanged to one another.
  • a vacuum-insulated fill pipe moves through the passage bores of the ball valves from the plug side, through which fill pipe the (cryogenic) medium flows to the socket side of the coupling.
  • the plug moves back, and the ball valves are closed again.
  • the mutual flanging of the ball valves is separated.
  • a refueling coupling of this type permits an overfilling of (cryogenic) liquids, while, on the outside, a cooling of the visible components cannot be detected.
  • the plug-side ball valve For automatic applications, for example, such as refueling by means of a so-called refueling robot, it becomes possible to actuate the plug-side ball valve by means of a hydraulic or pneumatic drive.
  • the socket-side ball valve is opened in the same manner as during the manual operation by way of a gearwheel, which engages during the linking-up of the coupling flanges.
  • the torsional axes of the ball valves have to be situated in a plane, so that the teeth of the gearwheel drive also engage in a plane.
  • the gearwheels are exposed to considerable dirt contamination due to weather influences. Because of the narrow tolerances, which exist in the case of a toothing, any dirt contamination may lead to jamming of the gearwheels and to increased wear.
  • the two ball valves are not immediately connected with one another or moved into an operative connection with one another during the connecting of the coupling plug and the coupling socket, but rather when the actual connection operation between the coupling plug and the coupling socket has already been concluded.
  • the coupling flanges can first be connected with one another in the conventional manner, but without the possibility of an occurrence of previous restrictions by an inexact axial guidance and mutual engagement of the pairs of gearwheels.
  • the coupling according to the invention as well as further developments of the latter will be explained in detail in relation to the embodiment illustrated in the figure.
  • the figure shows a perspective partial representation of a possible embodiment of the coupling according to the invention.
  • the coupling has a plug-side flange 9 and a socket-side flange 10 which are form-lockingly connected with one another by means of a clamping 8 .
  • the actual coupling operation between the coupling plug and the coupling socket will be concluded when the clamping-together 8 of the two flanges 9 and 10 has taken place.
  • the coupling has a plug-side rotating ring 3 as well as a socket-side rotating ring 4 .
  • the two rotating rings 3 and 4 can be rotated about the longitudinal axis of the coupling plug and the coupling socket (illustrated by the two wide arrows).
  • the plug-side rotating ring 3 can be displaced in the longitudinal direction of the coupling plug (illustrated by the narrow arrow). While the plug-side rotating ring 3 is in an operative connection with the plug-side ball valve 1 , the socket-side rotating ring 4 is in an operative connection with the socket-side ball valve 2 .
  • the rotating ring 3 assigned to the coupling plug does not have to be in an operative connection with the plug-side ball valve 1 .
  • the plug-side ball valve 1 can be moved by an arbitrary driving device—such as, for example, another rotating ring which is independent of the rotating ring 3 assigned to the coupling plug, a hydraulic or pneumatic piston drive, or an electric-motor drive.
  • the plug side ball valve 1 can be operatively connected to both the rotating ring 3 and an arbitrary driving device.
  • the opening of the ball valves 1 and 2 takes place in that the plug-side rotating ring 3 is displaced by means of a defined advancing force in the direction of the socket-side rotating ring 4 .
  • the two rotating rings 3 and 4 have notches on their faces so that they can be mutually connected in a form-locking and force-locking manner. In such an embodiment, the notches of the plug-side rotating ring 3 engage with the notches of the socket-side rotating ring 4 .
  • the plug-side rotating ring 3 is rotated about its longitudinal axis by the customer, the operating personnel and/or automatically.
  • the defined advancing force is preferably maintained in this case.
  • the displacing and/or rotating movement of the plug-side rotating ring 3 can take place by means of a hydraulic, pneumatic or electric drive.
  • the socket-side rotating ring 4 is immediately rotated along as a result of the form-locking and force-locking. If no engagement exists yet between the two rotating rings 3 and 4 because, for example, the notch heads are matched up in front of one another, the plug-side rotating ring will at first rotate by a notch head width, without taking along the socket-side rotating ring. However, subsequently, the plug-side notch head will engage in the notch base of the socket-side rotating ring 4 , if the defined advancing force of the plug-side rotating ring 3 was maintained.
  • the angle difference resulting from the above-described slight rotation—compared with the immediate engagement of the two rotating rings 3 and 4 can be tolerated because of the minimal size of the angle.
  • the two rotating rings 3 and 4 are connected with ring gears 5 and 11 , which are situated in an area of the respective connection side not visible on the outside and protected from becoming dirty.
  • the above-mentioned ring gears 5 and 11 drive the drive shafts 7 and 13 of the ball valves 1 and 2 by way of pinion gears 6 and 12 .
  • a defined angular rotation of the rotating rings 3 and 4 therefore results in a 90°-rotation of the ball valves 1 and 2 or their balls defined by the transmission ratio of the ring gears and bevel gears.
  • the two ball valves 1 and 2 are opened or closed in a synchronous manner. If the plug-side ball valve 1 is moved by means of a driving device other than the above-described driving device, this plug-side ball valve 1 can be opened or closed also in an asynchronous manner with respect to the socket-side ball valve 2 .
  • the vacuum-insulated fill pipe 14 moves through the passage bores of the ball valves 1 and 2 , and the filling operation can start.
  • the fill pipe 14 is withdrawn and the ball valves 1 and 2 are closed again in the reverse sequence.
  • the clamping connection 8 of the coupling flanges 9 and 10 can be opened up and the coupling plug and coupling socket can thus be separated from one another.
  • the rotating rings 3 and 4 or their mutually abutting head sides may have a friction lining or friction linings.
  • a conical construction of the head sides of the rotating rings 3 and 4 is also conceivable.
  • the torque required for rotating the balls of the ball valves 1 and 2 will then be transmitted by friction.
  • the normal force (pressure force) required for this purpose is generated by way of the above-explained defined advancing force of the plug-side rotating ring 3 .

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Taps Or Cocks (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)
  • Supporting Of Heads In Record-Carrier Devices (AREA)
  • Joints Allowing Movement (AREA)
  • Thermal Insulation (AREA)
  • Materials For Medical Uses (AREA)
  • Compositions Of Oxide Ceramics (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
US10/847,477 2001-11-19 2004-05-18 Coupling for cryogenic media Abandoned US20050008504A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10156740.5 2001-11-19
DE10156740A DE10156740A1 (de) 2001-11-19 2001-11-19 Kupplung für kryogene Medien
PCT/EP2002/012348 WO2003044417A1 (fr) 2001-11-19 2002-11-05 Raccord pour milieux cryogeniques

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2002/012348 Continuation WO2003044417A1 (fr) 2001-11-19 2002-11-05 Raccord pour milieux cryogeniques

Publications (1)

Publication Number Publication Date
US20050008504A1 true US20050008504A1 (en) 2005-01-13

Family

ID=7706234

Family Applications (1)

Application Number Title Priority Date Filing Date
US10/847,477 Abandoned US20050008504A1 (en) 2001-11-19 2004-05-18 Coupling for cryogenic media

Country Status (7)

Country Link
US (1) US20050008504A1 (fr)
EP (1) EP1446606B1 (fr)
JP (1) JP4176641B2 (fr)
AT (1) ATE434149T1 (fr)
AU (1) AU2002361955A1 (fr)
DE (2) DE10156740A1 (fr)
WO (1) WO2003044417A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070277874A1 (en) * 2006-05-31 2007-12-06 David Francis Dawson-Elli Thin film photovoltaic structure

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101996909B1 (ko) * 2017-12-29 2019-07-05 레드원테크놀러지 주식회사 가스 커플링 장치

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4523740A (en) * 1981-10-01 1985-06-18 Hayward Industries Rotatable unitary ball valve
US6079446A (en) * 1997-06-30 2000-06-27 Messer Griesheim Gmbh & Co. Coupling for connecting vacuum-insulated line ends
US6220290B1 (en) * 1997-12-09 2001-04-24 Alco Hi-Tek Ltd. Double block and bleed ball valves including retainer components

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4104711C2 (de) * 1991-02-15 1995-08-24 Linde Ag Kupplung für vakuumisolierte Rohr- oder Schlauchleitungen und Verwendung einer derartigen Kupplung
DE4219912A1 (de) * 1992-06-17 1993-12-23 Linde Ag Kupplung für vakuumisolierte Rohr- oder Schlauchleitungen und Verfahren zum Kaltfahren eines Speicherbehälters unter Verwendung dieser Kupplung
DE10001207A1 (de) * 2000-01-14 2001-07-19 Linde Gas Ag Ein- oder mehrflutige Kupplung für vakuumisolierte Rohr- oder Schlauchleitungen

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4523740A (en) * 1981-10-01 1985-06-18 Hayward Industries Rotatable unitary ball valve
US6079446A (en) * 1997-06-30 2000-06-27 Messer Griesheim Gmbh & Co. Coupling for connecting vacuum-insulated line ends
US6220290B1 (en) * 1997-12-09 2001-04-24 Alco Hi-Tek Ltd. Double block and bleed ball valves including retainer components

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070277874A1 (en) * 2006-05-31 2007-12-06 David Francis Dawson-Elli Thin film photovoltaic structure

Also Published As

Publication number Publication date
AU2002361955A1 (en) 2003-06-10
EP1446606B1 (fr) 2009-06-17
JP2005509825A (ja) 2005-04-14
JP4176641B2 (ja) 2008-11-05
DE50213622D1 (de) 2009-07-30
DE10156740A1 (de) 2003-05-28
WO2003044417A1 (fr) 2003-05-30
ATE434149T1 (de) 2009-07-15
EP1446606A1 (fr) 2004-08-18

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Legal Events

Date Code Title Description
AS Assignment

Owner name: LINDE AKTIENGESELLSCHAFT, GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:REESE, WILFRIED-HENNING;REEL/FRAME:015796/0766

Effective date: 20040527

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO PAY ISSUE FEE