Coupling, particularly for lng

Abstract

In order to provide an operationally secure coupling for connecting a coupling housing ( 11 ) to a nipple, which are provided for feeding a cryogenic medium, particularly LNG, to a vehicle tank, a hand lever ( 15 ) is arranged in a pivotable way on the coupling housing ( 11 ) for the connection thereof. According to the invention, on the coupling housing ( 11 ) adjacent to the hand lever ( 15 ) a control block ( 20 ) having at least one locking element ( 21 ) is provided, which locks the hand lever ( 15 ) in the connecting position.

1 . A coupling for connecting a coupling housing to a nipple, which are provided for feeding a cryogenic medium, in particular LNG to a vehicle tank, wherein a hand lever is pivotably arranged at the coupling housing for connecting, wherein a control block is arranged at the coupling housing adjacent to the hand lever and includes at least one locking element, which locks the hand lever in connecting position. 
     
     
         2 . The coupling according to  claim 1 , wherein the locking element is formed as a check piston being extensible in transverse direction to the pivoting plane of the hand lever. 
     
     
         3 . The coupling according to  claim 1 , wherein the control block includes two locking elements aligned in opposite directions. 
     
     
         4 . The coupling according to  claim 1 , wherein the control block is fitted onto the coupling housing. 
     
     
         5 . The coupling according to  claim 1 , wherein a control bar having a front seal is arranged in the coupling housing in a slidable manner and directed to the nipple. 
     
     
         6 . The coupling according to  claim 5 , wherein the control bar is surrounded by a compression spring. 
     
     
         7 . The coupling according to  claim 1 , wherein the coupling housing includes several, in particular six collets. 
     
     
         8 . The coupling according to  claim 7 , wherein the collets are surrounded by a lock sleeve, which supports one end of the hand lever. 
     
     
         9 . The coupling according to  claim 1 , wherein a spreading lever is hinged at the hand lever close to its pivot axis and connected to the coupling housing with the other end. 
     
     
         10 . The coupling according to  claim 1 , wherein the control block includes an operation knob, which is forced by the hand lever in connecting position. 
     
     
         11 . The coupling according to  claim 1 , wherein the control bar is forced by a bellow, preferably metal bellow, which is connected to a control line.