Pump Turbine Installation

Abstract

The invention relates to a pump turbine system, comprising a turbine with a turbine impeller as well as a turbine spiral housing and a turbine suction pipe; a pump with a pump impeller as well as a pump spiral housing and a pump suction pipe; the two spiral housings are arranged to run in opposite directions; a shaft on which the turbine impeller and the pump impeller are non-rotatably arranged; an electrical machine that is in drive communication with the shaft or can be brought into such communication; the pressure lines of the two spiral housings open into a common pressure line; both suction pipes are each connected to suction lines, with both suction lines opening into a common suction line; with a separate shut-off element each being arranged in the suction lines.

1 . A pump turbine system, comprising
 a turbine ( 1 ) comprised of a turbine impeller ( 1 . 1 ), a turbine spiral housing ( 1 . 2 ) and a turbine suction pipe ( 1 . 5 );   a pump ( 2 ) comprised of a pump impeller ( 2 . 1 ) a pump spiral housing ( 2 . 2 ) and a pump suction pipe ( 2 . 5 );   two spiral housings ( 1 . 2 ,  2 . 2 ) arranged to run in opposite directions of each other and further comprised of pressure lines ( 1 , 3 ,  2 , 3 ), wherein said pressure lines ( 1 , 3 ,  2 , 3 ) open into a common pressure line ( 6 );   a shaft ( 3 ) on which the turbine impeller ( 1 . 1 ) and the pump impeller ( 2 . 1 ) are non-rotatably arranged;   an electrical machine ( 4 ) that is in drive communication with the shaft ( 3 ) or can be brought into such drive communication with the shaft ( 3 );   each of said turbine suction pipe ( 1 . 5 ) and said pump suction pipe ( 2 . 5 ) are connected to a pair of suction lines ( 1 . 4 ,  2 . 4 ), wherein both of said pair of suction lines ( 1 . 4 ,  2 . 4 ) open into a common suction line ( 8 );   a first shut-off element ( 1 . 6 ) being arranged in suction line ( 1 . 4 );   a second shut-off element ( 2 . 6 ) being arranged in the suction lines ( 2 . 4 );   the two spiral housings ( 1 . 2 ,  2 . 2 ) together delimiting an intermediate space ( 5 ) and being directly supported by means of a supporting element;   a common shut-off element ( 6 . 1 ) being arranged in the pressure line ( 6 );   a bearing ( 9 ) for supporting shaft ( 3 ) arranged in intermediate space ( 5 ); and   the common shut-off element ( 6 . 1 ) is embodied such that the two spiral housing ( 1 . 1 ,  2 , 2 ) can be always pressurized with the same pressure.   
     
     
         2 . (canceled) 
     
     
         3 . (canceled) 
     
     
         4 . (canceled) 
     
     
         5 . (canceled) 
     
     
         6 . (canceled) 
     
     
         7 . (canceled) 
     
     
         8 . (canceled) 
     
     
         9 . (canceled) 
     
     
         10 . The pump turbine system of  claim 1 , wherein said supporting element is a cylindrical supporting ring or a supporting cone. 
     
     
         11 . The pump turbine system of  claim 1 , wherein said bearing ( 9 ) is a guide bearing or a combined thrust/guide bearing. 
     
     
         12 . The pump turbine system of  claim 1 , wherein the electrical machine ( 4 ) is positioned inside intermediate space ( 5 ) between the two spiral housings ( 1 . 2 ,  2 . 2 ). 
     
     
         13 . The pump turbine system of  claim 1 , wherein the electrical machine ( 4 ) is positioned outside intermediate space ( 5 ) between the two spiral housings ( 1 . 2 ,  2 . 2 ). 
     
     
         14 . The pump turbine system of  claim 1 , wherein:
 the two spiral housings ( 1 . 2 ,  2 . 2 ) are arranged at a definited axial distance from each other;   the two spiral housings ( 1 . 2 ,  2 . 2 ) form a compact component unit; and   a first of the two spiral housings further comprises an outlet pipe that opens into an inlet pipe of a second of the two spiral housings.   
     
     
         15 . The pump turbine system of  claim 12 , wherein:
 the two spiral housings ( 1 . 2 ,  2 . 2 ) are arranged at a defined axial distance from each other;   the two spiral housings ( 1 . 2 ,  2 . 2 ) form a compact component unit; and   a first of the two spiral housings further comprises an outlet pipe that opens into an inlet pipe of a second of the two spiral housings.   
     
     
         16 . The pump turbine system of  claim 13 , wherein:
 the two spiral housings ( 1 . 2 ,  2 . 2 ) are arranged at a defined axial distance from each other;   the two spiral housings ( 1 . 2 ,  2 . 2 ) form a compact component unit; and   a first of the two spiral housings further comprises an outlet pipe that opens into an inlet pipe of a second of the two spiral housings.   
     
     
         17 . A component unit for the pump turbine system of  claim 1 , wherein said component unit comprises the two spiral housings ( 1 . 2 ,  2 . 2 ) and at least one of supporting elements ( 10 . 1 ,  10 . 2 ,  10 . 3 ).