초록 ▼

An apparatus for measuring the hydraulic axial thrust of a pump under operation conditions is disclosed. The axial thrust is determined by forcing the rotating impeller off of an associated thrust bearing by use of an elongate rod extending coaxially with the pump shaft. The elongate rod contacts an

An apparatus for measuring the hydraulic axial thrust of a pump under operation conditions is disclosed. The axial thrust is determined by forcing the rotating impeller off of an associated thrust bearing by use of an elongate rod extending coaxially with the pump shaft. The elongate rod contacts an impeller retainer bolt where a bearing is provided. Suitable measuring devices measure when the rod moves to force the impeller off of the associated thrust bearing and the axial force exerted on the rod at that time. The elongate rod is preferably provided in a housing with a heat dissipation mechanism whereby the hot fluid does not affect the measuring devices.

대표청구항 ▼

An apparatus for measuring hydraulic axial thrust of a pump which is pumping a pressurized hot fluid, which thrust is measured by causing axial displacement of a rotating impeller mounted on a rotating shaft, where the pump includes a suction port located adjacent the impeller and axially upstream f

An apparatus for measuring hydraulic axial thrust of a pump which is pumping a pressurized hot fluid, which thrust is measured by causing axial displacement of a rotating impeller mounted on a rotating shaft, where the pump includes a suction port located adjacent the impeller and axially upstream from a distal end of the rotating shaft, said apparatus comprising: an impeller retainer bolt attached on the distal end of the rotating shaft for rotation therewith, said bolt including a distal end adjacent the suction port, the retainer bolt being engagable to cause axial displacement of the impeller; an elongate rod which extends coaxially away from the rotating shaft, said rod including a distal end and a proximal end adjacent said distal end of said bolt; a fluid connector means for fluidly connecting the fluid to the suction port, said connector means including a housing surrounding said distal end of said rod and a mounting means for mounting said distal end of said rod for reciprocating axial movement in said housing; a force means extending through said housing which engages said distal end of said rod for forcing said rod coaxially and nonrotatably toward said bolt in order to cause axial displacement of the impeller; a bearing means provided between said distal end of said bolt and said proximal end of said rod for frictionlessly transmitting the axial force exerted on said nonrotating rod to said rotating bolt; and a measuring means for measuring the axial thrust force exerted by said force means on said rod in order to cause axial displacement of the impeller.