Abstract: The present disclosure provides a two-dimensional motor piston pump, including a two-dimensional motor and a two-dimensional piston pump. The two-dimensional motor and the two-dimensional piston pump are nested with each other and arranged coaxially. The two-dimensional motor includes a stator and an outer rotor, and the outer rotor is coaxial with the stator and is sleeved outside the stator. The two-dimensional piston pump includes: a flow distribution mechanism including a flow distribution rotor and a pump body, a piston mechanism including a left cam and a right cam; a roller assembly including a roller and a roller shaft, and a pump housing, a left end cover, and a right end cover.

Abstract: A first fracturing pump is selectively engaged or disengaged a from an electric prime mover based on operation of a first lever by a user. The first lever, the electric prime mover, and the first fracturing pump are mounted on a mobile transport. A second fracturing pump is selectively engaged or disengaged a from the electric prime mover based on operation of a second lever by the user. The second lever is also mounted on the mobile transport. The electric prime mover is operable to drive one of the first and second fracturing pumps that is engaged with the electric prime mover while not driving the other of the first and second fracturing pumps that is disengaged from the electric prime mover by operation of a corresponding one of the first and second levers.

Abstract: A diaphragm pump assembly can include a pump drive chamber, a first pump diaphragm chamber, and a second pump diaphragm chamber. The assembly can include a pump motor configured to rotate a motor shaft extending into the pump drive chamber. The assembly can include a cam connected to the motor shaft and configured to rotate in response to rotation of the motor shaft. The assembly can include a drive yoke having a yoke frame and a yoke pocket having a first wall and a second wall parallel and opposite the first wall. First and second pistons can connect to the drive yoke and to first and second diaphragms, respectively. The diameter of the cam can be less than and within 5% the width of yoke pocket and the yoke can be configured to move the pistons along a straight line.

Abstract: Systems and methods of controlling the performance of client nodes served by an electric power utility are provided. In one exemplary embodiment, a method performed by a first network node that is operable to control via a client node an electric motor configured to operate a pump jack comprises sending, to the client node, an indication to change an amount of electric power consumed by the motor to operate the pump jack based on at least one of a value of a first parameter associated with operation of the motor and a value of a second parameter associated with operation of the pump jack so as to reduce an average amount of electric power consumed during a certain time period by the motor in operating the pump jack.

Abstract: A reciprocating compressor includes a piston slidably mounted within a compression chamber and defining a suction port. A valve selectively permits a flow of gas through the suction port and includes a sealing portion positioned over the suction port, an attachment portion mechanically coupled to a compression face of the piston, a support portion that extends away from the attachment portion along the radial direction such that the attachment portion is positioned between the sealing portion and the support portion, wherein the support portion defines a flattened end opposite the sealing portion along the radial direction such that the valve has a non-circular shape, and a connecting portion that mechanically couples the support portion to the sealing portion and permits the sealing portion to move between an open position and a closed position.

Abstract: A flush-mounted fan system for an industrial ventilation system includes a fan device equipped with a blade group and an electric motor group. The electric motor group includes a drive shaft on which the blade group is mounted, an electric motor operatively connected to the drive shaft, and an electronic command device of the electric motor. The flush-mounted fan system also includes a flush-mounted frame housing the fan device including a flush-mounted box and a bracket group for supporting the fan device.

Abstract: The present invention relates to an impeller for an electric water pump capable of preventing a cavitation from occurring in the impeller according to the related art and improving a flow restriction in the impeller by changing an internal structure of the impeller in consideration of a flow of a coolant introduced into the impeller. The impeller for an electric water pump, includes: an inlet member formed in a pipe shape extending to allow a fluid to be introduced; an upper member connected to one end of the inlet member, extending to one side, and having an inner diameter increasing toward the one side; an extension member outwardly extending from one end of the upper member; and a lower impeller member coupled to an upper impeller member formed by the inlet member, the upper member, and the extension member to form a discharge space from which the fluid is discharged.

Abstract: The present invention discloses a continuous high-power turbine fracturing equipment, including a turbine engine, a reduction gearbox, a drive shaft and a plunger pump, the turbine engine is arranged in the same straight line with the reduction gearbox, the reduction gearbox is connected to the plunger pump through the drive shaft, the angle of the drive shaft is between 2° and 4°.

Abstract: A fan includes a fan frame and a driving device. The fan frame includes a base, a frame shell and static blades arranged on the periphery of the base. The driving device includes a stator structure and a rotor structure. The stator structure includes a stator magnetic pole group and a bushing. The rotor structure includes a bearing, a shaft, a rotor shell, a magnetic structure and blades. The shaft is connected with the rotor shell and disposed through the bearing. The stator magnetic pole group magnetically drives the magnetic structure to rotate the rotor shell. The blades are arranged on the periphery of the rotor shell. Two ends of the frame shell are configured with two turning portions, respectively. The two turning portions are disposed between parts of the frame shell with different curvatures.

Abstract: An anti-rotation device configured to prevent a plurality of blades of the industrial fan from rotating. The anti-rotation device includes a movable member and a non-movable member, wherein the movable member is slidable relative to the blades between two positions, an unlocked position that substantially permits the plurality of blades to rotate and a locked position that substantially prevents the plurality of blades from rotating. The movable member is movable in a direction substantially perpendicular to a direction of rotation of the blades. In one embodiment, the anti-rotation device includes a substantially L-shaped lever having a long side and a short side, a pulley operatively connected to the L-shaped lever at a point where the long side and the short side meet, and a substantially flat plate attached to one end of the short side of the L-shaped lever.

Abstract: A fan motor includes: a motor body; a rotary shaft assembly having a rotor and a bearing mounted on a rotary shaft; a stator that surrounds the rotor; an impeller connected to the rotary shaft; and a bracket including a bearing housing portion for receiving the bearing. The bearing housing portion defines a bearing heat dissipating flow path that allows air to be discharged to an outside of the bearing housing portion after passing between the outer surface of the bearing and the bearing housing portion. Air blown from the impeller can absorb heat of the bearing by contacting an outer surface of the bearing while passing through the bearing heat dissipating flow path.

Abstract: A drive system for a pump includes a housing, first and second fluid displacement members, and a reciprocating member configured to mechanically displace the first and second fluid displacement members through respective suction strokes. The housing and fluid displacement members define an internal pressure chamber configured to be filled with a working fluid having a charge pressure. The internal pressure chamber is configured such that the working fluid simultaneously exerts the charge pressure on the first and second fluid displacement members.

Abstract: A compressor includes a compression mechanism, a motor, a drive shaft, and a motor cooler. The compressor is configured to compress a working fluid. The motor dives the compression mechanism and is housed within a motor housing. The drive shaft is engaged with the motor and the compression mechanism and is configured to drive operation of the compression mechanism. The motor cooler is disposed adjacent the motor and is configured to pump a cooling working fluid around the motor. The motor cooler includes a pump that pumps the cooling working fluid into the motor housing based on a rotational speed of the drive shaft.

Abstract: Embodiments of systems and methods disclosed provide a hydraulic fracturing unit that includes a reciprocating plunger pump configured to pump a fracturing fluid and a powertrain configured to power the reciprocating plunger pump. The powertrain includes a prime mover and a drivetrain, the prime mover including a gas turbine engine. The hydraulic fracturing unit also includes auxiliary equipment configured to support operation of the hydraulic fracturing unit including the reciprocating plunger pump and the powertrain. A power system is configured to power the auxiliary equipment. The power system includes a power source and a power network. The power source is configured to generate power for the auxiliary equipment. The power network is coupled to the power source and the auxiliary equipment, and configured to deliver the power generated by the power source to the auxiliary equipment. Associated systems including a plurality of hydraulic fracturing units are also provided.

Abstract: A blower includes a housing including an inlet and an outlet, a bearing-housing structure provided to the housing and adapted to rotatably support a rotor, a motor provided to the bearing-housing structure and adapted to drive the rotor, and an impeller provided to the rotor. The bearing-housing structure includes a bearing shaft having a bearing surface that rotatably supports the rotor. The bearing shaft provides only a single bearing of the non-ball bearing type for the rotor.

Abstract: A motor-driven compressor includes a plurality of motor wires and an insulating terminal container. The motor wires include portions covered with an insulating tube and distal ends at which a connection terminal is provided. The terminal container includes a cluster block and a terminal holder. The cluster block accommodates the connection terminal and has an opening. The terminal holder holds the connection terminal and has a lid that closes the opening. The cluster block includes a base portion. The lid has a cutout that receives the tube. The lid is in contact with the base portion such that a part of a hole defined by the cutout is closed by the base portion.

Abstract: A high pressure pump comprising a fluid end mechanically coupled to a power end. The power end is modular and comprises a crankshaft section, a crosshead section, and a connector section coupled together by a first set of stay rods. The fluid end comprises a plurality of fluid end sections positioned in a side-by-side relationship. Each of the plurality of fluid end sections are attached to the power end using a plurality of second set of stay rods.

Abstract: A flushing pump including: a pump configured to draw fluid from a reservoir and expel the drawn fluid from a fluid outlet; a processor configured to control operation of the pump; and a remote controller connection port in electrical communication with the processor. The remote controller connection port including: an output system connection point; an input system connection point; a debugging connection point; and a ground connection point held at a reference voltage level. Wherein the processor is configured to output diagnostic information to the output system connection point in response to the debugging connection point receiving a signal at the reference voltage level.

Abstract: In order to provide a piston device that is of simple construction and provides optimised sealing, it is proposed that the piston device should include the following: a housing that includes a piston receptacle; a piston that is arranged to be linearly displaceable in the piston receptacle; a main gasket element that separates a first medium space from a second medium space, and a supplementary gasket element, different from the main gasket element, for sealing in a region between the piston and the piston receptacle.

Abstract: A rotary compressor includes a first cylinder, a first piston and a drive shaft. The drive shaft includes a first eccentric portion, a first shaft portion rotatably supported by a first bearing, and a first coupling portion coupling the first shaft portion with the first eccentric portion. The first piston is fitted to the first eccentric portion. The first shaft portion has a cylindrical shape coaxial with the rotational center axis. Re1?e1<R1. Re1 is a radius of the first eccentric portion. R1 is a radius of the first shaft portion. e1 is an eccentricity of the first eccentric portion. An outer surface of the first coupling portion does not extend radially out of an outer surface of the first eccentric portion. The first coupling portion includes a reinforcement portion with an outer surface positioned radially outside an outer surface of the first shaft portion.