Abstract: An electric compressor includes a housing, refrigerant inlet port, a refrigerant outlet port, an inverter section, a motor section, a compression device and a front cover. The housing defines an intake volume and a discharge volume. The refrigerant inlet port is coupled to the housing and is configured to introduce the refrigerant to the intake volume. The compression device is a scroll-type compression device configured to compress the refrigerant. The refrigerant outlet port is coupled to the housing and is configured to allow compressed refrigerant to exit the scroll-type electric compressor from the discharge volume.

Abstract: A vacuum pump comprising a turbomolecular stage and a drag stage, the vacuum pump comprising a stator and a rotor. The rotor comprises a turbomolecular rotor and a drag rotor attached together. The turbomolecular rotor comprises a hub from which a plurality of blades extend, the hub comprising a mounting portion for mounting to a spindle of a motor and a hollow cylindrical portion, the hollow cylindrical portion extending from the mounting portion towards an outlet end of the turbomolecular stage. The drag rotor comprises a cylindrical skirt and an attachment part extending away from the cylindrical skirt, the attachment part extending within the hollow cylindrical portion of the hub of the turbomolecular rotor and being attached thereto at a point that is closer to the mounting portion than to the outlet end of the turbomolecular rotor.

Abstract: Fracturing equipment includes: a plunger pump, a main motor and a noise reduction device. The plunger pump is used for pressurizing liquid. The main motor is connected to the plunger pump by transmission for providing driving force to the plunger pump. The noise reduction device is constructed as a cabin structure and covers outside the main motor and isolates the main motor from the plunger pump. With the fracturing equipment according to the present disclosure, the fracturing equipment is driven by the main motor with relatively low noise during operation. The noise reduction device isolates the main motor from the outside, which can effectively reduce the noise intensity transmitted to the outside during operation, thereby achieve the effect of noise reduction. In addition, the plunger pump is isolated from the main motor by the noise reduction device, thus realizing isolation of high-pressure dangerous areas and ensuring safe operation.

Abstract: A fluid end comprising a plurality of fluid end sections positioned in a side-by-side relationship. Each fluid end section is releasably attached to a connect plate. Each connect plate is attached to a power source using a plurality of stay rods. Each fluid end section comprises a housing in fluid communication with a pair of intake manifolds and a discharge conduit. A fluid routing plug is installed within each housing and is configured to route fluid throughout the housing. A plunger is installed within stuffing box attached to each housing. A number of features, including the location of seals within bore walls and carbide inserts within valve guides, aid in reducing or transferring wear.

Abstract: An encapsulated apparatus includes an external housing and an internal housing. The external housing includes a plurality of components including a motor head, a motor, and a pump intake. The motor head has a fluid outlet configured to direct reservoir fluid out of the motor head. The motor head includes a power inlet configured to connect a power cable to an electric transmission system. The motor is connected to the motor head in contact with the reservoir fluid. The motor is powered by the electric transmission system. The pump intake is connected to the motor having a fluid inlet configured to direct the reservoir fluid from the fluid outlet into the fluid inlet. The internal housing is disposed in the external housing configured to be fluidly isolated from the reservoir fluid. The internal housing includes the electric transmission system.

Abstract: A submersible fuel oil apparatus includes a base; at least one platform supported above the base and having a top surface, an underside surface and an aperture therethrough; a submersible motor mounted on the top surface of the platform and having a motor shaft extending vertically downward through the aperture in the platform; a fuel oil pump supported underneath the platform and having a pump shaft extending vertically upward, a pump inlet into which fuel oil is adapted to be delivered, and a pump outlet from which fuel oil is adapted to be pumped, the pump positioned such that the motor shaft and the pump shaft are aligned; a coupler connecting the motor shaft and pump shaft to each other; inlet piping connected to the pump inlet; and outlet piping connected to the pump outlet.

Abstract: A compressor system including a compressor, a cooling device and a control apparatus, wherein the control apparatus is configured to control the cooling device independently of the operation of the compressor and to be capable of dynamically modifying a control parameter (Tair, Toil) of an actuator and/or the actuator for the actuation of the cooling device.

Abstract: A fluid end made of a plurality of fluid end sections positioned in a side-by-side relationship. Each fluid end section is made of a housing having a discharge bore and an intake bore formed therein. A fluid routing plug is installed within each housing and is configured to route fluid throughout the housing and between the discharge and intake bores. The fluid routing plug carries seals that engage sealing surfaces formed within the housing. A number of features, including the location of seals within bore walls and carbide inserts within valve guides, aid in reducing or transferring wear within each housing.

Abstract: An gas-driven generator system for generating electric power from movement of a working liquid. The system includes a gas-driven generator that includes a liquid turbine system fluidically interposed between the lower end of an elongated gravitational distribution conduit and the lower ends of plural elongated buoyancy conduits. A heavy working liquid flows from the upper ends of the buoyancy conduits and is fed into the upper end of the elongated gravitational distribution conduit. Working liquid flows down the elongated gravitational distribution conduit to actuate the liquid turbine system. An injection of refrigerant gas into the working liquid in the plural elongated buoyancy conduits induces upward flow of the working liquid. The system includes a solar thermal heating system fluidically coupled to heat exchangers that transfer heat collected by the solar thermal heating system to the working liquid through a thermal transfer fluid circuit.

Abstract: An apparatus is disclosed. The apparatus has a first housing having a first cavity, a second housing disposed in the first housing and including a second cavity and at least one aperture, a first fan assembly configured to generate a first airflow through the first housing, and a second fan assembly configured to generate a second airflow from the second cavity to the first cavity via the at least one aperture.

Abstract: Disclosed in the present invention is an electromagnetic pump, including: a pump body; an inner iron core, including a central cylinder, an axis of the central cylinder basically coinciding with an axis of the electromagnetic pump; a plurality of outer iron cores, disposed at least partially surrounding the inner iron core; a winding, at least partially disposed on the outer iron cores; and a pump channel mechanism, at least partially disposed between the outer iron cores and the inner iron core, where the pump channel mechanism includes: a first pump channel wall, a second pump channel wall, a circulation channel, and a cavity dividing structure, and being used for supporting the first pump channel wall and the second pump channel wall, the cavity dividing structure being further used for dividing the circulation channel, to divide the circulation channel into a plurality of channels.

Abstract: Water pumps for an urban water landscape, including a water pump main body, a water pump base, a grille net cover, and a filter component. The water pump main body may include a water pump shell. A water outlet interface may be disposed on a top of the water pump shell. The grille net cover may be located on a front side of the water pump shell. The grille net cover may be fixedly connected to the water pump shell through a filter component pallet on a bottom of the grille net cover and filter component cross bars on two sides of the grille net cover. Two filter assemblies may be inserted in series in the filter component slot. The water pump main body may be detachably disposed on the water pump base.

Abstract: A system can include one or more processors; memory; a data interface that receives data; a control interface that transmits control signals for control of pumps of a hydraulic fracturing operation; and one or more components that can include one or more of a modeling component that predicts pressure in a well fluidly coupled to at least one of the pumps, a pumping rate adjustment component that generates a pumping rate control signal for transmission via the control interface, a capacity component that estimates a real-time pumping capacity for each individual pump, and a control component that, for a target pumping rate for the pumps during the hydraulic fracturing operation, generates at least one of engine throttle and transmission gear settings for each of the individual pumps using an estimated real-time pumping capacity for each individual pump where the settings are transmissible via the control interface.

Abstract: A drive system for a pump includes a housing and a fluid displacer and a reciprocator configured to mechanically displace the fluid displacer through respective suction strokes. The housing and fluid displacer 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 exerts the charge pressure on the fluid displacer during both the suction stroke and a pressure stroke of the fluid displacer.

Abstract: An electric submersible pump (ESP) including: a switched reluctance motor (SRM) including stator coils. The number of the stator coils is a multiple of three, surface electronics that drive the SRM, a cable that connects the SRM to the surface electronics. The cable includes conductors in a number equal to the number of the stator coils, each cable includes a push-pull driver that connects the cable to a ground, a DC voltage different from the ground, or disconnects the cable.

Abstract: A conveyor device for at least conveying a fluid with at least one conveyor chamber is provided. The conveyor device includes at least one dimensionally stable conveyor chamber element that at least partially delimits the conveyor chamber and with at least one elastically deformable and, in particular, annular conveyor element, particularly a conveyor membrane, that delimits the conveyor chamber together with the conveyor chamber element and is arranged on the conveyor chamber element, wherein the conveyor element has at least one sealing extension that is designed integrally with a base body of the conveyor element and at least partially arranged in a sealing groove of the conveyor chamber element when the conveyor element is arranged on the conveyor chamber element.

Abstract: A compressor includes a casing that stores a lubrication oil in a bottom portion, a compression mechanism disposed in the casing, an electric motor disposed above the compression mechanism, a discharge pipe opening in a space in the casing on an upper side of the motor, and an oil drainage mechanism that guides a lubrication oil adhering to an inner wall of the casing to the discharge pipe using a swirling flow generated by rotation of the motor. The oil drainage mechanism includes an oil drain pipe having one end opening in the inner wall of the casing and another end connected to the discharge pipe, and a flow-rate regulating valve disposed at the oil drain pipe. The flow-rate regulating valve has a changeable opening degree. The opening degree of the flow-rate regulating valve is configured to be regulated in accordance with a rotational speed of the motor.

Abstract: A motor-driven compressor includes an inverter that includes a circuit board and an electrical component, and an inverter cover that defines an inverter accommodating chamber together with an end wall of a motor housing member. The inverter accommodating chamber accommodates a first conductive member and a second conductive member. A first end of the first conductive member and a lead of the electrical component extend through the circuit board from a first surface, which faces the end wall, and are soldered to the circuit board on a second surface on a side opposite to the first surface. A first end of the second conductive member is electrically connected to a power supply connector. Second ends of the first conductive member and the second conductive member are mated to each other so as to be electrically connected to each other when the inverter cover is joined to the motor housing member.

Abstract: A pump device having a pump piston (12) longitudinally movable in a pump housing (10), which pump piston is actuated by an actuating solenoid (14) to open an outlet valve (16) for discharging a fluid during a delivery stroke. In a pump space (18) of the pump housing (10), during a suction stroke, the pump piston (12) generates a negative pressure and, upon passing over a control edge (20) delimiting the pump space (18), the piston establishes a fluid connection between a fluid inlet (22) in the pump housing (10) and the pump space (18). The pump space (18), under the negative pressure in the pump space (18), is filled resulting from a fluid flow along the outer circumference (24) of parts of the pump piston (12) toward the outlet valve (16). During the delivery stroke, this filling volume is discharged from the pump space (18) via the outlet valve (16).

Abstract: An electric compressor including a rotary shaft, a compression part, an electric motor, an inverter circuit, a filter element disposed on an input side of the inverter circuit, the filter element including a capacitor connected in parallel to a direct current power source, a holder holding the filter element, a resistor having a lead portion electrically connected to the capacitor, and a housing having an inverter accommodation chamber in which the inverter circuit, the holder, and the capacitor are accommodated. The holder includes a metal plate having an internally threaded screw hole. The resistor is held by the holder with the metal plate interposed therebetween with a bolt screwed into the internal threaded screw hole. The holder is fixed to the housing. The holder is interposed between the lead portion and the housing. An insulating heat transfer member is interposed between the metal plate and the housing.