Abstract:
A drive system for a fluid end of a reciprocating pump assembly including a drive member and a power end housing having a crankshaft rotatably disposed therein. The assembly includes a gearbox secured to the power end housing, the gearbox operatively connecting the drive member to the crankshaft for rotation thereof. The assembly further includes at least one arm member extending between the gearbox and the power end housing, the at least one arm member positioned to resist relative movement between the gearbox and the power end housing.
Abstract:
A drive system for a fluid end of a reciprocating pump assembly including a drive member and a power end housing having a crankshaft rotatably disposed therein. The assembly includes a gearbox secured to the power end housing, the gearbox operatively connecting the drive member to the crankshaft for rotation thereof. The assembly further includes at least one arm member extending between the gearbox and the power end housing, the at least one arm member positioned to resist relative movement between the gearbox and the power end housing.
Abstract:
A breast pump system comprising a solenoid valve is disclosed. The breast pump system further comprises a power source which is arranged to supply electrical power to the solenoid valve so as enable the solenoid valve to move between first and second positions. The breast pump system also comprises a controller configured to detect a change in inductance of the solenoid valve which is indicative of the solenoid valve moving from first to second position and a control action in which the vacuum pump is stopped.
Abstract:
A plate segment for a reciprocating pump power end frame assembly, the power end frame assembly having a pair of end plate segments and at least one middle plate segment disposed between the end plate segments. The plate segment consists of the middle plate segment or one of the pair of end plate segments and includes a plate having a front wall, a rear wall, a top wall, a bottom wall and a pair of sidewalls and at least one opening forming a bearing support surface, the opening extending through the plate. The plate segment further includes at least one extension extending from at least one of the sidewalls of the plate at a position to align with and contact a corresponding extension on an adjacently positioned plate.
Abstract:
A reciprocating compressor able to operate with two separate pressure suction lines is provided with a suction valve arrangement comprising: at least one vane-type automatic suction valve (3) and at least one vane-type semi-commanded suction valve (4), the latter being driven by a solenoid (5). The at least one semi-commanded suction valve (4) has a thickness greater that the thickness of the at least one automatic suction valve (3).
Abstract:
Kompressor, insbesondere Klimakompressor für Kraftfahrzeuge, mit einem hubvolumenverstellbarem Triebwerk, mit einer Triebraumzuströmeinrichtung, welche einen Widerstand, insbesondere ein Ventil (15) aufweist, welches Kältemittel aus einem Auslassdruckbereich in einen Triebraum einströmen lässt, und mit einer Triebraumabströmeinrichtung, welche einen Widerstand oder ein Ventil, insbesondere eine Drossel aufweist, welche Kältemittel aus dem Triebraum in den Ansaugdruckbereich abströmen lässt.
Abstract:
A plate segment for a reciprocating pump power end frame assembly, the power end frame assembly having a pair of end plate segments and at least one middle plate segment disposed between the end plate segments. The plate segment consists of the middle plate segment or one of the pair of end plate segments and includes a plate having a front wall, a rear wall, a top wall, a bottom wall and a pair of sidewalls and at least one opening forming a bearing support surface, the opening extending through the plate. The plate segment further includes at least one extension extending from at least one of the sidewalls of the plate at a position to align with and contact a corresponding extension on an adjacently positioned plate.
Abstract:
A skid for supporting a reciprocating pump assembly, the reciprocating pump assembly including a power end frame assembly having a pair of end plates and a plurality of middle plates disposed between the end plates. The end plates each have at least a pair of feet and the middle plates each having at least one foot. The skid includes a base and a plurality of pads extending from the base. At least a portion of the plurality of pads correspond to the end plate feet and at least another portion of the plurality of pads correspond to the at least one foot of each middle plate.
Abstract:
A power end frame assembly for a reciprocating pump that includes a first and second end plate segment each including annular bearing support surfaces configured to support a crankshaft bearing assembly. At least one middle plate segment is disposed between the first and second end plate segments and includes an annular bearing support surface configured to support a crankshaft bearing assembly. The annular bearing support surfaces of the first and second end plate segments and the at least one middle plate segment each have a diameter and are coaxially aligned. The diameter of at least one of the first and second end plate segments is different from the diameter of the at least one middle plate segment to facilitate insertion and removal of the crankshaft bearing assembly from the power end frame assembly.